Yes, High Blood Pressure is a Known Side Effect of Wellbutrin (Bupropion)
Wellbutrin (bupropion) can cause elevated blood pressure and hypertension, and blood pressure must be assessed before starting treatment and monitored regularly during therapy. 1
Key Clinical Facts
The FDA drug label explicitly states that "Treatment with Wellbutrin XL can result in elevated blood pressure and hypertension" 1. This is not a rare or theoretical concern—it's a documented adverse effect that requires active monitoring.
Magnitude of Blood Pressure Effects
Clinical trial data demonstrates measurable increases:
- Mean systolic blood pressure increased by 1.3 mmHg (statistically significant, p=0.013) 1
- Mean diastolic blood pressure increased by 0.8 mmHg 1
- In seasonal affective disorder trials, 2% of bupropion-treated patients (11/537) developed hypertension versus 0% in placebo group 1
- Two patients discontinued bupropion specifically due to developing hypertension 1
A 2024 meta-analysis confirmed these findings, showing bupropion (alone or combined with naltrexone) significantly increases both systolic BP (WMD: 1.34 mmHg) and diastolic BP (WMD: 0.93 mmHg) 2. The effect is dose-dependent, with greater increases at doses >360 mg and during the first 26 weeks of treatment 2.
Critical Clinical Implications
Contraindications and Warnings
Bupropion is contraindicated in patients with uncontrolled hypertension 3. This is particularly important for the naltrexone/bupropion ER combination used for weight management, where uncontrolled hypertension is an absolute contraindication 3.
When Combined with Other Agents
The hypertension risk increases substantially when bupropion is combined with:
- MAO inhibitors or drugs that increase dopaminergic/noradrenergic activity 1
- Nicotine replacement therapy (NRT): In smoking cessation trials, 6.1% of patients on bupropion + NTS developed treatment-emergent hypertension versus 2.5% on bupropion alone 1. Three patients (1.2%) discontinued due to hypertension with the combination 1
Special Populations at Higher Risk
Patients with pre-existing cardiovascular disease require particular caution:
- In a trial of patients with stable congestive heart failure, bupropion caused exacerbation of pre-existing hypertension in 2 subjects, leading to treatment discontinuation 1
- The 2025 AHA/ACC hypertension guidelines identify prescription drugs (including bupropion) as contributors to resistant hypertension that should be reviewed and potentially replaced 4
Monitoring Requirements
Mandatory blood pressure monitoring protocol:
- Baseline assessment before initiating bupropion 1
- Regular monitoring throughout treatment 3
- More frequent monitoring when combined with nicotine replacement 1
- Heart rate monitoring is also required, as slight elevations occur 3
Clinical Decision-Making for Specific Indications
For Depression with Hypertension
While bupropion can increase blood pressure, it may still be used in patients with controlled hypertension under close monitoring 5. A 2008 study in patients with mild untreated hypertension showed only minor effects, though the reduction in systolic BP was less with bupropion 300 mg than placebo 6.
For Weight Management with Hypertension
Avoid naltrexone/bupropion ER in favor of alternatives 7. The 2016 AACE guidelines explicitly state: "Naltrexone ER/bupropion ER should be avoided if other weight-loss medications can be used because weight loss assisted by naltrexone ER/bupropion ER cannot be expected to reduce blood pressure" 7. Preferred alternatives include orlistat, lorcaserin, phentermine/topiramate ER, or liraglutide 7.
For Smoking Cessation
Bupropion remains an effective option but requires blood pressure monitoring, particularly when combined with nicotine replacement 8. The cardiovascular effects must be weighed against the substantial benefits of smoking cessation 8.
Mechanism
The hypertensive effect is mediated through bupropion's dopamine/norepinephrine reuptake inhibition, which increases sympathetic nervous system activity 9. This sympathomimetic action can cause positive inotropic effects and catecholamine release 10.
Bottom Line
Bupropion definitively causes blood pressure elevation in a dose-dependent manner. This requires pre-treatment assessment, ongoing monitoring, and is contraindicated in uncontrolled hypertension. When treating patients with existing hypertension or cardiovascular disease, alternative medications should be strongly considered, particularly for weight management indications where safer options exist.