Description: Its main component is isosorbide dinitrate. Isosorbide mononitrate is in a group of drugs called nitrates. It dilates (widens) blood vessels, making it easier for blood to flow through them and easier for the heart to pump. Isosorbide mononitrate is used to prevent angina attacks (chest pain).

Pharmacological effects: Isosorbide Mononitrate belongs to a group of medicines called nitrate vasodilators. These work by relaxing the blood vessels of the heart, reducing the strain on the heart making it easier to pump blood.

Indications: Isosorbide Mononitrate tablets may be used to relieve the pain and frequency of angina attacks and help control certain types of heart failure.

Precautions: Do not take Isosorbide Mononitrate tablets if you are allergic (hypersensitive) to isosorbide mononitrate, isosorbide dinitrate or any of the ingredients in the tablet. An allergic reaction may include a rash, itching or difficulty breathing, have any condition where you blood pressure is very low or your blood is not circulating properly (such as shock), have angina that is caused by  an enlarged heart muscle, have suffered from a head injury or bleeding in the brain, have severe anaemia. Check with your doctor or pharmacist before taking Isosorbide Mononitrate tablets if you have glaucoma (increased pressure in the eye, have severe kidney or liver problems, have an underactive thyroid gland, are undernourished as a result of a poor diet, are suffering from hypothermia, have an undiagnosed pituitary tumour (brain tumour). Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, includin medicines obtained without a prescription. Especially: noradrenaline (norepinephrine) to treat high blood pressure or heart attack, acetylcholine – used in some operations, medicines to treat high blood pressure such as ACE inhibitors, beta blockers, angiotensin-II, receptor agonists, clonidine,  diazoxide, diuretics (water tablets),  methyldopa, moxonidine, histamine to treat allergic reactions, sildenafil , tadalafil and vardenafil, used to treat male erection dysfunction, should not be taken if taking nitrate preparations such as Isosorbide Mononitrate tablets because a severe and possibly dangerous fall in blood pressure can occur. This would result in collapse, unconsciousness and could be fatal. If you are pregnant, planning to become pregnant or breast feeding speak to a doctor before taking Isosorbide Mononitrate tablets. Driving and using machines Isosorbide mononitrate may make you feel dizzy, make sure you are not affecte before you drive or operate machinary Sugar intolerance. If you have been told that you have an intolerance to some sugars, contact your doctor before taking this medicine, as it contains lactose. Taking Isosorbide Mononitrate tablets with alcohol. You are advised not to drink alcohol with this medicine as it may increase the blood pressure lowering affect of the tablets. If you see another doctor or go into hospital, let them know what medicines you are  taking.

Adverse reaction: Like all medicines, Isosorbide Mononitrate tablets can cause side effects, although not everybody. Contact your doctor at once if you experience  symptoms of an allergic reaction skin rash, swelling of the skin of the extremities or face, swelling of lips, tongue, or the mucous membranes in mouth, throat, or airways, resulting in shortness of breath or difficulty to swallow.