Wellbutrin (bupropion) can raise blood pressure in some people, but the increase is usually small and manageable. Clinical studies show that most people taking standard doses see a modest rise of 1 to 5 mmHg in systolic blood pressure. However, larger increases are possible, especially at higher doses or in people with existing hypertension. Understanding how Wellbutrin affects blood pressure helps you stay safe while getting the benefits of treatment.
Does Wellbutrin Raise Blood Pressure?
Yes, Wellbutrin can raise blood pressure. This is a known effect of the medication. Bupropion, the active ingredient, increases levels of norepinephrine and dopamine in the brain. Norepinephrine also acts on blood vessels, causing them to tighten. This tightening increases the pressure against vessel walls.
The effect is dose‑dependent. Higher doses, especially above 300 mg per day, are more likely to cause a meaningful increase. For most people, the change is mild and does not require stopping the medication. But for people with pre‑existing high blood pressure, the effect can be more pronounced and may need monitoring or adjustment.
How Much Does Wellbutrin Raise Blood Pressure?
Clinical trials and observational studies report average increases of 1 to 5 mmHg in systolic blood pressure and 1 to 3 mmHg in diastolic blood pressure. These numbers come from people taking standard doses of 150 mg to 300 mg daily. Some individuals experience no change at all.
In people with uncontrolled hypertension, larger increases have been seen. A small percentage of patients may see a rise of 10 mmHg or more. If blood pressure becomes elevated above 140/90 mmHg, your doctor may lower the dose, add a blood pressure medication, or switch to a different antidepressant.
It is important to note that these averages come from clinical trials. Individual responses vary. Regular blood pressure checks give you the real‑world answer for your body.
Who Is at Risk for Blood Pressure Increases?
People with existing hypertension are at the highest risk. If your blood pressure is not well controlled before starting Wellbutrin, the medication can push it higher. Anyone with a history of heart disease, stroke, or arrhythmia should also be cautious.
Other risk factors include:
- Taking high doses of Wellbutrin (above 300 mg per day)
- Using stimulants such as amphetamines, ADHD medications, or decongestants
- Drinking excessive caffeine
- Taking MAO inhibitors (this combination can cause a hypertensive crisis)
- Being older than 65
People with no risk factors and normal blood pressure are unlikely to have a clinically significant rise. Still, monitoring is recommended for everyone during the first few weeks of treatment.
How Does Wellbutrin Cause a Rise in Blood Pressure?
Bupropion blocks the reuptake of norepinephrine and dopamine. This means more of these chemicals remain available in the spaces between nerve cells. Norepinephrine is a neurotransmitter that also acts as a hormone. When it binds to receptors on blood vessels, those vessels constrict.
Constricted blood vessels create more resistance for the heart to pump against. This increases blood pressure. The effect is similar to what happens when you feel stress or fear – your body releases norepinephrine, and your blood pressure rises temporarily. With Wellbutrin, the effect is sustained throughout the day because the medication keeps norepinephrine levels elevated.
Unlike many other antidepressants, Wellbutrin does not significantly affect serotonin. This is why it has fewer sexual side effects but comes with this unique blood pressure risk.
How to Monitor Blood Pressure While Taking Wellbutrin
If you are prescribed Wellbutrin, your doctor should check your blood pressure before starting treatment and then at follow‑up visits. For most people, a home blood pressure monitor provides useful data between appointments.
Measure your blood pressure at the same time each day, before taking your medication. Sit quietly for five minutes first, with your feet flat on the floor and your arm supported at heart level. Record the readings and share them with your doctor.
What to watch for:
- Systolic consistently above 130 mmHg
- Diastolic consistently above 80 mmHg
- A sudden jump of more than 10 mmHg compared to baseline
These numbers are general guidelines. Your doctor may set different targets based on your health history. Do not stop Wellbutrin suddenly without medical guidance, as withdrawal symptoms can occur.
When to See a Doctor
Contact your doctor if you experience symptoms of high blood pressure while taking Wellbutrin. These symptoms are often silent, but some people notice:
- Headaches, especially at the back of the head
- Shortness of breath
- Nosebleeds
- Blurred vision
- Chest pain
Seek emergency care if your blood pressure reading is above 180/120 mmHg, or if you have chest pain, severe headache, or difficulty speaking. A hypertensive crisis is rare with Wellbutrin alone, but possible when combined with other medications or high doses.
Your doctor may lower the dose, recommend a beta‑blocker or other antihypertensive, or switch you to a different antidepressant. Bupropion is not the only option. SSRIs like sertraline or escitalopram have little to no effect on blood pressure and may be appropriate alternatives.
Can Wellbutrin Cause Low Blood Pressure?
Low blood pressure (hypotension) is not a typical effect of bupropion. The medication’s mechanism of increasing norepinephrine usually raises pressure, not lowers it. If you experience dizziness or fainting while taking Wellbutrin, it is more likely due to other causes – dehydration, other medications, or a different underlying condition. Report any such symptoms to your doctor.
Frequently Asked Questions
Does Wellbutrin cause permanent high blood pressure?
No, the blood pressure increase is usually reversible. Once you stop the medication or lower the dose, blood pressure typically returns to baseline.
Can I take Wellbutrin if I already have high blood pressure?
Yes, but only if your blood pressure is well controlled. Your doctor will monitor you closely and may start you on a lower dose or add a blood pressure medication.
How long after starting Wellbutrin does blood pressure increase?
The increase can begin within the first few days of treatment. Most changes are seen within the first two to four weeks when medication levels are stable.
Does caffeine affect Wellbutrin’s effect on blood pressure?
Yes, caffeine can add to the blood pressure raising effect. Both bupropion and caffeine stimulate the nervous system, so high caffeine intake may increase your risk.
