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 (bupropion) is an antidepressant that works on chemicals in the brain. Wellbutrin is indicated for depression. Wellbutrin is usually taken in the morning, either with or without food. Side effects of Wellbutrin include headache, insomnia, nausea, dizziness, appetite changes and tremor or shaking.