Risperidone

Warnings and Precautions ( 5.3 , 5.4 ) 2/2021 Dosage and Administration ( 2.6 ) 3/2022

1 INDICATIONS AND USAGE Risperidone oral solution is an atypical antipsychotic indicated for: Treatment of schizophrenia. (1.1) As monotherapy or adjunctive therapy with lithium or valproate, for the treatment of acute manic or mixed episodes associated with Bipolar I Disorder. (1.2) Treatment of irritability associated with autistic disorder. (1.3) 1.1 Schizophrenia Risperidone oral solution is indicated for the treatment of schizophrenia. Efficacy was established in 4 short-term trials in adults, 2 short-term trials in adolescents (ages 13 to 17 years) and one long-term maintenance trial in adults [see Clinical Studies (14.1) ] . 1.2 Bipolar Mania Monotherapy Risperidone oral solution is indicated for the treatment of acute manic or mixed episodes associated with Bipolar I Disorder. Efficacy was established in 2 short-term trials in adults and one short-term trial in children and adolescents (ages 10 to 17 years) [see Clinical Studies (14.2) ] . Adjunctive Therapy Risperidone oral solution adjunctive therapy with lithium or valproate is indicated for the treatment of acute manic or mixed episodes associated with Bipolar I Disorder. Efficacy was established in one short-term trial in adults [see Clinical Studies (14.3) ]. 1.3 Irritability Associated with Autistic Disorder Risperidone oral solution is indicated for the treatment of irritability associated with autistic disorder, including symptoms of aggression towards others, deliberate self-injuriousness, temper tantrums and quickly changing moods. Efficacy was established in 3 short-term trials in children and adolescents (ages 5 to 17 years) [see Clinical Studies (14.4) ] .

2 DOSAGE AND ADMINISTRATION Table 1. Recommended Daily Dosage by Indication Initial Dose Titration (Increments) Target Dose Effective Dose Range Schizophrenia: adults ( 2.1 ) 2 mg 1 mg to 2 mg 4 mg to 8 mg 4 mg to 16 mg Schizophrenia: adolescents ( 2.2 ) 0.5 mg 0.5 mg to 1 mg 3 mg 1 mg to 6 mg Bipolar mania: adults ( 2.2 ) 2 mg to 3 mg 1 mg 1 mg to 6 mg 1 mg to 6 mg Bipolar mania: children and adolescents ( 2.2 ) 0.5 mg 0.5 mg to 1 mg 1 mg to 2.5 mg 1 mg to 6 mg Irritability in autistic disorder ( 2.3 ) 0.25 mg Can increase to 0.5 mg by Day 4: (body weight less than 20 kg) 0.5 mg Can increase to 1 mg by Day 4: (body weight greater than or equal to 20 kg) After Day 4, at intervals of > 2 weeks: 0.25 mg (body weight less than 20 kg) 0.5 mg: (body weight greater than or equal to 20 kg) 0.5 mg: (body weight less than 20 kg) 1 mg: (body weight greater than or equal to 20 kg) 0.5 mg to 3 mg Severe Renal and Hepatic Impairment in Adults: use a lower starting dose of 0.5 mg twice daily. May increase to dosages above 1.5 mg twice daily at intervals of one week or longer. Recommended daily dosage: Initial Dose Target Dose Effective Dose Range Schizophrenia: adults (2.1) 2 mg 4 mg to 8 mg 4 mg to 16 mg Schizophrenia: adolescents (2.1) 0.5 mg 3 mg 1 mg to 6 mg Bipolar mania: adults (2.2) 2 mg to 3 mg 1 mg to 6 mg 1 mg to 6 mg Bipolar mania: in children and adolescents (2.2) 0.5 mg 1 mg to 2.5 mg 1 mg to 6 mg Irritability associated with autistic disorder (2.3) 0.25 mg (Weight < 20 kg) 0.5 mg (Weight ≥ 20 kg) 0.5 mg (< 20 kg) 1 mg (≥ 20 kg) 0.5 mg to 3 mg Severe Renal or Hepatic Impairment in Adults: Use a lower starting dose of 0.5 mg twice daily. May increase to dosages above 1.5 mg twice daily at intervals of at least one week. (2.4) Oral Solution: Can be administered directly from oral dosing syringe or mixed with beverage (water, coffee, orange juice, or low-fat milk). (2.6) 2.1 Schizophrenia Adults Usual Initial Dose Risperidone oral solution can be administered once or twice daily. Initial dosing is 2 mg per day. May increase the dose at intervals of 24 hours or greater, in increments of 1 mg per day to 2 mg per day, as tolerated, to a recommended dose of 4 mg per day to 8 mg per day. In some patients, slower titration may be appropriate. Efficacy has been demonstrated in a range of 4 mg per day to 16 mg per day. However, doses above 6 mg per day for twice daily dosing were not demonstrated to be more efficacious than lower doses, were associated with more extrapyramidal symptoms and other adverse effects, and are generally not recommended. In a single study supporting once-daily dosing, the efficacy results were generally stronger for 8 mg than for 4 mg. The safety of doses above 16 mg per day has not been evaluated in clinical trials [see Clinical Studies (14.1) ] . Adolescents The initial dose is 0.5 mg once daily, administered as a single-daily dose in the morning or evening. The dose may be adjusted at intervals of 24 hours or greater, in increments of 0.5 mg per day or 1 mg per day, as tolerated, to a recommended dose of 3 mg per day. Although efficacy has been demonstrated in studies of adolescent patients with schizophrenia at doses between 1 mg per day to 6 mg per day, no additional benefit was observed above 3 mg per day, and higher doses were associated with more adverse events. Doses higher than 6 mg per day have not been studied. Patients experiencing persistent somnolence may benefit from administering half the daily dose twice daily. Maintenance Therapy While it is unknown how long a patient with schizophrenia should remain on risperidone oral solution, the effectiveness of risperidone oral solution, 2 mg per day to 8 mg per day at delaying relapse was demonstrated in a controlled trial in adult patients who had been clinically stable for at least 4 weeks and were then followed for a period of 1 to 2 years [see Clinical Studies (14.1) ] . Both adult and adolescent patients who respond acutely should generally be maint …

3 DOSAGE FORMS AND STRENGTHS Risperidone Tablets are available in the following strengths and colors: 0.5 mg (red-brown), 1 mg (white), 2 mg (orange), 3 mg (yellow), and 4 mg (green). All are capsule shaped, and imprinted with "PATR" on one side and either "Ris 0.5", "R1", "R2", "R3", or "R4" on the other side according to their respective strengths. Risperidone Oral Solution is available in a 1 mg/mL strength. Risperidone Orally Disintegrating Tablets are available in the following strengths, colors, and shapes: 0.5 mg (light coral, round), 1 mg (light coral, square), 2 mg (coral, square), 3 mg (coral, round), and 4 mg (coral, round). All are biconvex and etched on one side with "P0.5", "P1", "P2", "P3", or "P4" according to their respective strengths. Tablets: 0.5 mg, 1 mg, 2 mg, 3 mg, and 4 mg ( 3 ) Oral solution: 1 mg per mL ( 3 ) Orally disintegrating tablets: 0.5 mg, 1 mg, 2 mg, 3 mg, and 4 mg ( 3 )

4 CONTRAINDICATIONS Risperidone Tablets, Oral Solution, or Orally Disintegrating Tablets are contraindicated in patients with a known hypersensitivity to either risperidone or paliperidone, or to any of the excipients in the Risperidone Tablets, Oral Solution, or Orally Disintegrating Tablets formulations. Hypersensitivity reactions, including anaphylactic reactions and angioedema, have been reported in patients treated with risperidone and in patients treated with paliperidone. Paliperidone is a metabolite of risperidone. Known hypersensitivity to risperidone, paliperidone, or to any excipients in Risperidone Tablets, Oral Solution, or Orally Disintegrating Tablets. ( 4 )

6 ADVERSE REACTIONS The following are discussed in more detail in other sections of the labeling: Increased mortality in elderly patients with dementia-related psychosis [ see Boxed Warning and Warnings and Precautions ( 5.1 ) ] Cerebrovascular adverse events, including stroke, in elderly patients with dementia-related psychosis [ see Warnings and Precautions ( 5.2 ) ] Neuroleptic malignant syndrome [ see Warnings and Precautions ( 5.3 ) ] Tardive dyskinesia [ see Warnings and Precautions ( 5.4 ) ] Metabolic Changes (Hyperglycemia and diabetes mellitus, Dyslipidemia, and Weight Gain) [ see Warnings and Precautions ( 5.5 ) ] Hyperprolactinemia [ see Warnings and Precautions ( 5.6 ) ] Orthostatic hypotension [ see Warnings and Precautions ( 5.7 ) ] Falls [ see Warnings and Precautions ( 5.8 ) ] Leukopenia, neutropenia, and agranulocytosis [ see Warnings and Precautions ( 5.9 ) ] Potential for cognitive and motor impairment [ see Warnings and Precautions ( 5.10 ) ] Seizures [ see Warnings and Precautions ( 5.11 ) ] Dysphagia [ see Warnings and Precautions ( 5.12 ) ] Priapism [ see Warnings and Precautions ( 5.13 ) ] Disruption of body temperature regulation [ see Warnings and Precautions ( 5.14 ) ] The most common adverse reactions in clinical trials (>5% and twice placebo) were parkinsonism, akathisia, dystonia, tremor, sedation, dizziness, anxiety, blurred vision, nausea, vomiting, upper abdominal pain, stomach discomfort, dyspepsia, diarrhea, salivary hypersecretion, constipation, dry mouth, increased appetite, increased weight, fatigue, rash, nasal congestion, upper respiratory tract infection, nasopharyngitis, and pharyngolaryngeal pain. The most common adverse reactions that were associated with discontinuation from clinical trials (causing discontinuation in >1% of adults and/or >2% of pediatrics) were nausea, somnolence, sedation, vomiting, dizziness, and akathisia [ see Adverse Reactions , Discontinuations Due to Adverse Reactions ( 6.1 ) ]. The data described in this section are derived from a clinical trial database consisting of 9803 adult and pediatric patients exposed to one or more doses of risperidone for the treatment of schizophrenia, bipolar mania, autistic disorder, and other psychiatric disorders in pediatrics and elderly patients with dementia. Of these 9803 patients, 2687 were patients who received risperidone while participating in double-blind, placebo-controlled trials. The conditions and duration of treatment with risperidone varied greatly and included (in overlapping categories) double-blind, fixed- and flexible-dose, placebo- or active-controlled studies and open-label phases of studies, inpatients and outpatients, and short-term (up to 12 weeks) and longer-term (up to 3 years) exposures. Safety was assessed by collecting adverse events and performing physical examinations, vital signs, body weights, laboratory analyses, and ECGs. The most common adverse reactions in clinical trials (≥ 5% and twice placebo) were parkinsonism, akathisia, dystonia, tremor, sedation, dizziness, anxiety, blurred vision, nausea, vomiting, upper abdominal pain, stomach discomfort, dyspepsia, diarrhea, salivary hypersecretion, constipation, dry mouth, increased appetite, increased weight, fatigue, rash, nasal congestion, upper respiratory tract infection, nasopharyngitis, and pharyngolaryngeal pain. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Tris Pharma, Inc. (1-732-940-0358) 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 the rates observed in clinical practice. Commonly-Observed Adverse Reactions in Double-Blind, Placebo-Controlled Clinical Trials – Schizophrenia Adult Patients with Schizophrenia Table 8 lists the adverse reactions reported in 2% or mor …

7 DRUG INTERACTIONS Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. Increase the risperidone dose up to double the patient’s usual dose. Titrate slowly. ( 7.1 ) Fluoxetine, paroxetine, and other CYP 2D6 enzyme inhibitors increase plasma concentrations of risperidone. Reduce the initial dose. Do not exceed a final dose of 8 mg per day of risperidone. ( 7.1 ) 7.1 Pharmacokinetic-related Interactions The dose of risperidone should be adjusted when used in combination with CYP2D6 enzyme inhibitors (e.g., fluoxetine, and paroxetine) and enzyme inducers (e.g., carbamazepine) [ see Table 18 and Dosage and Administration (2.5) ]. Dose adjustment is not recommended for risperidone when co-administered with ranitidine, cimetidine, amitriptyline, or erythromycin [ see T able 18 ]. Table 18. Summary of Effect of Co-administered Drugs on Exposure to Active Moiety (Risperidone + 9-HydroxyRisperidone) in Healthy Subjects or Patients with Schizophrenia Co-administered Drug Dosing Schedule Effect on Active Moiety (Risperidone + 9- Hydroxy-Risperidone (Ratio*) Risperidone Dose Recommendation Co-administered Drug Risperidone AUC C max Enzyme (CYP2D6) Inhibitors Fluoxetine 20 mg/day 2 or 3 mg twice daily 1.4 1.5 Re-evaluate dosing. Do not exceed 8 mg/day Paroxetine 10 mg/day 4 mg/day 1.3 - Re-evaluate dosing. Do not exceed 8 mg/day 20 mg/day 4 mg/day 1.6 - 40 mg/day 4 mg/day 1.8 - Enzyme (CYP3A/ PgP inducers) Inducers Carbamazepine 573 ± 168 mg/day 3 mg twice daily 0.51 0.55 Titrate dose upwards. Do not exceed twice the patient’s usual dose Enzyme (CYP3A) Inhibitors Ranitidine 150 mg twice daily 1 mg single dose 1.2 1.4 Dose adjustment not needed Cimetidine 400 mg twice daily 1 mg single dose 1.1 1.3 Dose adjustment not needed Erythromycin 500 mg four times daily 1 mg single dose 1.1 0.94 Dose adjustment not needed Other Drugs Amitriptyline 50 mg twice daily 3 mg twice daily 1.2 1.1 Dose adjustment not needed *Change relative to reference Effect of Risperidone on other drugs Lithium Repeated oral doses of risperidone (3 mg twice daily) did not affect the exposure (AUC) or peak plasma concentrations (C max ) of lithium (n = 13). Dose adjustment for lithium is not recommended. Valproate Repeated oral doses of risperidone (4 mg once daily) did not affect the pre-dose or average plasma concentrations and exposure (AUC) of valproate (1000 mg/day in three divided doses) compared to placebo (n = 21). However, there was a 20% increase in valproate peak plasma concentration (C max ) after concomitant administration of risperidone. Dose adjustment for valproate is not recommended. Digoxin Risperidone (0.25 mg twice daily) did not show a clinically relevant effect on the pharmacokinetics of digoxin. Dose adjustment for digoxin is not recommended. 7.2 Pharmacodynamic-related Interactions Centrally Acting Drugs and Alcohol Given the primary CNS effects of risperidone, caution should be used when risperidone is taken in combination with other centrally acting drugs and alcohol. Drugs with Hypotensive Effects Because of its potential for inducing hypotension, risperidone may enhance the hypotensive effects of other therapeutic agents with this potential. Levodopa and Dopamine Agonists Risperidone may antagonize the effects of levodopa and dopamine agonists. Methylphenidate Concomitant use with methylphenidate, when there is change in dosage of either medication, may increase the risk of extrapyramidal symptoms (EPS). Monitor for symptoms of EPS with concomitant use of risperidone and methylphenidate [ see Adverse Reactions (6.2) ]. Clozapine Chronic administration of clozapine with risperidone may decrease the clearance of risperidone.

8 USE IN SPECIFIC POPULATIONS Pregnancy: May cause extrapyramidal and/or withdrawal symptoms in neonates with third trimester exposure. ( 8.1 ) 8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to atypical antipsychotics, including risperidone, during pregnancy. Healthcare providers are encouraged to register patients by contacting the National Pregnancy Registry for Atypical Antipsychotics at 1-866-961-2388 or online at http://womensmentalhealth.org/clinical-and-research-programs/pregnancyregistry/. Risk Summary Neonates exposed to antipsychotic drugs during the third trimester of pregnancy are at risk for extrapyramidal and/or withdrawal symptoms following delivery ( see Clinical Considerations ). Overall, available data from published epidemiologic studies of pregnant women exposed to risperidone have not established a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes ( see Data ). There are risks to the mother associated with untreated schizophrenia or bipolar I disorder and with exposure to antipsychotics, including risperidone, during pregnancy ( see Clinical Considerations ). Oral administration of risperidone to pregnant mice caused cleft palate at doses 3 to 4 times the maximum recommended human dose (MRHD) with maternal toxicity observed at 4-times MRHD based on mg/m 2 body surface area. Risperidone was not teratogenic in rats or rabbits at doses up to 6-times the MRHD based on mg/m 2 body surface area. Increased stillbirths and decreased birth weight occurred after oral risperidone administration to pregnant rats at 1.5-times the MRHD based on mg/m 2 body surface area. Learning was impaired in offspring of rats when the dams were dosed at 0.6-times the MRHD and offspring mortality increased at doses 0.1 to 3 times the MRHD based on mg/m 2 body surface area. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-associated maternal and/or embryo/fetal risk There is a risk to the mother from untreated schizophrenia or bipolar I disorder, including increased risk of relapse, hospitalization, and suicide. Schizophrenia and bipolar I disorder are associated with increased adverse perinatal outcomes, including preterm birth. It is not known if this is a direct result of the illness or other comorbid factors. Fetal/Neonatal Adverse Reactions Extrapyramidal and/or withdrawal symptoms, including agitation, hypertonia, hypotonia, tremor, somnolence, respiratory distress, and feeding disorder have been reported in neonates who were exposed to antipsychotic drugs, including risperidone, during the third trimester of pregnancy. These symptoms have varied in severity. Monitor neonates for extrapyramidal and/or withdrawal symptoms and manage symptoms appropriately. Some neonates recovered within hours or days without specific treatment; others required prolonged hospitalization. Data Human Data Published data from observational studies, birth registries, and case reports on the use of atypical antipsychotics during pregnancy do not report a clear association with antipsychotics and major birth defects. A prospective observational study including 6 women treated with risperidone demonstrated placental passage of risperidone. A retrospective cohort study from a Medicaid database of 9258 women exposed to antipsychotics during pregnancy did not indicate an overall increased risk for major birth defects. There was a small increase in the risk of major birth defects (RR=1.26, 95% CI 1.02-1.56) and of cardiac malformations (RR=1.26, 95% CI 0.88- 1.81) in a subgrou …

12.1 Mechanism of Action The mechanism of action of risperidone in schizophrenia is unclear. The drug's therapeutic activity in schizophrenia could be mediated through a combination of dopamine Type 2 (D 2 ) and serotonin Type 2 (5HT 2 ) receptor antagonism. The clinical effect from risperidone results from the combined concentrations of risperidone and its major metabolite, 9-hydroxyrisperidone (paliperidone) [see Clinical Pharmacology ( 12.3 )] . Antagonism at receptors other than D 2 and 5HT 2 may explain some of the other effects of risperidone [see Clinical Pharmacology ( 12.1 )].

11 DESCRIPTION Risperidone contains risperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. The chemical designation is 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 2 and its molecular weight is 410.49. The structural formula is: Risperidone is a white to slightly beige powder. It is practically insoluble in water, freely soluble in methylene chloride, and soluble in methanol and 0.1 N HCl. Risperidone Tablets are for oral administration and available in 0.5 mg (red-brown), 1 mg (white), 2 mg (orange), 3 mg (yellow), and 4 mg (green) strengths. Risperidone tablets contain the following inactive ingredients: colloidal silicon dioxide, hypromellose, lactose, magnesium stearate, microcrystalline cellulose, propylene glycol, sodium lauryl sulfate, and starch (corn). The 0.5 mg, 2 mg, 3 mg, and 4 mg tablets also contain talc and titanium dioxide. The 0.5 mg tablets contain red iron oxide; the 2 mg tablets contain FD&C Yellow No. 6 Aluminum Lake; the 3 mg and 4 mg tablets contain D&C Yellow No. 10; the 4 mg tablets contain FD&C Blue No. 2 Aluminum Lake. Risperidone is also available as a 1 mg/mL Oral Solution. Risperidone Oral Solution contains the following inactive ingredients: tartaric acid, benzoic acid, sodium hydroxide, and purified water. Risperidone Orally Disintegrating Tablets are available in 0.5 mg (light coral), 1 mg (light coral), 2 mg (coral), 3 mg (coral), and 4 mg (coral) strengths. Risperidone Orally Disintegrating Tablets contain the following inactive ingredients: Amberlite ® resin, gelatin, mannitol, glycine, simethicone, carbomer, sodium hydroxide, aspartame, red ferric oxide, and peppermint oil. In addition, the 2 mg, 3 mg, and 4 mg Risperidone Orally Disintegrating Tablets contain xanthan gum. Chemical Structure

10 OVERDOSAGE 10.1 Human Experience Premarketing experience included eight reports of acute risperidone overdosage with estimated doses ranging from 20 to 300 mg and no fatalities. In general, reported signs and symptoms were those resulting from an exaggeration of the drug's known pharmacological effects, i.e., drowsiness and sedation, tachycardia and hypotension, and extrapyramidal symptoms. One case, involving an estimated overdose of 240 mg, was associated with hyponatremia, hypokalemia, prolonged QT, and widened QRS. Another case, involving an estimated overdose of 36 mg, was associated with a seizure. Postmarketing experience includes reports of acute risperidone overdosage, with estimated doses of up to 360 mg. In general, the most frequently reported signs and symptoms are those resulting from an exaggeration of the drug's known pharmacological effects, i.e., drowsiness, sedation, tachycardia, hypotension, and extrapyramidal symptoms. Other adverse reactions reported since market introduction related to risperidone overdose include prolonged QT interval and convulsions. Torsade de pointes has been reported in association with combined overdose of risperidone and paroxetine. 10.2 Management of Overdosage For the most up to date information on the management of risperidone overdosage, contact a certified poison control center (1-800-222-1222 or www.poison.org). Provide supportive care including close medical supervision and monitoring. Treatment should consist of general measures employed in the management of overdosage with any drug. Consider the possibility of multiple drug overdosage. Ensure an adequate airway, oxygenation, and ventilation. Monitor cardiac rhythm and vital signs. Use supportive and symptomatic measures. There is no specific antidote to risperidone.

16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied Risperidone Tablets Risperidone Tablets are imprinted "PATR" on one side and either "Ris 0.5", "R1", "R2", "R3", or "R4" according to their respective strengths. 0.5 mg red-brown, capsule-shaped tablets: bottles of 60 NDC 50458-591-60, bottles of 500 NDC 50458-591-50, and hospital unit dose blister packs of 100 NDC 50458-591-10. 1 mg white, capsule-shaped tablets: bottles of 60 NDC 50458-592-60, bottles of 500 NDC 50458-592-50, and hospital unit dose blister packs of 100 NDC 50458-592-10. 2 mg orange, capsule-shaped tablets: bottles of 60 NDC 50458-593-60, bottles of 500 NDC 50458-593-50, and hospital unit dose blister packs of 100 NDC 50458-593-10. 3 mg yellow, capsule-shaped tablets: bottles of 60 NDC 50458-594-60, bottles of 500 NDC 50458-594-50, and hospital unit dose blister packs of 100 NDC 50458-594-10. 4 mg green, capsule-shaped tablets: bottles of 60 NDC 50458-595-60 and hospital unit dose blister packs of 100 NDC 50458-595-10. Risperidone Oral Solution Risperidone 1 mg/mL Oral Solution (NDC 50458-596-01) is supplied in 30 mL bottles with a calibrated (in milliliters) oral dosing syringe. The minimum calibrated volume is 0.25 mL, while the maximum calibrated volume is 3 mL. Risperidone Orally Disintegrating Tablets Risperidone Orally Disintegrating Tablets are etched on one side with "P0.5", "P1", "P2", "P3", or "P4" according to their respective strengths. Risperidone Orally Disintegrating Tablets 0.5 mg, 1 mg, and 2 mg are packaged in blister packs of 4 (2 × 2) tablets. Risperidone Orally Disintegrating Tablets 3 mg and 4 mg are packaged in a child-resistant pouch containing a blister with 1 tablet. 0.5 mg light coral, round, biconvex tablets: 7 blister packages (4 tablets each) per box, NDC 50458-601-28. 1 mg light coral, square, biconvex tablets: 7 blister packages (4 tablets each) per box, NDC 50458-602-28. 2 mg coral, square, biconvex tablets: 7 blister packages (4 tablets each) per box, NDC 50458-603-28. 3 mg coral, round, biconvex tablets: 28 blisters per box, NDC 50458-604-28. 4 mg coral, round, biconvex tablets: 28 blisters per box, NDC 50458-605-28. 16.2 Storage and Handling Risperidone Tablets should be stored at controlled room temperature 15 °C to 25 °C (59 °F to 77 °F). Protect from light and moisture. Risperidone 1 mg/mL Oral Solution should be stored at controlled room temperature 15 °C to 25 °C (59 °F to 77 °F). Protect from light and freezing. Risperidone Orally Disintegrating Tablets should be stored at controlled room temperature 15 °C to 25 °C (59 °F to 77 °F). Keep out of reach of children.