Naltrexone Hydrochloride And Bupropion Hydrochloride

Generic Name: naltrexone hydrochloride and bupropion hydrochloride

Over-the-Counter (OTC)

Brand Names:

Contrave Extended-release

11 DESCRIPTION CONTRAVE extended-release tablets contain naltrexone hydrochloride (HCl) and bupropion HCl. Naltrexone HCl, USP, an opioid antagonist, is a synthetic congener of oxymorphone with no opioid agonist properties. Naltrexone differs in structure from oxymorphone in that the methyl group on the nitrogen atom is replaced by a cyclopropylmethyl group. Naltrexone HCl is also related to the potent opioid antagonist, naloxone, or n-allylnoroxymorphone.

Overview

11 DESCRIPTION CONTRAVE extended-release tablets contain naltrexone hydrochloride (HCl) and bupropion HCl. Naltrexone HCl, USP, an opioid antagonist, is a synthetic congener of oxymorphone with no opioid agonist properties. Naltrexone differs in structure from oxymorphone in that the methyl group on the nitrogen atom is replaced by a cyclopropylmethyl group. Naltrexone HCl is also related to the potent opioid antagonist, naloxone, or n-allylnoroxymorphone.

Uses

1 INDICATIONS AND USAGE CONTRAVE is indicated in combination with a reduced-calorie diet and increased physical activity to reduce excess body weight and maintain weight reduction long term in adults with obesity or overweight in the presence of at least one weight-related comorbid condition. CONTRAVE is a combination of naltrexone, an opioid antagonist, and bupropion, an aminoketone antidepressant, indicated in combination with a reduced-calorie diet and increased physical activity to reduce excess body weight and maintain weight reduction long term in adults with obesity or overweight in the presence of at least one weight-related comorbid condition. ( 1 ) Limitations of Use: The effect of CONTRAVE on cardiovascular morbidity and mortality has not been established.

Dosage

2 DOSAGE AND ADMINISTRATION CONTRAVE dose escalation schedule ( 2.1 ): Morning Dose Evening Dose Week 1 1 tablet None Week 2 1 tablet 1 tablet Week 3 2 tablets 1 tablet Week 4 – Onward 2 tablets 2 tablets 2.1 Recommended Dosage Initiate and escalate the dosage of CONTRAVE according to the schedule in Table 1: Table 1. Dosage Initiation and Escalation Schedule for CONTRAVE Morning Dose Evening Dose Week 1 1 tablet None Week 2 1 tablet 1 tablet Week 3 2 tablets 1 tablet Week 4 – Onward 2 tablets 2 tablets A total daily dosage of 32 mg of naltrexone hydrochloride (HCl) and 360 mg bupropion HCl (two CONTRAVE 8 mg/90 mg tablets twice daily) is reached at the start of Week 4. CONTRAVE should be taken by mouth in the morning and in the evening. The tablets should not be cut, chewed, or crushed.

Side Effects

6 ADVERSE REACTIONS The following adverse reactions are discussed in other sections of the labeling: Suicidal Behavior and Ideation [see Boxed Warning , Warnings and Precautions (5.1) ] Neuropsychiatric Adverse Events [see Warnings and Precautions (5.2) ] Seizures [see Contraindications (4) , Warnings and Precautions (5.3) ] Increase in Blood Pressure and Heart Rate [see Warnings and Precautions (5.5) ] Allergic Reactions [see Warnings and Precautions (5.6) ] Angle-Closure Glaucoma [see Warnings and Precautions (5.9) ] Most common adverse reactions (greater than or equal to 5%): nausea, constipation, headache, vomiting, dizziness, insomnia, dry mouth and diarrhea.

Interactions

7 DRUG INTERACTIONS MAOIs: Increased risk of hypertensive reactions can occur when used concomitantly. ( 7.1 ) Drugs Metabolized by CYP2D6: Bupropion inhibits CYP2D6 and can increase concentrations of antidepressants, (e.g., selective serotonin reuptake inhibitors and many tricyclics), antipsychotics (e.g., haloperidol, risperidone and thioridazine), beta-blockers (e.g., metoprolol) and Type 1C antiarrhythmics (e.g., propafenone and flecainide). Consider dose reduction when using with CONTRAVE. ( 7.3 ) Digoxin: May decrease plasma digoxin levels. Monitor digoxin levels. ( 7.3 ) Concomitant Treatment with CYP2B6 Inhibitors (e.g., ticlopidine or clopidogrel) can increase bupropion exposure. Do not exceed one tablet twice daily when taken with CYP2B6 inhibitors.

Warnings

WARNING: SUICIDAL THOUGHTS AND BEHAVIORS 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 for major depressive disorder and other psychiatric disorders. ( 5.1 ) Monitor for worsening and emergence of suicidal thoughts and behaviors. ( 5.1 ) CONTRAVE is not approved for use in pediatric patients. 5 WARNINGS AND PRECAUTIONS Suicidal Behavior and Ideation: Monitor for depression or suicidal thoughts. Discontinue CONTRAVE if symptoms develop. ( 5.1 ) Neuropsychiatric Adverse Events During Smoking Cessation: Postmarketing reports of serious or clinically significant neuropsychiatric adverse events have included changes in mood (including depression and mania), psychosis, hallucinations, paranoia, delusions, homicidal ideation, aggression, hostility, agitation, anxiety, and panic, as well as suicidal ideation, suicide attempt, and completed suicide. Observe patients taking CONTRAVE for the occurrence of such symptoms and instruct them to discontinue CONTRAVE and contact a healthcare provider if they experience such adverse events. 4 CONTRAINDICATIONS CONTRAVE is contraindicated in Uncontrolled hypertension [see Warnings and Precautions (5.5) ] Seizure disorder or a history of seizures [see Warnings and Precautions (5.3) ] Use of other bupropion-containing products (including, but not limited to, WELLBUTRIN, WELLBUTRIN SR, WELLBUTRIN XL, APLENZIN and ZYBAN) Bulimia or anorexia nervosa, which increase the risk for seizure [se...

Pregnancy

8.1 Pregnancy Risk Summary Weight loss offers no benefit to a pregnant patient and may cause fetal harm. When a pregnancy is recognized, advise the pregnant patient of the risk to the fetus, and discontinue CONTRAVE ( see Clinical Considerations ). Available pharmacovigilance data and data from clinical trials with the individual components of CONTRAVE use in pregnant patients have not demonstrated a drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes.

Storage

Storage Store at 25°C (77°F); excursions permitted to 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature].

Frequently Asked Questions

What is Naltrexone Hydrochloride And Bupropion Hydrochloride used for?

1 INDICATIONS AND USAGE CONTRAVE is indicated in combination with a reduced-calorie diet and increased physical activity to reduce excess body weight and maintain weight reduction long term in adults with obesity or overweight in the presence of at least one weight-related comorbid condition. CONTRAVE is a combination of naltrexone, an opioid antagonist, and bupropion, an aminoketone antidepressant, indicated in combination with a reduced-calorie diet and increased physical activity to reduce excess body weight and maintain weight reduction long term in adults with obesity or overweight in the presence of at least one weight-related comorbid condition. ( 1 ) Limitations of Use: The effect of CONTRAVE on cardiovascular morbidity and mortality has not been established.

What are the side effects of Naltrexone Hydrochloride And Bupropion Hydrochloride?

6 ADVERSE REACTIONS The following adverse reactions are discussed in other sections of the labeling: Suicidal Behavior and Ideation [see Boxed Warning , Warnings and Precautions (5.1) ] Neuropsychiatric Adverse Events [see Warnings and Precautions (5.2) ] Seizures [see Contraindications (4) , Warnings and Precautions (5.3) ] Increase in Blood Pressure and Heart Rate [see Warnings and Precautions (5.5) ] Allergic Reactions [see Warnings and Precautions (5.6) ] Angle-Closure Glaucoma [see Warnings and Precautions (5.9) ] Most common adverse reactions (greater than or equal to 5%): nausea, constipation, headache, vomiting, dizziness, insomnia, dry mouth and diarrhea.

Can I take Naltrexone Hydrochloride And Bupropion Hydrochloride during pregnancy?

8.1 Pregnancy Risk Summary Weight loss offers no benefit to a pregnant patient and may cause fetal harm. When a pregnancy is recognized, advise the pregnant patient of the risk to the fetus, and discontinue CONTRAVE ( see Clinical Considerations ). Available pharmacovigilance data and data from clinical trials with the individual components of CONTRAVE use in pregnant patients have not demonstrated a drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes.

What are the important warnings for Naltrexone Hydrochloride And Bupropion Hydrochloride?

WARNING: SUICIDAL THOUGHTS AND BEHAVIORS 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 for major depressive disorder and other psychiatric disorders. ( 5.1 ) Monitor for worsening and emergence of suicidal thoughts and behaviors. ( 5.1 ) CONTRAVE is not approved for use in pediatric patients. 5 WARNINGS AND PRECAUTIONS Suicidal Behavior and Ideation: Monitor for depression or suicidal thoughts. Discontinue CONTRAVE if symptoms develop. ( 5.1 ) Neuropsychiatric Adverse Events During Smoking Cessation: Postmarketing reports of serious or clinically significant neuropsychiatric adverse events have included changes in mood (including depression and mania), psychosis, hallucinations, paranoia, delusions, homicidal ideation, aggression, hostility, agitation, anxiety, and panic, as well as suicidal ideation, suicide attempt, and completed suicide. Observe patients taking CONTRAVE for the occurrence of such symptoms and instruct them to discontinue CONTRAVE and contact a healthcare provider if they experience such adverse events. 4 CONTRAINDICATIONS CONTRAVE is contraindicated in Uncontrolled hypertension [see Warnings and Precautions (5.5) ] Seizure disorder or a history of seizures [see Warnings and Precautions (5.3) ] Use of other bupropion-containing products (including, but not limited to, WELLBUTRIN, WELLBUTRIN SR, WELLBUTRIN XL, APLENZIN and ZYBAN) Bulimia or anorexia nervosa, which increase the risk for seizure [se...

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Medical Disclaimer

This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.