Nebilong H (12.5/5 mg) Tablet is a combination of Hydrochlorothiazide and Nebivolol. This medicine is used for the treatment of hypertension (high blood pressure). Due to the action of this medicine, you may experience frequent urination. Drink plenty of fluids while taking this medicine to overcome muscle weakness, dry mouth, and extreme thirst. Nebilong H (12.5/5 mg) Tablet may cause dizziness, therefore avoid driving vehicles and operating machines. If any of these side effects do not resolve with time or get worse, consult your doctor immediately. Do not stop taking this medicine suddenly as it raises your blood pressure, thereby increasing the risk of heart attack and stroke. Nebilong H (12.5/5 mg) Tablet should be used with caution if you have liver disease, kidney disease, heart disease and altered potassium or magnesium levels. To make sure Nebilong H (12.5/5 mg) Tablet is safe for you, share your entire medical and medication history with your doctor.