Protol AM Tablet PR contains two medicines both of which help to control high blood pressure and heart rate It is also used for heart related chest pain abnormal heart rhythms and chronic long term heart failure You can take Protol AM Tablet PR at any time of day with or without food but it is best to take it at the same time each day Keep taking it for as long as advised by your doctor Even if you feel well do not stop this medicine on your own because high blood pressure often has no symptoms If you stop taking it your condition may get worse Keeping Active with regular exercise reducing your weight and eating a healthy diet will also help control your blood pressure Follow your doctor s advice while taking this medicine It may cause side effects like headache ankle swelling slow heart rate and Nausea It may also cause dizziness so do not drive or do anything that requires mental focus until you know how this medicine affects you This might raise the level of potassium in the blood hence avoid potassium rich food or supplements You may be asked for regular monitoring of blood pressure kidney function and electrolytes level while on the treatment