Call your doctor at once if you have a serious side effect such as: 1  headache with chest pain and severe dizziness, fast or pounding heartbeats, shortness of breath, fainting; 2  diarrhea that is watery or bloody;  fever, swollen glands, body aches, flu symptoms, new or worsening cough;
The maximum daily doses is also slightly different as both Wellbutrin XL and Wellbutrin have a maximum daily dose of 450 mg per day, whereas the maximum dosage for Wellbutrin SR is only 400 mg per day.
A: Wellbutrin XL (bupropion XL) is an antidepressant that works on chemicals in the brain. Wellbutrin XL is indicated for depression. Side effects of Wellbutrin XL include headache, insomnia, nausea, dizziness, appetite changes and tremor or shaking.: Wellbutrin (bupropion) is a dopamine-reuptake inhibitor antidepressant which is used for the treatment of major depressive disorder. There are long-acting forms of bupropion which are used for smoking cessation and to treat seasonal affective disorder.