Buxon XL-150 Tablet 10's is used to treat depression. Besides this, it is also used to help people stop smoking. It contains Bupropion which works by increasing the levels of serotonin responsible for improving mood. In some cases, this medicine may cause side effects such as nausea, headache, dizziness, vomiting, difficulty sleeping, fever, constipation, and sweating. Inform the doctor if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions.