Bupropion
Norepinephrine-dopamine reuptake inhibitor (NDRI) atypical antidepressant. Indications: MDD, seasonal affective disorder, smoking cessation (Zyban). No sexual dysfunction, minimally sedating.
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DETAILED OVERVIEW
What is Bupropion?
Bupropion is an atypical antidepressant developed by GlaxoSmithKline (Wellbutrin, FDA 1989). Its NDRI (norepinephrine-dopamine reuptake inhibitor) and nicotinic receptor antagonist mechanism distinguishes from SSRI/SNRI: no sexual dysfunction or weight gain, not sedating, supports smoking cessation (Zyban brand FDA 1997). FDA-approved indications: MDD, seasonal affective disorder (SAD), smoking cessation. Jorenby 1999 (NEJM PMID 10080847) trial showed 1-year abstinence 30.3% on bupropion+nicotine patch, vs 16.4% placebo. Hewett 2010 meta-analysis of 6 MDD trials demonstrated SSRI-comparable efficacy with better tolerability.
ATC code
N06AX12
Prescription
Prescription only (Rx)
Mechanism
NDRI + nicotinic receptor antagonist
Half-life
~21 h (hydroxybupropion metabolite 20-37 h)
Onset
1-2 weeks (motivation, focus), 4-6 weeks (full AD effect)
Anecdotal reports describe Bupropion as a versatile NDRI antidepressant with notable motivation- and drive-boosting effects via dopamine and norepinephrine enhancement. Community accounts note strong efficacy for low-motivation depression presentations, including ADHD-overlap cases. Its low DAT affinity suggests it acts more as a dopaminergic modulator via VMAT-2 than a direct reuptake blocker. Nicotinic receptor antagonism underlies its FDA-approved smoking-cessation indication (Zyban); ongoing research examines utility in cocaine, methamphetamine, and impulsive-behavior disorders. Bupropion can be paradoxically activating or overstimulating, with a narrow therapeutic window. Mechanistic notes: nitric oxide donors and PDE-5 inhibitors (Sildenafil, Tadalafil) may blunt antidepressant efficacy; methylene blue appears to potentiate it. Caution: seizure threshold lowering – contraindicated in eating disorders and seizure history.
⚠ Not clinical evidence – based on user accounts.
Data console
Lab data
Piper ME, Smith SS, Schlam TR, Fiore MC, Jorenby DE, Fraser D, Baker TB . A randomized placebo-controlled clinical trial of 5 smoking cessation pharmacotherapies.. Arch Gen Psychiatry.
Weihs KL, Settle EC Jr, Batey SR et al. . Bupropion versus paroxetine for the treatment of major depressive disorder. J Clin Psychiatry. 2000;61(3):196-202..
Cipriani A, Furukawa TA, Salanti G et al. . Comparative efficacy and acceptability of 21 antidepressant drugs for major depressive disorder. Lancet. 2018;391(10128):1357-1366..
Niemegeers P, Dumont GJ, Patteet L, Neels H, Sabbe BG . Bupropion for the treatment of seasonal affective disorder.. Expert Opin Drug Metab Toxicol.
Greenway FL, Fujioka K, Plodkowski RA et al. . Effects of naltrexone-bupropion on weight loss (COR-I trial). Lancet. 2010;376(9741):595-605..
Davidson J. . Bupropion and seizure risk: a systematic review. J Clin Psychiatry. 1989;50(7):256-61..
Safarinejad MR . The effects of the adjunctive bupropion on male sexual dysfunction induced by a selective serotonin reuptake inhibitor: a double-blind placebo-controlled and randomized study.. BJU Int.
Safety
Side effects, stop signs, contraindications
Side effects · 8
- BOXED WARNING: increased risk of suicidal thoughts and behavior in children, adolescents and young adults (<25 yrs) at treatment start or dose change; close monitoring required.
- Dose-dependent seizures: ~0.1% at standard dose (≤300 mg/day), ~0.4% at 450 mg/day, exponential above; the hallmark serious risk. Respect max dose (SR 400, XL 450 mg/day); do not crush tablets.
- Insomnia (15-20%), dry mouth (10-15%) and headache (~10%); to limit insomnia, take the last dose by early afternoon (around 5 pm).
- Agitation, anxiety, restlessness and tremor, especially in the first weeks; an activating, non-sedating profile with a narrow therapeutic window.
- Blood pressure elevation (dose-dependent NDRI effect); monitor BP at initiation, especially when combined with nicotine replacement or other sympathomimetics.
- Weight loss / reduced appetite (5-8%); weight-neutral or weight-reducing unlike SSRIs (often a benefit, but a concern in eating disorders).
- Neuropsychiatric events: may trigger mania/hypomania in bipolar patients (NDRI activation); rarely psychotic symptoms, hallucinations or paranoia, mainly at high doses.
- Hypersensitivity reactions: rash, urticaria, pruritus; rarely serum-sickness-like reaction or Stevens-Johnson syndrome; discontinue if rash persists or worsens.
Contraindications · 4
- Seizure disorder (epilepsy) history or known predisposition
- Eating disorders (bulimia, anorexia nervosa) – elevated seizure risk
- Acute alcohol or benzodiazepine withdrawal (seizure risk)
- Concurrent or within-14-days MAOi use (hypertensive crisis)
Related Pharmaceuticals
Same therapeutic category
Studies
Related research and clinical findings
A randomized placebo-controlled clinical trial of 5 smoking cessation pharmacotherapies.
Piper ME, Smith SS, Schlam TR, Fiore MC, Jorenby DE, Fraser D, Baker TB
Bupropion versus paroxetine for the treatment of major depressive disorder
Weihs KL, Settle EC Jr, Batey SR et al.
Comparative efficacy and acceptability of 21 antidepressant drugs for major depressive disorder
Cipriani A, Furukawa TA, Salanti G et al.
Bupropion for the treatment of seasonal affective disorder.
Niemegeers P, Dumont GJ, Patteet L, Neels H, Sabbe BG
Effects of naltrexone-bupropion on weight loss (COR-I trial)
Greenway FL, Fujioka K, Plodkowski RA et al.
Bupropion and seizure risk: a systematic review
Davidson J.
The effects of the adjunctive bupropion on male sexual dysfunction induced by a selective serotonin reuptake inhibitor: a double-blind placebo-controlled and randomized study.
Safarinejad MR
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The information here is for educational and scientific purposes only. Medication use requires medical consultation and a prescription. The indications, dose ranges, and side effects listed here do NOT replace the official Summary of Product Characteristics (SmPC) or consultation with a physician. Do not start or stop any medication on your own. In an emergency, call your local emergency number.