Like all medicines, bupropion can cause side effects, although not everyone gets them. Often side effects improve as your body gets used to the new medicine.
Increased risk of seizures
Bupropion can increase the risk of seizures. This happens in about 1 in 1,000 people who take bupropion. Although this is rare, it can be serious, especially if it occurs when you are driving or operating machinery. The risk of a seizure is increased if you:
- take more than 2 tablets per day
- have had a head injury
- drink a lot of alcohol
- are taking medicines that can cause fits, such as antipsychotics, antidepressants, anti-malarials, tramadol, theophylline, corticosteroids and some antihistamines
- have diabetes and are being treated with insulin or other medicines.
Other side effects
Side effects |
What should I do? |
- Dry mouth
- Sore throat
- Feeling sick (nausea)
- Loss of appetite – not wanting to eat because food tastes different
- Headache
|
- These are quite common when you first start taking bupropion and usually go away with time.
- Tell your doctor if you are finding them troublesome.
|
- Sleep problems, difficulty falling asleep
|
- These are common when you first start taking bupropion but go away with time.
- Avoid taking your dose at bedtime.
- If you are taking a dose 2 times a day, take the second dose at least 8 hours after your morning dose.
|
- Feeling sleepy, drowsy or tired during the day
- Poor concentration
|
- Be careful when driving or using tools until you know how this medicine affects you.
- You will have a greater risk of falls and injuries, especially if you are an older adult. Tell your doctor if you are concerned.
- Do not drink alcohol.
|
- Signs of a severe allergic reaction, such skin rash, itching, swelling of your lips, face and mouth, or difficulty breathing
|
- Stop using bupropion.
- Tell your doctor immediately or phone Healthline 0800 611 116.
|
Did you know that you can report a side effect to a medicine to CARM (Centre for Adverse Reactions Monitoring)? Report a side effect to a product(external link) |
Note: In September 2020, Medsafe highlighted a possible risk of psoriasis worsening with the use of bupropion. If you have psoriasis and notice it getting worse, or if you develop psoriasis when starting bupropion, you or your doctor can read more about medicines and side effects and reporting a reaction you think might be a side effect.