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Fluoxetine
Overview
Active ingredients
Source: NDC DirectoryForms, strengths and routes
Source: NDC DirectoryPharmacologic classes are listed in the class section below.
Pharmacologic class
Source: NDC Directory| Class | Type | Browse |
|---|---|---|
| Serotonin Reuptake Inhibitor [EPC] | EPC | All 51 members |
| Serotonin Uptake Inhibitors [MoA] | MoA | All 73 members |
Regulatory status
Source: Drugs@FDANDC Directory| Product | Trade name | Form | Strength | Ingredient | Status | TE | Flags |
|---|---|---|---|---|---|---|---|
| 213286-001 | FLUOXETINE HYDROCHLORIDE | TABLET | FLUOXETINE HYDROCHLORIDE | Prescription | AB | ||
| 213286-002 | FLUOXETINE HYDROCHLORIDE | TABLET | FLUOXETINE HYDROCHLORIDE | Prescription | AB | RS |
Therapeutic equivalence
Source: Orange BookWhat this rating means: Therapeutically equivalent — bioequivalence demonstrated by in vivo or in vitro testing
Codes beginning with “A” indicate products the FDA considers therapeutically equivalent. Codes beginning with “B” indicate bioequivalence has not been established. See methodology.
Approval history
Source: Drugs@FDA| Type | No. | Action | Status | Date | Review |
|---|---|---|---|---|---|
| Supplement | 6 | Manufacturing (CMC) | Approved | January 15, 2026 | Unknown |
| Supplement | 5 | Labeling | Approved | August 18, 2023 | Standard |
| Supplement | 2 | Labeling | Approved | September 20, 2021 | Standard |
| Original application | 1 | Approved | April 8, 2020 | Standard |
Prescribing information
Source: openFDA Drug LabelingReproduced verbatim from the Structured Product Labeling submitted to the FDA (effective 20260715). This is the manufacturer's labelling text, not a summary and not advice.
Boxed Warning
openFDA Drug LabelingWARNING: SUICIDAL THOUGHTS AND BEHAVIORS Antidepressants increased the risk of suicidal thoughts and behavior in children, adolescents, and young adults in short-term studies. These studies did not show an increase in the risk of suicidal thoughts and behavior with antidepressant use in patients over age 24; there was a reduction in risk with antidepressant use in patients aged 65 and older [see Warnings and Precautions (5.1) ]. In patients of all ages who are started on antidepressant therapy, monitor closely for worsening and for emergence of suicidal thoughts and behaviors. Advise families and caregivers of the need for close observation and communication with the prescriber [see Warnings and Precautions (5.1) ]. Fluoxetine is not approved for use in children less than 7 years of age [see Warnings and Precautions (5.1) and Use in Specific Populations (8.4) ]. When using fluoxetine and olanzapine in combination, also refer to Boxed Warning section of the package insert for Symbyax ® . WARNING: SUICIDAL THOUGHTS AND BEHAVIORS See full prescribing information for complete boxed warning. Increased risk of suicidal thinking and behavior in children, adolescents, and young adults taking antidepressants ( 5.1) . Monitor for worsening and emergence of suicidal thoughts and behaviors ( 5.1 ). When using fluoxetine and olanzapine in combination, also refer to Boxed Warning section of the package insert for Symbyax ®
If you take fluoxetine tablets, you should not take any other medicines that contain fluoxetine hydrochloride including: Symbyax ® Sarafem ® Prozac Weekly ®
Recent Major Changes
openFDA Drug LabelingRECENT MAJOR CHANGES SECTION Warnings and Precautions, Serotonin Syndrome (5.2) 06/2023 Warnings and Precautions (5.7) 06/2023
Indications and Usage
openFDA Drug Labeling1 INDICATIONS AND USAGE Fluoxetine is a selective serotonin reuptake inhibitor indicated for: Acute and maintenance treatment of Major Depressive Disorder (MDD) in adult and pediatric patients aged 8 to 18 years. ( 1.1 ) Acute and maintenance treatment of Obsessive Compulsive Disorder (OCD) in adults and pediatric patients aged 7 to 17 years. ( 1.2 ) Acute and maintenance treatment of Bulimia Nervosa in adult patients. ( 1.3 ) Acute treatment of Panic Disorder, with or without agoraphobia, in adult patients. ( 1.4 ) 1.1 Major Depressive Disorder Fluoxetine tablets are indicated for the acute and maintenance treatment of Major Depressive Disorder in adult patients and in pediatric patients aged 8 to 18 years [see Clinical Studies (14.1) ] . The usefulness of the drug in adult and pediatric patients receiving fluoxetine tablets for extended periods should periodically be re-evaluated [see Dosage and Administration (2.1) ] . 1.2 Obsessive Compulsive Disorder Fluoxetine tablets are indicated for the acute and maintenance treatment of obsessions and compulsions in adult patients and in pediatric patients aged 7 to 17 years with Obsessive Compulsive Disorder (OCD) [see Clinical Studies (14.2) ] . The effectiveness of fluoxetine tablets in long-term use, i.e., for more than 13 weeks, has not been systematically evaluated in placebo-controlled trials. Therefore, the physician who elects to use fluoxetine tablets for extended periods should periodically re-evaluate the long-term usefulness of the drug for the individual patient [see Dosage and Administration (2.2) ] . 1.3 Bulimia Nervosa Fluoxetine tablets are indicated for the acute and maintenance treatment of binge-eating and vomiting behaviors in adult patients with moderate to severe Bulimia Nervosa [see Clinical Studies (14.3) ] . The physician who elects to use fluoxetine tablets for extended periods should periodically re-evaluate the long-term usefulness of the drug for the individual patient [see Dosage and Administration (2.3) ] . 1.4 Panic Disorder Fluoxetine tablets are indicated for the acute treatment of Panic Disorder, with or without agoraphobia, in adult patients [see Clinical Studies (14.4) ] . The effectiveness of fluoxetine tablets in long-term use, i.e., for more than 12 weeks, has not been established in placebo-controlled trials. Therefore, the physician who elects to use fluoxetine tablets for extended periods should periodically re-evaluate the long-term usefulness of the drug for the individual patient [see Dosage and Administration (2.4) ] .
Dosage and Administration
openFDA Drug Labeling2 DOSAGE AND ADMINISTRATION Indication Adult Pediatric MDD ( 2.1 ) 20 mg/day in am (initial dose) 10 to 20 mg/day (initial dose) OCD ( 2.2 ) 20 mg/day in am (initial dose) 10 mg/day (initial dose) Bulimia Nervosa ( 2.3 ) 60 mg/day in am - Panic Disorder ( 2.4 ) 10 mg/day (initial dose) - A lower or less frequent dosage should be used in patients with hepatic impairment, the elderly, and for patients with concurrent disease or on multiple concomitant medications. ( 2.7 ) 2.1 Major Depressive Disorder Initial Treatment: Adult: In controlled trials used to support the efficacy of fluoxetine tablets, patients were administered morning doses ranging from 20 to 80 mg/day. Studies comparing fluoxetine tablets 20, 40, and 60 mg/day to placebo indicate that 20 mg/day is sufficient to obtain a satisfactory response in Major Depressive Disorder in most cases. Consequently, a dose of 20 mg/day, administered in the morning, is recommended as the initial dose. A dose increase may be considered after several weeks if insufficient clinical improvement is observed. Doses above 20 mg/day may be administered on a once-a-day (morning) or BID schedule (i.e., morning and noon) and should not exceed a maximum dose of 80 mg/day. Pediatric (Children and Adolescents): In the short-term (8 to 9 week) controlled clinical trials of fluoxetine tablets supporting its effectiveness in the treatment of Major Depressive Disorder, patients were administered fluoxetine tablets doses of 10 to 20 mg/day [see Clinical Studies (14.1) ] . Treatment should be initiated with a dose of 10 or 20 mg/day. After one week at 10 mg/day, the dose should be increased to 20 mg/day. However, due to higher plasma levels in lower weight children, the starting and target dose in this group may be 10 mg/day. A dose increase to 20 mg/day may be considered after several weeks if insufficient clinical improvement is observed. All Patients: As with other drugs effective in the treatment of Major Depressive Disorder, the full effect may be delayed until 4 weeks of treatment or longer. Maintenance/Continuation/Extended Treatment: It is generally agreed that acute episodes of Major Depressive Disorder require several months or longer of sustained pharmacologic therapy. Whether the dose needed to induce remission is identical to the dose needed to maintain and/or sustain euthymia is unknown. Daily Dosing: Systematic evaluation of fluoxetine tablets in adult patients has shown that its efficacy in Major Depressive Disorder is maintained for periods of up to 38 weeks following 12 weeks of open-label acute treatment (50 weeks total) at a dose of 20 mg/day [see Clinical Studies (14.1) ] . Switching Patients to a Tricyclic Antidepressant (TCA): Dosage of a TCA may need to be reduced and plasma TCA concentrations may need to be monitored temporarily when fluoxetine tablets is coadministered or has been recently discontinued [see Warnings and Precautions (5.2) and Drug Interactions (7.7) ] . 2.2 Obsessive Compulsive Disorder Initial Treatment: Adult: In the controlled clinical trials of fluoxetine tablets supporting its effectiveness in the treatment of OCD, patients were administered fixed daily doses of 20 mg, 40 mg, or 60 mg of fluoxetine tablets or placebo [see Clinical Studies (14.2) ] . In one of these studies, no dose-response relationship for effectiveness was demonstrated. Consequently, a dose of 20 mg/day, administered in the morning, is recommended as the initial dose. Since there was a suggestion of a possible dose-response relationship for effectiveness in the second study, a dose increase may be considered after several weeks if insufficient clinical improvement is observed. The full therapeutic effect may be delayed until 5 weeks of treatment or longer. Doses above 20 mg/day may be administered on a once daily (i.e., morning) or BID schedule (i.e., morning and noon). A dose range of 20 to 60 mg/day is recommended; however, doses of up to 80 mg/day have been well tolerated in open stu …
Dosage Forms and Strengths
openFDA Drug Labeling3 DOSAGE FORMS AND STRENGTHS Fluoxetine Tablets, USP are available containing fluoxetine hydrochloride, USP equivalent to 10 mg or 20 mg of fluoxetine. Fluoxetine Tablets, USP 10 mg* are white to off white, oval shape film coated, functional-scored tablets debossed with "SG' on scored side and "420" on other side. Fluoxetine Tablets USP, 20 mg* are white to off white, oval shape film coated, functional-scored tablets debossed with "SG' on scored side and "421" on other side. * Fluoxetine base equivalent Tablets (functional-scored): 10 mg, 20 mg (3)
Contraindications
openFDA Drug Labeling4 CONTRAINDICATIONS When using fluoxetine and olanzapine in combination, also refer to the Contraindications section of the package insert for Symbyax ® . Serotonin Syndrome and MAOIs: Do not use MAOIs intended to treat psychiatric disorders with fluoxetine or within 5 weeks of stopping treatment with fluoxetine. Do not use fluoxetine within 14 days of stopping an MAOI intended to treat psychiatric disorders. In addition, do not start fluoxetine in a patient who is being treated with linezolid or intravenous methylene blue. ( 4.1 ) Pimozide: Do not use. Risk of QT prolongation and drug interaction. ( 4.2 , 5.11 , 7.7 , 7.8 ) Thioridazine: Do not use. Risk of QT interval prolongation and elevated thioridazine plasma levels. Do not use thioridazine within 5 weeks of discontinuing fluoxetine. ( 4.2 , 5.11 , 7.7 , 7.8 ) When using fluoxetine and olanzapine in combination, also refer to the Contraindications section of the package insert for Symbyax ® . ( 4 ) 4.1 Monoamine Oxidase Inhibitors (MAOIs) The use of MAOIs intended to treat psychiatric disorders with fluoxetine tablets or within 5 weeks of stopping treatment with fluoxetine tablets are contraindicated because of an increased risk of serotonin syndrome. The use of fluoxetine tablets within 14 days of stopping an MAOI intended to treat psychiatric disorders is also contraindicated [see Dosage and Administration (2.9) and Warnings and Precautions (5.2) ] . Starting fluoxetine tablets in a patient who is being treated with MAOIs such as linezolid or intravenous methylene blue is also contraindicated because of an increased risk of serotonin syndrome [see Dosage and Administration (2.10) and Warnings and Precautions (5.2) ] . 4.2 Other Contraindications The use of fluoxetine tablets are contraindicated with the following: Pimozide [see Warnings and Precautions (5.11) and Drug Interactions (7.7, 7.8) ] Thioridazine [see Warnings and Precautions (5.11) and Drug Interactions (7.7, 7.8) ] Pimozide and thioridazine prolong the QT interval. Fluoxetine tablets can increase the levels of pimozide and thioridazine through inhibition of CYP2D6. Fluoxetine tablets can also prolong the QT interval.
Warnings and Cautions
openFDA Drug Labeling5 WARNINGS AND PRECAUTIONS When using fluoxetine and olanzapine in combination, also refer to the Warnings and Precautions section of the package insert for Symbyax Clinical Worsening and Suicide Risk: Monitor for clinical worsening and suicidal thinking and behavior (5.1) Serotonin Syndrome: Serotonin syndrome has been reported with SSRIs and SNRIs, including fluoxetine, both when taken alone, but especially when co-administered with other serotonergic agents. If such symptoms occur, discontinue fluoxetine and serotonergic agents and initiate supportive treatment. If concomitant use of fluoxetine with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (5.2) Allergic Reactions and Rash: Discontinue upon appearance of rash or allergic phenomena (5.3) Activation of Mania/Hypomania: Screen for Bipolar Disorder and monitor for mania/hypomania (5.4) Seizures: Use cautiously in patients with a history of seizures or with conditions that potentially lower the seizure threshold (5.5) Altered Appetite and Weight: Significant weight loss has occurred (5.6) Abnormal Bleeding: May increase the risk of bleeding. Use with NSAIDs, aspirin, warfarin, or other drugs that affect coagulation may potentiate the risk of gastrointestinal or other bleeding (5.7) Angle- Closure Glaucoma: Angle-closure glaucoma has occurred in patients with untreated anatomically narrow angles treated with antidepressants (5.8) Hyponatremia: Has been reported with fluoxetine in association with syndrome of inappropriate antidiuretic hormone (SIADH). Consider discontinuing if symptomatic hyponatremia occurs (5.9) Anxiety and Insomnia: May occur (5.10) QT Prolongation: QT prolongation and ventricular arrhythmia including Torsades de Pointes have been reported with fluoxetine use. Use with caution in conditions that predispose to arrhythmias or increased fluoxetine exposure. Use cautiously in patients with risk factors for QT prolongation ( 4.2 , 5.11 , 7.7 , 7.8 , 10.1 ). Potential for Cognitive and Motor Impairment: Has potential to impair judgment, thinking, and motor skills. Use caution when operating machinery (5.13) Long Half-Life: Changes in dose will not be fully reflected in plasma for several weeks (5.14) Fluoxetine and Olanzapine in Combination: When using fluoxetine and olanzapine in combination, also refer to the Warnings and Precautions section of the package insert for Symbyax ( 5.16) Sexual Dysfunction: Fluoxetine may cause symptoms of sexual dysfunction.( 5.17 ) 5.1 Clinical Worsening and Suicide Risk Patients with Major Depressive Disorder (MDD), both adult and pediatric, may experience worsening of their depression and/or the emergence of suicidal ideation and behavior (suicidality) or unusual changes in behavior, whether or not they are taking antidepressant medications, and this risk may persist until significant remission occurs. Suicide is a known risk of depression and certain other psychiatric disorders, and these disorders themselves are the strongest predictors of suicide. There has been a long-standing concern, however, that antidepressants may have a role in inducing worsening of depression and the emergence of suicidality in certain patients during the early phases of treatment. Pooled analyses of short-term placebo-controlled trials of antidepressant drugs (SSRIs and others) showed that these drugs increase the risk of suicidal thinking and behavior (suicidality) in children, adolescents, and young adults (ages 18 to 24) with Major Depressive Disorder (MDD) and other psychiatric disorders. Short-term studies did not show an increase in the risk of suicidality with antidepressants compared to placebo in adults beyond age 24; there was a reduction with antidepressants compared to placebo in adults aged 65 and older. The pooled analyses of placebo-controlled trials in children and adolescents with MDD, …
Adverse Reactions
openFDA Drug Labeling6 ADVERSE REACTIONS When using fluoxetine and olanzapine in combination, also refer to the Adverse Reactions section of the package insert for Symbyax. Most common adverse reactions (≥ 5% and at least twice that for placebo) associated with: Major Depressive Disorder, Obsessive Compulsive Disorder, Bulimia and Panic Disorder: abnormal dreams, abnormal ejaculation, anorexia, anxiety, asthenia, diarrhea, dry mouth, dyspepsia, flu syndrome, impotence, insomnia, libido decreased, nausea, nervousness, pharyngitis, rash, sinusitis, somnolence, sweating, tremor, vasodilatation, and yawn (6.1) Fluoxetine and olanzapine in combination – Also refer to the Adverse Reactions section of the package insert for Symbyax (6) To report SUSPECTED ADVERSE REACTIONS, contact Alembic Pharmaceuticals Limited at 1-866-210-9797 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect or predict the rates observed in practice. Multiple doses of fluoxetine have been administered to 10,782 patients with various diagnoses in US clinical trials. In addition, there have been 425 patients administered fluoxetine in panic clinical trials. Adverse reactions were recorded by clinical investigators using descriptive terminology of their own choosing. Consequently, it is not possible to provide a meaningful estimate of the proportion of individuals experiencing adverse reactions without first grouping similar types of reactions into a limited (i.e., reduced) number of standardized reaction categories. In the tables and tabulations that follow, COSTART Dictionary terminology has been used to classify reported adverse reactions. The stated frequencies represent the proportion of individuals who experienced, at least once, a treatment‐emergent adverse reaction of the type listed. A reaction was considered treatment‐emergent if it occurred for the first time or worsened while receiving therapy following baseline evaluation. It is important to emphasize that reactions reported during therapy were not necessarily caused by it. The prescriber should be aware that the figures in the tables and tabulations cannot be used to predict the incidence of side effects in the course of usual medical practice where patient characteristics and other factors differ from those that prevailed in the clinical trials. Similarly, the cited frequencies cannot be compared with figures obtained from other clinical investigations involving different treatments, uses, and investigators. The cited figures, however, do provide the prescribing physician with some basis for estimating the relative contribution of drug and nondrug factors to the side effect incidence rate in the population studied. Incidence in Major Depressive Disorder, OCD, bulimia, and Panic Disorder placebo‐controlled clinical trials (excluding data from extensions of trials) — Table 3 enumerates the most common treatment‐emergent adverse reactions associated with the use of fluoxetine (incidence of at least 5% for fluoxetine and at least twice that for placebo within at least 1 of the indications) for the treatment of Major Depressive Disorder, OCD, and bulimia in U.S. controlled clinical trials and Panic Disorder in U.S. plus non‐U.S. controlled trials. Table 5 enumerates treatment‐emergent adverse reactions that occurred in 2% or more patients treated with fluoxetine and with incidence greater than placebo who participated in U.S. Major Depressive Disorder, OCD, and bulimia controlled clinical trials and U.S. plus non‐U.S. Panic Disorder controlled clinical trials. Table 4 provides combined data for the pool of studies that are provided separately by indication in Table 3. Table 3: Most Common Treatment-Emergent Adverse Reactions : Incidence in Major Depressive Disorder, …
Drug Interactions
openFDA Drug Labeling7 DRUG INTERACTIONS As with all drugs, the potential for interaction by a variety of mechanisms (e.g., pharmacodynamic, pharmacokinetic drug inhibition or enhancement, etc.) is a possibility. Drugs Metabolized by CYP2D6: Fluoxetine is a potent inhibitor of CYP2D6 enzyme pathway (7.6) Tricyclic Antidepressants (TCAs): Monitor TCA levels during co-administration with fluoxetine or when fluoxetine has been recently discontinued (5.2, 7.6) Benzodiazepines: Diazepam—increased t1⁄2, alprazolam—further psychomotor performance decrement due to increased levels (7.6) Antipsychotics: Potential for elevation of haloperidol and clozapine levels (7.6) Anticonvulsants: Potential for elevated phenytoin and carbamazepine levels and clinical anticonvulsant toxicity (7.6) Serotonergic Drugs: (2.6, 2.7, 4.1, 5.2) Drugs that Prolong the QT Interval: Do not use fluoxetine with thioridazine or pimozide. Use with caution in combination with other drugs that prolong the QT interval (4.2, 5.11, 7.6, 7.7) 7.1 Monoamine Oxidase Inhibitors (MAOIs) [See Dosage and Administration (2.6, 2.7), Contraindications (4.1), and Warnings and Precautions (5.2)]. 7.2 CNS Acting Drugs Caution is advised if the concomitant administration of fluoxetine and such drugs is required. In evaluating individual cases, consideration should be given to using lower initial doses of the concomitantly administered drugs, using conservative titration schedules, and monitoring of clinical status [see Clinical Pharmacology (12.3)]. 7.3 Other Serotonergic Drugs The concomitant use of serotonergic drugs (including other SSRIs, SNRIs, triptans, tricyclic antidepressants, opioids, lithium, buspirone, amphetamines, tryptophan, and St. John's Wort) with fluoxetine increases the risk of serotonin syndrome. Monitor patients for signs and symptoms of serotonin syndrome, particularly during treatment initiation and dosage increases. If serotonin syndrome occurs, consider discontinuation of fluoxetine and/or concomitant serotonergic drugs [see Warnings and Precautions (5.2)]. 7.4 Drugs that Interfere with Hemostasis (e.g., NSAIDS, Aspirin, Warfarin) Serotonin release by platelets plays an important role in hemostasis. Epidemiological studies of the case-control and cohort design that have demonstrated an association between use of psychotropic drugs that interfere with serotonin reuptake and the occurrence of upper gastrointestinal bleeding have also shown that concurrent use of an NSAID or aspirin may potentiate this risk of bleeding. Altered anticoagulant effects, including increased bleeding, have been reported when SNRIs or SSRIs are co-administered with warfarin. Patients receiving warfarin therapy should be carefully monitored when fluoxetine is initiated or discontinued [see Warnings and Precautions (5.7)]. 7.5 Potential for Other Drugs to Affect Fluoxetine Drugs tightly bound to plasma proteins —Because fluoxetine is tightly bound to plasma proteins, adverse effects may result from displacement of protein-bound fluoxetine by other tightly bound drugs [see Clinical Pharmacology (12.3)]. 7.6 Potential for Fluoxetine to Affect Other Drugs Pimozide —Concomitant use in patients taking pimozide is contraindicated. Pimozide can prolong the QT interval. Fluoxetine can increase the level of pimozide through inhibition of CYP2D6. Fluoxetine can also prolong the QT interval. Clinical studies of pimozide with other antidepressants demonstrate an increase in drug interaction or QT prolongation. While a specific study with pimozide and fluoxetine has not been conducted, the potential for drug interactions or QT prolongation warrants restricting the concurrent use of pimozide and fluoxetine [see Contraindications (4.2), Warnings and Precautions (5.11), and Drug Interactions (7.7)]. Thioridazine —Thioridazine should not be administered with fluoxetine or within a minimum of 5 weeks after fluoxetine has been discontinued, because of the risk of QT prolongation [see Contraindications (4.2), Warnings and P …
Use in Specific Populations
openFDA Drug Labeling8 USE IN SPECIFIC POPULATIONS When using fluoxetine and olanzapine in combination, also refer to the Use in Specific Populations section of the package insert for Symbyax ® . Pregnancy: Fluoxetine should be used during pregnancy only if the potential benefit justifies the potential risks to the fetus. ( 8.1 ) Nursing Mothers: Breast-feeding is not recommended. ( 8.3 ) Pediatric Use: Safety and effectiveness of fluoxetine in patients < 8 years of age with Major Depressive Disorder and < 7 years of age with OCD have not been established. ( 8.4 ) Hepatic Impairment: Lower or less frequent dosing may be appropriate in patients with cirrhosis. ( 8.6 ) 8.1 Pregnancy Teratogenic Effects. Pregnancy Category C: Fluoxetine should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. All pregnancies have a background risk of birth defects, loss, or other adverse outcome regardless of drug exposure. Treatment of Pregnant Women During the First Trimester: There are no adequate and well controlled clinical studies on the use of fluoxetine in pregnant women. Results of a number of published epidemiological studies assessing the risk of fluoxetine exposure during the first trimester of pregnancy have demonstrated inconsistent results. More than ten cohort studies and case-control studies failed to demonstrate an increased risk for congenital malformations overall. However, one prospective cohort study conducted by the European Network of Teratology Information Services reported an increased risk of cardiovascular malformations in infants born to women (N = 253) exposed to fluoxetine during the first trimester of pregnancy compared to infants of women (N = 1,359) who were not exposed to fluoxetine. There was no specific pattern of cardiovascular malformations. Overall, however, a causal relationship has not been established. Nonteratogenic Effects: Based on data from published observational studies, exposure to SSRIs, particularly in the month before delivery, has been associated with a less than 2-fold increase in the risk of postpartum hemorrhage [see Warnings and Precautions (5.7) and Clinical Considerations] . Neonates exposed to fluoxetine and other SSRIs or serotonin and norepinephrine reuptake inhibitors (SNRIs), late in the third trimester have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding. Such complications can arise immediately upon delivery. Reported clinical findings have included respiratory distress, cyanosis, apnea, seizures, temperature instability, feeding difficulty, vomiting, hypoglycemia, hypotonia, hypertonia, hyperreflexia, tremor, jitteriness, irritability, and constant crying. These features are consistent with either a direct toxic effect of SSRIs and SNRIs or, possibly, a drug discontinuation syndrome. It should be noted that, in some cases, the clinical picture is consistent with serotonin syndrome [see Warnings and Precautions (5.2) ] . Infants exposed to SSRIs in pregnancy may have an increased risk for persistent pulmonary hypertension of the newborn (PPHN). PPHN occurs in 1 to 2 per 1,000 live births in the general population and is associated with substantial neonatal morbidity and mortality. Several recent epidemiological studies suggest a positive statistical association between SSRI use (including fluoxetine) in pregnancy and PPHN. Other studies do not show a significant statistical association. Physicians should also note the results of a prospective longitudinal study of 201 pregnant women with a history of major depression, who were either on antidepressants or had received antidepressants less than 12 weeks prior to their last menstrual period, and were in remission. Women who discontinued antidepressant medication during pregnancy showed a significant increase in relapse of their major depression compared to those women who remained on antidepressant medication throughout pregnancy. When treating a pregnant …
Mechanism of Action
openFDA Drug Labeling12.1 Mechanism of Action Although the exact mechanism of fluoxetine is unknown, it is presumed to be linked to its inhibition of CNS neuronal uptake of serotonin.
Description
openFDA Drug Labeling11 DESCRIPTION Fluoxetine (fluoxetine tablets, USP) is a selective serotonin reuptake inhibitor for oral administration. It is also marketed for the treatment of premenstrual dysphoric disorder (Sarafem ® , fluoxetine hydrochloride). It is designated (±)-N-methyl-3-phenyl-3-[(α,α,α-trifluoro- p -tolyl)oxy]propylamine hydrochloride and has the empirical formula of C 17 H 18 F 3 NO•HCl. Its molecular weight is 345.79. The structural formula is: Fluoxetine hydrochloride, USP is a white to off-white crystalline powder, it is freely soluble in alcohol and in methanol, sparingly soluble in water and in dichloromethane, practically insoluble in ether. Each tablet contains fluoxetine hydrochloride equivalent to 10 mg (32.3 μmol) or 20 mg (64.7 μmol) of fluoxetine. In addition, each tablet also contains the following inactive ingredients: microcrystalline cellulose, corn starch, hypromellose, crospovidone, magnesium stearate, colloidal silicon dioxide, titanium dioxide and polyethylene glycol. Structure
Overdosage
openFDA Drug Labeling10 OVERDOSAGE 10.1 Human Experience Worldwide exposure to fluoxetine hydrochloride is estimated to be over 38 million patients (circa 1999). Of the 1,578 cases of overdose involving fluoxetine hydrochloride, alone or with other drugs, reported from this population, there were 195 deaths. Among 633 adult patients who overdosed on fluoxetine hydrochloride alone, 34 resulted in a fatal outcome, 378 completely recovered, and 15 patients experienced sequelae after overdosage, including abnormal accommodation, abnormal gait, confusion, unresponsiveness, nervousness, pulmonary dysfunction, vertigo, tremor, elevated blood pressure, impotence, movement disorder, and hypomania. The remaining 206 patients had an unknown outcome. The most common signs and symptoms associated with nonfatal overdosage were seizures, somnolence, nausea, tachycardia, and vomiting. The largest known ingestion of fluoxetine hydrochloride in adult patients was 8 grams in a patient who took fluoxetine alone and who subsequently recovered. However, in an adult patient who took fluoxetine alone, an ingestion as low as 520 mg has been associated with lethal outcome, but causality has not been established. Among pediatric patients (ages 3 months to 17 years), there were 156 cases of overdose involving fluoxetine alone or in combination with other drugs. Six patients died, 127 patients completely recovered, one patient experienced renal failure, and 22 patients had an unknown outcome. One of the six fatalities was a 9 year old boy who had a history of OCD, Tourette’s syndrome with tics, attention deficit disorder, and fetal alcohol syndrome. He had been receiving 100 mg of fluoxetine daily for six months in addition to clonidine, methylphenidate, and promethazine. Mixed-drug ingestion or other methods of suicide complicated all six overdoses in children that resulted in fatalities. The largest ingestion in pediatric patients was 3 grams which was nonlethal. Other important adverse reactions reported with fluoxetine overdose (single or multiple drugs) include coma, delirium, ECG abnormalities (such as nodal rhythm, QT interval prolongation and ventricular arrhythmias, including Torsades de Pointes-type arrhythmias), hypotension, mania, neuroleptic malignant syndrome-like reactions, pyrexia, stupor, and syncope. 10.2 Animal Experience Studies in animals do not provide precise or necessarily valid information about the treatment of human overdose. However, animal experiments can provide useful insights into possible treatment strategies. The oral median lethal dose in rats and mice was found to be 452 and 248 mg/kg, respectively. Acute high oral doses produced hyperirritability and convulsions in several animal species. Among six dogs purposely overdosed with oral fluoxetine, five experienced grand mal seizures. Seizures stopped immediately upon the bolus intravenous administration of a standard veterinary dose of diazepam. In this short-term study, the lowest plasma concentration at which a seizure occurred was only twice the maximum plasma concentration seen in humans taking 80 mg/day, chronically. In a separate single-dose study, the ECG of dogs given high doses did not reveal prolongation of the PR, QRS, or QT intervals. Tachycardia and an increase in blood pressure were observed. Consequently, the value of the ECG in predicting cardiac toxicity is unknown. Nonetheless, the ECG should ordinarily be monitored in cases of human overdose [see Overdosage (10.3) ] . 10.3 Management of Overdose For current information on the management of fluoxetine overdose, contact a certified poison control center (1-800-222-1222 or www.poison.org). Treatment should consist of those general measures employed in the management of overdosage with any drug. Consider the possibility of multi-drug overdose. Ensure an adequate airway, oxygenation, and ventilation. Monitor cardiac rhythm and vital signs. Use general supportive and symptomatic measures. Induction of emesis is not recommended. A …
How Supplied / Storage and Handling
openFDA Drug Labeling16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied Fluoxetine Tablets, USP are available containing fluoxetine hydrochloride, USP equivalent to 10 mg or 20 mg of fluoxetine. Fluoxetine Tablets USP, 10 mg are white, film-coated, oval shaped biconvex, scored (functional) tablets debossed with “1” on the left of the score and “0” on the right of the score on one side of the tablet and “FL” on the other side. They are available as follows: Bottles of 30 NDC 84386-104-30 Bottles of 100 NDC 84386-104-01 Fluoxetine Tablets USP, 20 mg are white, film-coated, oval shaped biconvex, scored (functional) tablets debossed with “2” on the left of the score and “0” on the right of the score on one side of the tablet and “FL” on the other side. They are available as follows: Bottles of 30 NDC 84386-105-30 Bottles of 100 NDC 84386-105-01 16.2 Storage and Handling Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.] Protect from light. Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure. PHARMACIST: Dispense a Medication Guide with each prescription.
Adverse event reports
Source: openFDA FAERSAttributed to this product's most-reported active ingredient: FLUOXETINE HYDROCHLORIDE. Combination products with more than six active ingredients are not attributed, because a report count summed across a long ingredient list measures the list, not the medicine.
Packaging and NDCs
Source: NDC Directory| Package NDC | Product NDC | Labeler | Description | Marketing start |
|---|---|---|---|---|
| 62332-242-30 | 62332-242 | Alembic Pharmaceuticals Inc. | 30 TABLET, FILM COATED in 1 BOTTLE (62332-242-30) | April 7, 2017 |
| 62332-242-31 | 62332-242 | Alembic Pharmaceuticals Inc. | 100 TABLET, FILM COATED in 1 BOTTLE (62332-242-31) | April 7, 2017 |
| 62332-242-91 | 62332-242 | Alembic Pharmaceuticals Inc. | 1000 TABLET, FILM COATED in 1 BOTTLE (62332-242-91) | April 7, 2017 |
| 62332-243-30 | 62332-243 | Alembic Pharmaceuticals Inc. | 30 TABLET, FILM COATED in 1 BOTTLE (62332-243-30) | April 7, 2017 |
| 62332-243-31 | 62332-243 | Alembic Pharmaceuticals Inc. | 100 TABLET, FILM COATED in 1 BOTTLE (62332-243-31) | April 7, 2017 |
| 62332-243-91 | 62332-243 | Alembic Pharmaceuticals Inc. | 1000 TABLET, FILM COATED in 1 BOTTLE (62332-243-91) | April 7, 2017 |
| 59651-308-01 | 59651-308 | Aurobindo Pharma Limited | 100 TABLET, FILM COATED in 1 BOTTLE (59651-308-01) | April 8, 2020 |
| 59651-308-30 | 59651-308 | Aurobindo Pharma Limited | 30 TABLET, FILM COATED in 1 BOTTLE (59651-308-30) | April 8, 2020 |
| 59651-308-61 | 59651-308 | Aurobindo Pharma Limited | 6000 TABLET, FILM COATED in 1 BAG (59651-308-61) | April 8, 2020 |
| 59651-309-01 | 59651-309 | Aurobindo Pharma Limited | 100 TABLET, FILM COATED in 1 BOTTLE (59651-309-01) | April 8, 2020 |
| 59651-309-30 | 59651-309 | Aurobindo Pharma Limited | 30 TABLET, FILM COATED in 1 BOTTLE (59651-309-30) | April 8, 2020 |
| 59651-309-49 | 59651-309 | Aurobindo Pharma Limited | 4000 TABLET, FILM COATED in 1 BAG (59651-309-49) | April 8, 2020 |
| 59651-324-30 | 59651-324 | Aurobindo Pharma Limited | 30 TABLET, FILM COATED in 1 BOTTLE (59651-324-30) | June 10, 2020 |
| 59651-324-39 | 59651-324 | Aurobindo Pharma Limited | 3000 TABLET, FILM COATED in 1 BAG (59651-324-39) | June 10, 2020 |
| 84386-104-01 | 84386-104 | Aurobindo Pharma Limited | 100 TABLET, FILM COATED in 1 BOTTLE (84386-104-01) | January 15, 2026 |
| 84386-104-30 | 84386-104 | Aurobindo Pharma Limited | 30 TABLET, FILM COATED in 1 BOTTLE (84386-104-30) | January 15, 2026 |
| 84386-104-61 | 84386-104 | Aurobindo Pharma Limited | 6000 TABLET, FILM COATED in 1 BAG (84386-104-61) | January 15, 2026 |
| 84386-105-01 | 84386-105 | Aurobindo Pharma Limited | 100 TABLET, FILM COATED in 1 BOTTLE (84386-105-01) | January 15, 2026 |
| 84386-105-30 | 84386-105 | Aurobindo Pharma Limited | 30 TABLET, FILM COATED in 1 BOTTLE (84386-105-30) | January 15, 2026 |
| 84386-105-49 | 84386-105 | Aurobindo Pharma Limited | 4000 TABLET, FILM COATED in 1 BAG (84386-105-49) | January 15, 2026 |
| 84386-106-30 | 84386-106 | Aurobindo Pharma Limited | 30 TABLET, FILM COATED in 1 BOTTLE (84386-106-30) | January 15, 2026 |
| 84386-106-39 | 84386-106 | Aurobindo Pharma Limited | 3000 TABLET, FILM COATED in 1 BAG (84386-106-39) | January 15, 2026 |
| 63629-2201-1 | 63629-2201 | Bryant Ranch Prepack | 30 TABLET, FILM COATED in 1 BOTTLE (63629-2201-1) | October 28, 2022 |
| 63629-5930-1 | 63629-5930 | Bryant Ranch Prepack | 30 TABLET, FILM COATED in 1 BOTTLE (63629-5930-1) | June 2, 2025 |
| 71335-2597-1 | 71335-2597 | Bryant Ranch Prepack | 30 TABLET, FILM COATED in 1 BOTTLE (71335-2597-1) | February 12, 2025 |
| 71335-2778-1 | 71335-2778 | Bryant Ranch Prepack | 30 TABLET, FILM COATED in 1 BOTTLE (71335-2778-1) | October 13, 2025 |
| 71335-2778-2 | 71335-2778 | Bryant Ranch Prepack | 100 TABLET, FILM COATED in 1 BOTTLE (71335-2778-2) | October 13, 2025 |
| 71335-2784-1 | 71335-2784 | Bryant Ranch Prepack | 30 TABLET, FILM COATED in 1 BOTTLE (71335-2784-1) | August 18, 2025 |
| 71335-2784-2 | 71335-2784 | Bryant Ranch Prepack | 100 TABLET, FILM COATED in 1 BOTTLE (71335-2784-2) | August 18, 2025 |
| 72162-1506-3 | 72162-1506 | Bryant Ranch Prepack | 30 TABLET, FILM COATED in 1 BOTTLE (72162-1506-3) | April 8, 2024 |
| 43598-566-01 | 43598-566 | Dr.Reddy's Laboratories Inc. | 100 TABLET, FILM COATED in 1 BOTTLE (43598-566-01) | May 8, 2018 |
| 43598-566-10 | 43598-566 | Dr.Reddy's Laboratories Inc. | 1000 TABLET, FILM COATED in 1 BOTTLE (43598-566-10) | May 8, 2018 |
| 43598-566-30 | 43598-566 | Dr.Reddy's Laboratories Inc. | 30 TABLET, FILM COATED in 1 BOTTLE (43598-566-30) | May 8, 2018 |
| 55111-150-01 | 55111-150 | Dr.Reddy's Laboratories Limited | 100 TABLET, FILM COATED in 1 BOTTLE (55111-150-01) | September 30, 2016 |
| 55111-150-05 | 55111-150 | Dr.Reddy's Laboratories Limited | 500 TABLET, FILM COATED in 1 BOTTLE (55111-150-05) | September 30, 2016 |
| 55111-150-10 | 55111-150 | Dr.Reddy's Laboratories Limited | 1000 TABLET, FILM COATED in 1 BOTTLE (55111-150-10) | September 30, 2016 |
| 55111-150-30 | 55111-150 | Dr.Reddy's Laboratories Limited | 30 TABLET, FILM COATED in 1 BOTTLE (55111-150-30) | September 30, 2016 |
| 55111-150-78 | 55111-150 | Dr.Reddy's Laboratories Limited | 10 BLISTER PACK in 1 CARTON (55111-150-78) / 10 TABLET, FILM COATED in 1 BLISTER PACK (55111-150-79) | September 30, 2016 |
| 16714-112-01 | 16714-112 | NorthStar Rx LLC | 30 TABLET, FILM COATED in 1 BOTTLE (16714-112-01) | September 18, 2019 |
| 16714-112-02 | 16714-112 | NorthStar Rx LLC | 100 TABLET, FILM COATED in 1 BOTTLE (16714-112-02) | September 18, 2019 |
| 16714-113-01 | 16714-113 | NorthStar Rx LLC | 30 TABLET, FILM COATED in 1 BOTTLE (16714-113-01) | September 18, 2019 |
| 16714-113-02 | 16714-113 | NorthStar Rx LLC | 100 TABLET, FILM COATED in 1 BOTTLE (16714-113-02) | September 18, 2019 |
| 49884-468-11 | 49884-468 | Par Health USA, LLC | 30 TABLET, FILM COATED in 1 BOTTLE (49884-468-11) | November 16, 2017 |
| 70518-4428-0 | 70518-4428 | REMEDYREPACK INC. | 30 TABLET, FILM COATED in 1 BLISTER PACK (70518-4428-0) | August 6, 2025 |
| 70518-4429-0 | 70518-4429 | REMEDYREPACK INC. | 30 TABLET, FILM COATED in 1 BLISTER PACK (70518-4429-0) | August 8, 2025 |
| 50228-420-01 | 50228-420 | ScieGen Pharmaceuticals, Inc | 100 TABLET, FILM COATED in 1 BOTTLE (50228-420-01) | March 20, 2019 |
| 50228-420-10 | 50228-420 | ScieGen Pharmaceuticals, Inc | 1000 TABLET, FILM COATED in 1 BOTTLE (50228-420-10) | March 20, 2019 |
| 50228-420-30 | 50228-420 | ScieGen Pharmaceuticals, Inc | 30 TABLET, FILM COATED in 1 BOTTLE (50228-420-30) | March 20, 2019 |
| 50228-421-01 | 50228-421 | ScieGen Pharmaceuticals, Inc | 100 TABLET, FILM COATED in 1 BOTTLE (50228-421-01) | March 20, 2019 |
| 50228-421-10 | 50228-421 | ScieGen Pharmaceuticals, Inc | 1000 TABLET, FILM COATED in 1 BOTTLE (50228-421-10) | March 20, 2019 |
| 50228-421-30 | 50228-421 | ScieGen Pharmaceuticals, Inc | 30 TABLET, FILM COATED in 1 BOTTLE (50228-421-30) | March 20, 2019 |
| 62332-242 | 62332-242 | Alembic Pharmaceuticals Inc. | — | April 7, 2017 |
| 62332-243 | 62332-243 | Alembic Pharmaceuticals Inc. | — | April 7, 2017 |
| 59651-308 | 59651-308 | Aurobindo Pharma Limited | — | April 8, 2020 |
| 59651-309 | 59651-309 | Aurobindo Pharma Limited | — | April 8, 2020 |
| 59651-324 | 59651-324 | Aurobindo Pharma Limited | — | June 10, 2020 |
| 84386-104 | 84386-104 | Aurobindo Pharma Limited | — | January 15, 2026 |
| 84386-105 | 84386-105 | Aurobindo Pharma Limited | — | January 15, 2026 |
| 84386-106 | 84386-106 | Aurobindo Pharma Limited | — | January 15, 2026 |
| 63629-2201 | 63629-2201 | Bryant Ranch Prepack | — | November 16, 2017 |
| 63629-5930 | 63629-5930 | Bryant Ranch Prepack | — | April 7, 2017 |
| 71335-2597 | 71335-2597 | Bryant Ranch Prepack | — | June 10, 2020 |
| 71335-2778 | 71335-2778 | Bryant Ranch Prepack | — | April 8, 2020 |
| 71335-2784 | 71335-2784 | Bryant Ranch Prepack | — | April 8, 2020 |
| 72162-1506 | 72162-1506 | Bryant Ranch Prepack | — | November 16, 2017 |
| 43598-566 | 43598-566 | Dr.Reddy's Laboratories Inc. | — | May 8, 2018 |
| 55111-150 | 55111-150 | Dr.Reddy's Laboratories Limited | — | September 30, 2016 |
| 16714-112 | 16714-112 | NorthStar Rx LLC | — | September 18, 2019 |
| 16714-113 | 16714-113 | NorthStar Rx LLC | — | September 18, 2019 |
| 49884-468 | 49884-468 | Par Health USA, LLC | — | November 16, 2017 |
| 70518-4428 | 70518-4428 | REMEDYREPACK INC. | — | August 6, 2025 |
| 70518-4429 | 70518-4429 | REMEDYREPACK INC. | — | August 8, 2025 |
| 50228-420 | 50228-420 | ScieGen Pharmaceuticals, Inc | — | March 20, 2019 |
| 50228-421 | 50228-421 | ScieGen Pharmaceuticals, Inc | — | March 20, 2019 |
Sources for this page
| Dataset | Agency | Used for |
|---|---|---|
| NDC Directory | FDA | Identity, ingredients, strengths, forms, routes, labelers, packages |
| Drugs@FDA | FDA | Application, sponsor, submissions, review documents, marketing status |
| Orange Book | FDA | Therapeutic equivalence codes, reference drug flags, patents, exclusivity |
| Drug Labeling | FDA / NLM | Prescribing information reproduced above |
| FAERS | FDA | Adverse event report counts |
Generated September 25, 2026 · 12 sections on this page.