See also the Warning section. Dry mouth, sore throat, nausea, vomiting, stomach/abdominal pain, flushing, headache, loss of appetite, constipation, trouble sleeping, increased sweating, strange taste in mouth, muscle/joint aches, dizziness, or blurred vision may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people do not have serious side effects. Tell your doctor immediately if any of these unlikely but serious side effects occur: fainting, chest pain, fast heartbeat, severe headache, uncontrolled movements (tremor), unusual weight loss or gain, ringing in the ears, mental/mood changes (e.g., agitation, anxiety, hallucinations, nervousness, confusion, restlessness). Tell your doctor immediately if any of these rare but very serious side effects occur: muscle pain/tenderness/weakness, change in the amount of urine. This drug may rarely cause seizures. Seek immediate medical attention if you have a seizure while taking bupropion. If you have a seizure while taking bupropion, you should not take this drug again. A severe allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a severe allergic reaction include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. An empty tablet shell may appear in your stool. This is harmless. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.