Monoket (20 mg, 40 mg)

The generic name of Monoket is isosorbide mononitrate. This drug is indicated for the prevention of the chest pain in patients with coronary artery disease (heart disease). The medicine belongs to a class of medicines called as nitrates. It works by widening and relaxing the blood vessels so that the flow of the blood in the heart is made easier.


This drug is an organic nitrate and a vasodilator affecting both arteries and veins. The chemical formula is C6H9NO6 and the molar weight is 191.14 g/mol. This medication is available in the form of 20 mg and 10 mg tablets. The following inactive ingredients are present in this drug: starch, aluminium stearate, talc, lactose, colloidal silicon dioxide, microcrystalline cellulose and starch.


This medicine is used for the treatment and prevention of angina pectoris caused due to coronary artery disease.

How to Use

This medicine should be taken orally as instructed by the doctor generally two times in a day. Each day, the first dose should be taken at the time when you wake up, and then the second dose should be taken after 7 hours. It is necessary to take the drug at the same time every day. Do not alter the dosage timing until the doctor approves of it. To get the maximum benefit from it, take this drug regularly.

Side Effects

Dizziness, lightheadedness, flushing, nausea and headache may occur as your body adapts to this medicine. Headache often shows that this drug is working. You may take the pain reliever to treat headaches as recommended by your doctor. Get up in slow motion while rising from a lying or sitting position to reduce the signs of lightheadedness and dizziness. Inform your doctor if you observe any serious side effects such as: fast/pounding/irregular heartbeat, fainting, skin rashes, swollen tongue or throat or face or lips, bradycardia, edema, hypertension, back pain, neck pain, muscle cramps, vomiting, dry mouth, anorexia, tremor, vertigo, insomnia, anxiety, depression, nightmares, asthma, dyspnea, impaired concentration, thirst, pallor, hypotension, palpitations, tachycardia, sweating, myocardial infarction, apoplexy, decreased weight, arrhythmias, severe dizziness, itching and trouble breathing.


Before taking this medicine, inform your doctor if you are hypersensitive to monoket or its inactive ingredients. The inactive ingredients present in this medicine may cause unnecessary allergic reactions. This medicine may cause dizziness. Do not use machines or drive while using this medicine. Avoid alcoholic drinks. Before undergoing surgery, let your dentist or doctor know about all the products you are using. Older people may be extra sensitive to the side effects of this medicine, particularly lightheadedness and headache which could elevate the danger of falling. Do not use this medicine if you are a patient suffering from low blood pressure.

Pregnancy and Monoket

During pregnancy period, this drug ought to be used only if urgently required. Talk about the advantages and risks with your physician. It is uncertain whether this drug can pass into breast milk or not. Before breast-feeding it is better to talk to your doctor.