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 is the generic or chemical name of the drug and Budeprion and Wellbutrin are brand names. Drugs can have both a generic name and a brand name. The FDA released a statement that the brand named medication; Budeprion XL 300 mg is not therapeutically equivalent to the brand named medication Wellbutrin XL 300 mg.This means that these two versions of bupropion XL 300 mg do not work the same when given to patients.he FDA does studies to make sure that all the different brands and generic formulations are the same. The FDA did the studies on the dose of bupropion XL 150 mg and concluded that all the manufacturers were making equivalent medications.