Medication guide
Bupropion (Wellbutrin): uses, side effects, and what to expect
Medically reviewed by Dr. Iman Yunis, DNP, PMHNP-BC · Last reviewed October 26, 2026
A plain-language guide to an antidepressant that works differently from SSRIs.
New patients typically seen within 2–3 days
- ✓ Plain-language guide
- ✓ Reviewed by a psychiatric NP
- ✓ Not a substitute for medical advice
The short answer
Bupropion (Wellbutrin) is an antidepressant that works differently from SSRIs and is approved for depression, seasonal depression, and help with quitting smoking. It is less likely to cause sexual side effects or weight gain, but it is not used in people with seizure disorders or eating disorders. Talk with your prescriber before starting or stopping it.
Safety first
Before you read
Uses
What bupropion is used for
Bupropion is an antidepressant that is not an SSRI. It is used to treat:
- Depression
- Seasonal affective disorder (prevention of fall and winter depression)
- Smoking cessation (under a different brand name)
Because it works differently, it is sometimes chosen when SSRIs caused side effects such as sexual problems or fatigue, or added to another antidepressant. Your prescriber will decide what fits you.
What to expect
How it works and how long it takes
Bupropion affects norepinephrine and dopamine, brain chemicals involved in energy, motivation, and mood. It comes in several forms taken once or more a day.
It takes time. The full benefit may take 4 weeks or longer.
Side effects
Common side effects
These are often mild and may ease over the first few weeks. Tell your prescriber if they bother you or do not go away.
- Dry mouth
- Trouble sleeping, especially if taken late in the day
- Headache
- Nausea or lower appetite
- Feeling anxious or jittery
- Sweating, tremor, or ringing in the ears
When to call
Serious side effects: call your prescriber right away
- Seizures
- New or worsening depression, anxiety, agitation, or thoughts of self-harm
- Confusion or hallucinations
- Fast or irregular heartbeat
- Unusually high energy or racing thoughts
For signs of a severe allergic reaction, such as swelling of the face or throat or trouble breathing, call 911.
Cautions
Interactions and who should be careful
- Seizure risk: bupropion is usually avoided in people with a seizure disorder or an eating disorder such as anorexia or bulimia
- Tell your prescriber if you recently stopped heavy drinking or stopped sedatives or seizure medications suddenly, as this raises seizure risk
- Do not take with MAO inhibitors, or within two weeks of stopping one
- Tell your prescriber about high blood pressure, head injury, or liver, kidney, or heart disease
- Do not take two products that contain bupropion at the same time
Pregnancy and breastfeeding
If you are pregnant, planning pregnancy, or breastfeeding
Tell your prescriber if you are pregnant, planning pregnancy, or breastfeeding. Untreated depression also carries risks, so the decision is made together with your prescriber and your OB or midwife. Learn about our women’s mental health care.
Stopping
Stopping bupropion safely
Do not stop bupropion without talking with your prescriber. They may lower the dose gradually and will help you plan next steps.
Not working?
When a medication is not helping enough
If bupropion is not helping, is causing side effects you cannot tolerate, or has stopped working, a thorough review can help. Options may include adjusting the dose, switching medications, adding therapy, or GeneSight® testing to help guide choices.
Dr. Yunis offers medication reviews by video across Washington, and new patients are typically seen within 2–3 days.
FAQ
Common questions about bupropion
Does Wellbutrin cause sexual side effects?
Sexual side effects are less commonly reported with bupropion than with SSRIs, which is one reason it may be chosen. Talk with your prescriber about your priorities.
Who should not take bupropion?
It is usually avoided in people with seizure disorders or eating disorders, and caution is needed after stopping alcohol or sedatives suddenly. Your prescriber will review your history.
How long does bupropion take to work?
The full benefit may take 4 weeks or longer.
Can bupropion help with seasonal depression?
Yes. One form of bupropion is approved to help prevent seasonal affective disorder episodes in fall and winter.
Sources
Where this information comes from
This guide summarizes publicly available drug information from MedlinePlus (U.S. National Library of Medicine) and PeaceHealth. It is general education, not medical advice, and does not cover every use, side effect, or interaction. Always follow the guidance of your own prescriber and pharmacist.
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