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.
Bupropion, or Wellbutrin, is a norepinephrine-dopamine reuptake inhibitor (NDRI) antidepressant and a smoking cessation aid. Find out more about its uses. Bupropion, or Wellbutrin, is a norepinephrine-dopamine reuptake inhibitor (NDRI) antidepressant and a smoking cessation aid.