Bisonol 5mg Tablet is a beta-blocker medication used to treat high blood pressure, angina, irregular heart rhythms, and overactive thyroid symptoms. It can be taken alone or with other medications, and its dose and frequency depend on the condition. It may take several weeks to fully benefit, and it may be necessary for life. Side effects include fatigue, headache, slow heart rate, dizziness, and nausea. It may not be suitable for those with liver problems, slow heart rate, severe circulation problems, heart failure, or low blood pressure. Pregnant or breastfeeding mothers should consult their doctor before taking this medication.