Not Medical Advice: Pill imprint WPI 839 has been identified as Bupropion hydrochloride extended-release (SR) 150 mg.
Bupropion is used to treat depression and to prevent depression in patients with seasonal affective disorder (SAD), which is sometimes called winter depression. It is also used as part of a support program to help people stop smoking.
Bupropion is sold under different brand names. If you are already taking medicine for depression or to help you stop smoking, discuss this with your doctor before taking bupropion. It is very important that you receive only one prescription at a time for bupropion. This medicine is available only with your doctor's prescription.
US Brand Names: