Nucynta

Boxed Warning 12/2025 Indications and Usage ( 1 ) 12/2025 Dosage and Administration ( 2.1 , 2.3 , 2.6 ) 12/2025 Warnings and Precautions ( 5.1 , 5.2 , 5.3 , 5.12 , 5.14 ) 12/2025

1 INDICATIONS AND USAGE NUCYNTA ER (tapentadol) is indicated for the management of: Severe and persistent pain in adults that requires an opioid analgesic and that cannot be adequately treated with alternative options, including immediate-release opioids. Severe and persistent neuropathic pain associated with diabetic peripheral neuropathy (DPN) in adults that requires an opioid analgesic and that cannot be adequately treated with alternative options, including immediate-release opioids. NUCYNTA ER is an opioid agonist indicated for the management of: severe and persistent pain in adults that requires an opioid analgesic and that cannot be adequately treated with alternative options, including immediate-release opioids. ( 1 ) severe and persistent neuropathic pain associated with diabetic peripheral neuropathy (DPN) in adults that requires opioid analgesic and that cannot be adequately treated with alternative options, including immediate-release opioids. ( 1 ) Limitations of Use Because of the risks of addiction, abuse, misuse, overdose, and death, which can occur at any dosage or duration and persist over the course of therapy, reserve opioid analgesics, including NUCYNTA ER, for use in patients for whom alternative treatment options are ineffective, not tolerated, or would be otherwise inadequate to provide sufficient management of pain. ( 1 , 5.1 ) NUCYNTA ER is not indicated as an as-needed (prn) analgesic. ( 1 ) Limitations of Use Because of the risks of addiction, abuse, misuse, overdose, and death, which can occur at any dosage or duration and persist over the course of therapy [see Warnings and Precautions (5.1) ] , reserve opioid analgesics, including NUCYNTA ER, for use in patients for whom alternative treatment options are ineffective, not tolerated, or would be otherwise inadequate to provide sufficient management of pain. NUCYNTA ER is not indicated as an as-needed (prn) analgesic.

2 DOSAGE AND ADMINISTRATION NUCYNTA ER should be prescribed only by healthcare professionals who are knowledgeable about the use of extended-release/long-acting opioids and how to mitigate the associated risks. ( 2.1 ) Use the lowest effective dosage for the shortest duration of time consistent with individual patient treatment goals. Reserve titration to higher doses of NUCYNTA ER for patients in whom lower doses are insufficiently effective and in whom the expected benefits of using a higher dose opioid clearly outweigh the substantial risks ( 2.1 ). Initiate the dosing regimen for each patient individually, taking into account the patient's underlying cause and severity of pain, prior analgesic treatment, and response, and risk factors for addiction, abuse, and misuse. ( 5.1 ) Respiratory depression can occur at any time during opioid therapy, especially when initiating and following dosage increases with NUCYNTA ER. Consider this risk when selecting an initial dose and when making dose adjustments. ( 2.1 , 5.2 ) Discuss opioid overdose reversal agents and options for acquiring them with the patient and/or caregiver, both when initiating and renewing treatment with NUCYNTA ER, especially if the patient has additional risk factors for overdose, or close contacts at risk for exposure and overdose.( 2.2 , 5.1 , 5.2 , 5.3 ) NUCYNTA ER is administered orally twice daily (approximately every 12 hours). ( 2.1 ) Instruct patients to swallow NUCYNTA ER tablets intact, and not to cut, break, chew, crush, or dissolve the tablets (risk of potentially fatal overdose). ( 2.1 , 5.1 ) Instruct patients to take tablets one at a time, with enough water to ensure complete swallowing immediately after placing in mouth.( 2.1 ) Do not exceed a total daily dose of NUCYNTA ER of 500 mg. ( 2.1 ) For patients who are not opioid tolerant, initiate treatment with 50 mg tablet orally twice daily (approximately every 12 hours). See full prescribing information for instructions on conversion, titration, and maintenance of therapy. ( 2.3 , 2.4 ) Titrate patients with dose increases of 50 mg no more than twice daily every three days. ( 2.4 ) Periodically reassess patients receiving NUCYNTA ER to evaluate the continued need for opioid analgesics to maintain pain control, for the signs or symptoms of adverse reactions, and for the development of addiction, abuse, or misuse. ( 2.4 ) Moderate Hepatic Impairment: Initiate treatment with 50 mg NUCYNTA ER no more than every 24 hours. Do not exceed 100 mg per day. Regularly evaluate for respiratory and central nervous system depression ( 2.5 ) Do not rapidly reduce or abruptly discontinue NUCYNTA ER in a physically-dependent patient because rapid reduction or abrupt discontinuation of opioid analgesics has resulted in serious withdrawal symptoms, uncontrolled pain, and suicide. ( 2.6 , 5.14 ) 2.1 Important Dosage and Administration Instructions NUCYNTA ER should be prescribed only by healthcare professionals who are knowledgeable about the use of extended-release/long-acting opioids and how to mitigate the associated risks. Use the lowest effective dosage for the shortest duration of time consistent with individual patient treatment goals [see Warnings and Precautions (5) ] . Because the risk of overdose increases as opioid doses increase, reserve titration to higher doses of NUCYNTA ER for patients in whom lower doses are insufficiently effective and in whom the expected benefits of using a higher dose opioid clearly outweigh the substantial risks. Initiate the dosing regimen for each patient individually, taking into account the patient's underlying cause and severity of pain, prior analgesic treatment and response, and risk factors for addiction, abuse, and misuse [see Warnings and Precautions (5.1) ] Respiratory depression can occur at any time during opioid therapy, especially when initiating and following dosage increases with NUCYNTA ER. Consider this risk when selecting an initial dose and when making dose …

3 DOSAGE FORMS AND STRENGTHS NUCYNTA ER 50 mg, 100 mg, 150 mg, 200 mg and 250 mg extended-release tablets are available in the following colors and prints: 50 mg extended-release tablets are white oblong-shaped with a black print "OMJ 50" on one side 100 mg extended-release tablets are light-blue oblong-shaped with a black print "OMJ 100" on one side 150 mg extended-release tablets are blue-green oblong-shaped with a black print "OMJ 150" on one side 200 mg extended-release tablets are blue oblong-shaped with a depression in the middle running lengthwise on each side and a black print "OMJ 200" on one side 250 mg extended-release tablets are dark blue oblong-shaped with a depression in the middle running lengthwise on each side and a white print "OMJ 250" on one side. Extended-release tablets: 50 mg, 100 mg, 150 mg, 200 mg, 250 mg ( 3 )

4 CONTRAINDICATIONS NUCYNTA ER is contraindicated in patients with: Significant respiratory depression Acute or severe bronchial asthma or hypercarbia in an unmonitored setting or in the absence of resuscitative equipment Known or suspected gastrointestinal obstruction, including paralytic ileus Hypersensitivity (e.g., anaphylaxis, angioedema) to tapentadol or to any other ingredients of the product [see Adverse Reactions (6.2) ] . Concurrent use of monoamine oxidase inhibitors (MAOIs) or use of MAOIs within the last 14 days [see Drug Interactions (7) ]. Significant respiratory depression ( 4 ) Acute or severe bronchial asthma ( 4 ) Known or suspected paralytic ileus ( 4 ) Hypersensitivity to tapentadol or to any other ingredients of the product ( 4 ) Concurrent use of monoamine oxidase inhibitors (MAOIs) or use of MAOIs within the last 14 days. ( 4 )

6 ADVERSE REACTIONS The following serious adverse reactions are described, or described in greater detail, in other sections: Addiction, Abuse, and Misuse [see Warnings and Precautions (5.1) ] Life-Threatening Respiratory Depression [see Warnings and Precautions (5.2) ] Interaction with Benzodiazepine or Other CNS Depressants [see Warnings and Precautions (5.3) ] Neonatal Opioid Withdrawal Syndrome [see Warnings and Precautions (5.4) ] Opioid-Induced Hyperalgesia and Allodynia [see Warnings and Precautions (5.6) ] Serotonin Syndrome [see Warnings and Precautions (5.7) ] Adrenal Insufficiency [see Warnings and Precautions (5.9) ] Severe Hypotension [see Warnings and Precautions (5.10) ] Gastrointestinal Adverse Reactions [see Warnings and Precautions (5.12) ] Seizures [see Warnings and Precautions (5.13) ] Withdrawal [see Warnings and Precautions (5.14) ] The most common (≥10%) adverse reactions were nausea, constipation, dizziness, headache, and somnolence. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Collegium Pharmaceutical, Inc. at 1-855-331-5615 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trial 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 Clinical Studies with NUCYNTA ER in Patients with Chronic Pain due to Low Back Pain or Osteoarthritis The safety data described in Table 1 below are based on three pooled, randomized, double-blind, placebo-controlled, parallel group, 15-week studies of NUCYNTA ER (dosed 100 to 250 mg BID after a 50 mg BID starting dose) in patients with chronic pain due to low back pain (LBP) and osteoarthritis (OA). These trials included 980 NUCYNTA ER-treated patients and 993 placebo-treated patients. The mean age was 57 years old; 63% were female and 37% were male; 83% were White, 10% were Black, and 5% were Hispanic. The most common adverse reactions (reported by ≥10% in any NUCYNTA ER dose group) were: nausea, constipation, dizziness, headache, and somnolence. The most common reasons for discontinuation due to adverse reactions in eight Phase 2/3 pooled studies reported by ≥1% in any NUCYNTA ER dose group for NUCYNTA ER- and placebo-treated patients were nausea (4% vs. 1%), dizziness (3% vs. <1%), vomiting (3% vs. <1%), somnolence (2% vs. <1%), constipation (1% vs. <1%), headache (1% vs. <1%), and fatigue (1% vs. <1%), respectively. Table 1. Adverse Drug Reactions Reported by ≥ 1% of NUCYNTA ER-Treated Patients and Greater than Placebo- Treated Patients in Pooled Parallel-Group Trials MedDRA preferred terms. The trials included forced titration during the first week of dosing. NUCYNTA ER 50 to 250 mg BID NUCYNTA ER dosed between 100 and 250 mg BID after a starting dose of 50 mg BID (n=980) Placebo (n=993) Nausea 21% 7% Constipation 17% 7% Dizziness 17% 6% Headache 15% 13% Somnolence 12% 4% Fatigue 9% 4% Vomiting 8% 3% Dry mouth 7% 2% Hyperhidrosis 5% <1% Pruritus 5% 2% Insomnia 4% 2% Dyspepsia 3% 2% Lethargy 2% <1% Asthenia 2% <1% Anxiety 2% 1% Decreased appetite 2% <1% Vertigo 2% <1% Hot flush 2% <1% Disturbance in attention 1% <1% Tremor 1% <1% Chills 1% 0% Abnormal dreams 1% <1% Depression 1% <1% Vision blurred 1% <1% Erectile dysfunction 1% <1% Commonly-Observed Adverse Reactions in Clinical Studies with NUCYNTA ER in Patients with Neuropathic Pain Associated with Diabetic Peripheral Neuropathy The types of adverse reactions seen in the studies of patients with painful diabetic peripheral neuropathy (DPN) were similar to what was seen in the low back pain and osteoarthritis trials. The safety data described in Table 2 below are based on two pooled, randomized withdrawal, double-blind, placebo-controlled, 12-week studies of NUCYNTA ER (dosed 100 to 250 mg BID) in patients with neuropathic pain ass …

7 DRUG INTERACTIONS Table 3 includes clinically significant drug interactions with NUCYNTA ER. Table 3. Clinically Significant Drug Interactions with NUCYNTA ER Alcohol Clinical Impact: Concomitant use of alcohol with NUCYNTA ER can result in an increase of tapentadol plasma levels and potentially fatal overdose of tapentadol. Intervention: Instruct patients not to consume alcoholic beverages or use prescription or non- prescription products containing alcohol while on NUCYNTA ER therapy [see Warnings and Precautions (5.3) ] . Benzodiazepines and Other Central Nervous System (CNS) Depressants Clinical Impact: Due to additive pharmacologic effect, the concomitant use of benzodiazepines or other CNS depressants, including alcohol, can increase the risk of hypotension, respiratory depression, profound sedation, coma, and death [see Warnings and Precautions (5.3) ] . Intervention: Reserve concomitant prescribing of these drugs for use in patients for whom alternative treatment options are inadequate. Limit dosages and durations to the minimum required. Inform patients and caregivers of this potential interaction and educate them on the signs and symptoms of respiratory depression (including sedation). If concomitant use is warranted, consider recommending or prescribing an opioid overdose reversal agent [see Dosage and Administration (2.2) , Warnings and Precautions (5.1 , 5.2 , 5.3) ]. Examples: Benzodiazepines and other sedatives/hypnotics, anxiolytics, tranquilizers, muscle relaxants, general anesthetics, antipsychotics, gabapentinoids (gabapentin or pregabalin), other opioids, alcohol Serotonergic Drugs Clinical Impact: The concomitant use of opioids with other drugs that affect the serotonergic neurotransmitter system has resulted in serotonin syndrome [see Warnings and Precautions (5.7) ]. Intervention: If concomitant use is warranted, frequently evaluate the patient, particularly during treatment initiation and dose adjustment. Discontinue NUCYNTA ER if serotonin syndrome is suspected. Examples: Selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), triptans, 5-HT3 receptor antagonists, drugs that affect the serotonin neurotransmitter system (e.g., mirtazapine, trazodone, tramadol), certain muscle relaxants (i.e., cyclobenzaprine, metaxalone), monoamine oxidase (MAO) inhibitors (those intended to treat psychiatric disorders and also others, such as linezolid and intravenous methylene blue) Monoamine Oxidase Inhibitors (MAOIs) Clinical Impact: MAOI interactions with opioids may manifest as serotonin syndrome or opioid toxicity (e.g., respiratory depression, coma) [see Warnings and Precautions (5.2) ]. Intervention: Do not use NUCYNTA ER in patients taking MAOIs or within 14 days of stopping such treatment Examples: phenelzine, tranylcypromine, linezolid Mixed Agonist/Antagonist and Partial Agonist Opioid Analgesics Clinical Impact: May reduce the analgesic effect of NUCYNTA ER and/or precipitate withdrawal symptoms. Intervention: Avoid concomitant use. Examples: butorphanol, nalbuphine, pentazocine, buprenorphine Muscle Relaxants Clinical Impact: Tapentadol may enhance the neuromuscular blocking action of skeletal muscle relaxants and produce an increased degree of respiratory depression. Intervention: Because respiratory depression may be greater than otherwise expected, decrease the dosage of NUCYNTA ER and/or the muscle relaxant as necessary. Due to the risk of respiratory depression with concomitant use of skeletal muscle relaxants and opioids, consider recommending or prescribing an opioid overdose reversal agent [see Dosage and Administration (2.2) , Warnings and Precautions (5.2 , 5.3) ] Examples: cyclobenzaprine, metaxalone Diuretics Clinical Impact: Opioids can reduce the efficacy of diuretics by inducing the release of antidiuretic hormone. Intervention: Evaluate patients for signs of diminished diuresis and/or effects on blood pr …

8 USE IN SPECIFIC POPULATIONS Pregnancy : Based on animal data, may cause fetal harm. ( 8.1 ) Lactation: Not recommended. ( 8.2 ) Severe Hepatic or Renal Impairment: Use not recommended. ( 8.6 , 8.7 ) 8.1 Pregnancy Risk Summary Use of opioid analgesics for an extended period of time during pregnancy may cause neonatal opioid withdrawal syndrome [see Warnings and Precautions (5.4) ]. Available data with NUCYNTA ER are insufficient to inform a drug- associated risk for major birth defects and miscarriage or adverse maternal outcomes. In animal reproduction studies, embryofetal mortality and structural malformations were observed with subcutaneous administration of tapentadol during organogenesis to rabbits and delays in skeletal maturation were observed in rats at exposures equivalent to and less than the maximum recommended human dose (MRHD), respectively. When administered to pregnant rats during organogenesis and through lactation, increased pup mortality was noted following oral tapentadol exposures to doses equivalent to the MRHD [see Data ] . Based on animal data, advise pregnant women of the potential risk to a fetus. The 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 reaction. 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 Fetal/neonatal adverse reactions Use of opioid analgesics for an extended period of time during pregnancy for medical or nonmedical purposes can result in physical dependence in the neonate and neonatal opioid withdrawal syndrome shortly after birth. Neonatal opioid withdrawal syndrome presents as irritability, hyperactivity and abnormal sleep pattern, high pitched cry, tremor, vomiting, diarrhea, and failure to gain weight. The onset, duration, and severity of neonatal opioid withdrawal syndrome vary based on the specific opioid used, duration of use, timing and amount of last maternal use, and rate of elimination of the drug by the newborn. Observe newborns for symptoms of neonatal opioid withdrawal syndrome and manage accordingly [see Warnings and Precautions (5.4) ]. Labor or Delivery Opioids cross the placenta and may produce respiratory depression and psychophysiological effects in neonates. An opioid overdose reversal agent, such as naloxone or nalmefene must be available for reversal of opioid-induced respiratory depression in the neonate. NUCYNTA ER is not recommended for use in pregnant women during and immediately prior to labor, when use of shorter-acting analgesics or other analgesic techniques are more appropriate. Opioid analgesics, including NUCYNTA ER, can prolong labor through actions that temporarily reduce the strength, duration, and frequency of uterine contractions. However, this effect is not consistent and may be offset by an increased rate of cervical dilatation, which tends to shorten labor. Monitor neonates exposed to opioid analgesics during labor for signs of excess sedation and respiratory depression. Data Animal Data Tapentadol HCl was evaluated for teratogenic effects in pregnant rats and rabbits following intravenous and subcutaneous exposure during the period of embryofetal organogenesis. When tapentadol was administered twice daily by the subcutaneous route in rats at dose levels of 10, 20, or 40 mg/kg/day [producing up to 1.36 times the plasma exposure at the maximum recommended human dose (MRHD) of 500 mg/day for NUCYNTA ER based on an area under the time-curve (AUC) comparison], no teratogenic effects were observed. Evidence of embryofetal toxicity included transient delays in skeletal maturation (i.e., reduced ossification) at the 40 mg/kg/day dose which was associated with significant maternal toxicity. Administration of tapentadol HCl in rabbits at doses of 4, 10, or 24 mg/kg/day by s …

12.1 Mechanism of Action Tapentadol is a centrally-acting synthetic analgesic. The exact mechanism of action is unknown. Although the clinical relevance is unclear, preclinical studies have shown that tapentadol is a mu-opioid receptor (MOR) agonist and a norepinephrine reuptake inhibitor (NRI). Analgesia in animal models is derived from both of these properties.

11 DESCRIPTION NUCYNTA ER (tapentadol) is an opioid agonist, supplied in extended-release film-coated tablets for oral administration, containing 58.24, 116.48, 174.72, 232.96, and 291.20 mg of tapentadol hydrochloride in each tablet strength, corresponding to 50, 100, 150, 200, and 250 mg of tapentadol free-base, respectively. The chemical name is 3-[(1 R ,2 R )-3-(dimethylamino)-1-ethyl-2-methylpropyl]phenol monohydrochloride. The structural formula is: The molecular weight of tapentadol HCl is 257.80, and the molecular formula is C 14 H 23 NO∙HCl. The n-octanol: water partition coefficient log P value is 2.89. The pKa values are 9.36 and 10.45. In addition to the active ingredient tapentadol HCl, tablets also contain the following inactive ingredients: alpha-tocopherol (vitamin E), hypromellose, polyethylene glycol, and polyethylene oxide. The film coating is comprised of polyvinyl alcohol, polyethylene glycol, talc, titanium dioxide, and the colorant FD&C Blue #2 aluminum lake is used for 100, 150, 200, and 250 mg strengths; and additionally, yellow iron oxide is used in 150 mg tablets. Printing inks contain shellac glaze and propylene glycol for all strengths, and black iron oxide (50, 100, 150 and 200 mg tablets) or titanium dioxide (250 mg tablets). Chemical Structure

10 OVERDOSAGE Clinical Presentation Acute overdosage with tapentadol can be manifested by respiratory depression, somnolence progressing to stupor or coma, skeletal muscle flaccidity, cold and clammy skin, constricted pupils, and, in some cases pulmonary edema, bradycardia, hypotension, hypoglycemia, partial or complete airway obstruction, atypical snoring and death. Marked mydriasis rather than miosis may be seen with hypoxia in overdose situations [see Clinical Pharmacology (12.2) ] . Toxic leukoencephalopathy has been reported after opioid overdose and can present hours, days, or weeks after apparent recovery from the initial intoxication. Treatment of Overdose In case of overdose, priorities are the reestablishment of a patent and protected airway and institution of assisted or controlled ventilation, if needed. Employ other supportive measures (including oxygen, vasopressors) in the management of circulatory shock and pulmonary edema as indicated. Cardiac arrest or arrhythmias will require advanced life support measures. For clinically significant respiratory or circulatory depression secondary to tapentadol overdose, administer an opioid overdose reversal agent such as naloxone or nalmefene. Because the duration of reversal would be expected to be less than the duration of action of tapentadol in NUCYNTA ER, carefully monitor the patient until spontaneous respiration is reliably reestablished. NUCYNTA ER will continue to release tapentadol and add to the tapentadol load for 24 to 48 hours or longer following ingestion, necessitating prolonged monitoring. If the response to an opioid overdose reversal agent is suboptimal or only brief in nature, additional reversal agent should be given as directed in the product's prescribing information. In an individual physically dependent on opioids, administration of the recommended usual dosage of the opioid overdose reversal agent will precipitate an acute withdrawal syndrome. The severity of the withdrawal symptoms experienced will depend on the degree of physical dependence and the dose of the reversal agent administered. If a decision is made to treat serious respiratory depression in the physically dependent patient, administration of the reversal agent should be initiated with care and by titration with smaller than usual doses of the reversal agent.

16 HOW SUPPLIED/STORAGE AND HANDLING NUCYNTA ER tablets are available in the following strengths and packages: 50 mg extended-release tablets are white oblong-shaped with a black print "OMJ 50" on one side and are available in bottles of 60 with child-resistant closure (NDC 24510-058-60) and unit dose blister packs of 100 (10 blister strips of 10 tablets each), for hospital use only (NDC 24510-058-01). 100 mg extended-release tablets are light-blue oblong-shaped with a black print "OMJ 100" on one side and are available in bottles of 60 with child-resistant closure (NDC 24510-116-60) and unit dose blister packs of 100 (10 blister strips of 10 tablets each), for hospital use only (NDC 24510-116-01). 150 mg extended-release tablets are blue-green oblong-shaped with a black print "OMJ 150" on one side and are available in bottles of 60 with child-resistant closure (NDC 24510-174-60) and unit dose blister packs of 100 (10 blister strips of 10 tablets each), for hospital use only (NDC 24510-174-01). 200 mg extended-release tablets are blue oblong-shaped with a depression in the middle running lengthwise on each side and with a black print "OMJ 200" on one side, and are available in bottles of 60 with child- resistant closure (NDC 24510-232-60) and unit dose blister packs of 100 (10 blister strips of 10 tablets each), for hospital use only (NDC 24510-232-01). 250 mg extended-release tablets are dark blue oblong-shaped with a depression in the middle running lengthwise on each side and with a white print "OMJ 250" on one side, and are available in bottles of 60 with child-resistant closure (NDC 24510-291-60) and unit dose blister packs of 100 (10 blister strips of 10 tablets each), for hospital use only (NDC 24510-291-01). Storage and Handling Store at 20°C - 25°C (68°F - 77°F); excursions permitted to 15° C - 30°C (59° F - 86°F) [see USP Controlled Room Temperature]. Protect from moisture. Store NUCYNTA ER securely and dispose of properly.