Bethanol-25 Tablet is used to treat urinary retention and improve exercise ability. It is prescribed for regular use, with a fixed dose and duration. Common side effects include headache, nausea, vomiting, diarrhea, arrhythmia, flushing, sweating, dizziness, and sleepiness. It is advised not to drive or engage in concentration-requiring activities until the side effects are understood. Before treatment, inform your doctor if you are on any other medications or if you are pregnant.