Patient-Friendly Explanation

Bupropion is a medication that affects brain chemicals involved in appetite and cravings. When combined with naltrexone (as the brand Contrave), it helps reduce hunger and control eating urges as part of a medical weight management programme.

Clinical Definition

Bupropion is a norepinephrine-dopamine reuptake inhibitor (NDRI) that increases activity in hypothalamic pro-opiomelanocortin (POMC) neurons, which regulate appetite and energy expenditure. In combination with the opioid antagonist naltrexone, it forms an FDA-approved anti-obesity pharmacotherapy that targets both the homeostatic and hedonic pathways of food intake.

Why It Matters

Knowing how individual components of weight loss medications work helps patients make informed decisions about combination therapies and understand what to expect from treatment.