Bupropion and nicotine replacement therapy are the established alternatives to varenicline for smoking cessation. Both have substantial evidence; both fit specific patient profiles; both are often combined with each other or with varenicline for enhanced effect.
- Class
- Smoking cessation pharmacotherapy
- Mechanism
- Bupropion (Zyban): NDRI + nicotinic antagonism — reduces craving and withdrawal. NRT: replaces nicotine in non-pulse form (patch, gum, lozenge, inhaler, nasal spray) — separates nicotine delivery from smoking.
- Typical dose
- Bupropion start 1 week before quit date. NRT dose by smoking intensity.
- FDA indications
- Smoking cessation
- Key adverse effects
- Bupropion: insomnia, dry mouth, seizure (dose-dependent — avoid in eating disorders, seizure history). NRT: skin irritation (patch), mouth/throat irritation (gum/lozenge), GI.
- Representative agents
- Bupropion SR 150 mg BID. NRT: patch 7-21 mg/24h, gum 2-4 mg PRN, lozenge 2-4 mg PRN, inhaler, nasal spray.
Combination strategies: bupropion + NRT, NRT patch + PRN gum/lozenge (sustained + breakthrough). Multiple formulations of NRT allow tailoring to triggers (lozenge for cravings, patch for steady-state). NRT is OTC.
Bupropion as Zyban is the same drug as Wellbutrin for depression — same mechanism (NDRI plus nicotinic antagonism), same dose ranges, different FDA-labeled indication. The dual antidepressant and smoking-cessation activity is uniquely useful for the patient with both depression and tobacco use. One prescription addresses both indications. Start 1 week before quit date; titrate to 150 mg BID. Avoid in seizure history, eating disorders. Standard bupropion side effects apply.
Bupropion and nicotine replacement aid smoking cessation through different mechanisms — and combining them, or pairing them with varenicline, increases success.
Mechanism note: Bupropion and NRT work through distinct mechanisms; combination strategies — combination NRT, or pairing with bupropion or varenicline — raise cessation success in heavier or relapse-prone smokers.
NRT — nicotine replacement therapy — comes in multiple formulations addressing different trigger patterns. Patches provide steady-state nicotine through the day. Gum, lozenges, inhalers, and nasal spray provide PRN nicotine for breakthrough cravings. Patches plus PRN gum or lozenge is a common combination — steady background plus on-demand response. NRT is OTC in most markets. Dose by smoking intensity (heavy smokers need higher patch doses and more PRN coverage).
Combination strategies are common and evidence-supported. Bupropion plus NRT outperforms either alone. NRT patch plus PRN lozenge outperforms patch alone. Some clinicians combine varenicline plus NRT for difficult quitters. The combination toolkit allows substantial individualization.
Counseling and behavioral support amplify pharmacologic effects substantially. Tobacco quit-lines, individual counseling, and group programs all add to medication effects. Combined pharmacotherapy plus behavioral support produces the highest quit rates.
- Cost
- Bupropion SR/XL generic ~$10-30/month (same as Wellbutrin). NRT patches OTC ~$30-50/month; gum/lozenge similar.
- Generic status
- Bupropion generic. NRT OTC.
- Formulary typical
- Bupropion Tier 1. NRT often covered by insurance with prescription even when OTC available.
- Access friction
- OTC barrier minimal. Some patients prefer prescription for insurance coverage.
Prescriber tip: For NRT, write prescription even though OTC — insurance coverage often makes it cheaper for the patient. Combinations (patch + gum) substantially improve outcomes.
For the patient with depression and smoking, bupropion. For the patient who tolerates nicotine replacement and prefers self-management, NRT. For the most aggressive cessation attempt in a motivated patient, combinations. Match the intervention to the patient.