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.
Wellbutrin XL (Bupropion HCL XL) Wellbutrin, also known by the trade name bupropion, is an antidepressant medication. The XL version is an extended-release formula and is usually taken once daily. This prescription is often used to treat seasonal affective disorder, a form of depression occurring during the fall and winter months. It is also a standard treatment for major depression in adults.