Bupropion and Naltrexone and bupropion interaction
Bupropion and Naltrexone and bupropion: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Bupropion (BUPROPION HCl ER (XL)) label · effective 2026-02-04
Current use of other bupropion products (4, 5.3)
The following conditions can also increase the risk of seizure: concomitant use of other medications that lower the seizure threshold (e.g., other bupropion products, antipsychotics, tricyclic antidepressants, theophylline, and systemic corticosteroids), metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, and hypoxia), or use of…
Additional data accumulated for bupropion immediate-release suggests that the estimated seizure incidence increases almost tenfold between 450 and 600 mg/day.
…hydrochloride extended-release tablets (XL), concurrent administration of bupropion hydrochloride extended-release tablets (XL) and agents that lower the seizure threshold (e.g., other bupropion products, antipsychotics, antidepressants, theophylline, or systemic corticosteroids) should be undertaken only with extreme caution [see Warnings and Precautions (5.3)] .
Potential for Other Drugs to Affect Bupropion Hydrochloride Extended-Release Tablets (XL) Bupropion is primarily metabolized to hydroxybupropion by CYP2B6.
From the Naltrexone and bupropion (Contrave Extended-Release) label · effective 2025-11-10
…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…
Use of other bupropion-containing products ( 4 )
…oral diabetic medications (sulfonylureas and meglitinides) that may cause hypoglycemia concomitant administration of medications that may lower the seizure threshold, including other bupropion products, antipsychotics, tricyclic antidepressants, theophylline, systemic steroids Recommendations for Reducing the Risk of Seizure: Clinical experience with bupropion suggests…
Concomitant use of other bupropion-containing products is contraindicated [see Contraindications (4) and Warnings and Precautions (5.3) ].
In clinical practice with other bupropion-containing products, hypertension, in some cases severe and requiring acute treatment, has been reported.
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.