Isomex (Isosorbide Mononitrate)

Isosorbide Mononitrate is converted in the body to nitric oxide, a potent vasodilator. Nitric oxide activates soluble guanylate cyclase, increasing cyclic GMP levels in vascular smooth muscle. This cascade relaxes veins and arteries, lowering cardiac preload and afterload, which reduces myocardial oxygen demand and improves oxygen delivery to heart tissue.

The appropriate dose of Isomex is determined by the prescribing clinician based on the individual’s medical condition, response to therapy, and any concomitant medications. Dosage may be started low and titrated as needed, but specific strength and frequency should always follow the prescriber’s written instructions.

Safety data for isosorbide mononitrate in pregnancy and lactation are limited, and the product is classified as having an unknown pregnancy category. It should be used only if the potential benefit justifies any possible risk to the fetus or infant, and the decision must be made by a qualified healthcare professional.

To request Isomex, visit the product page on gnhindia.com and submit an enquiry with the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide. After submission, the sales team will verify trade or institutional credentials, then provide pricing, availability, shipping details (including any cold‑chain requirements) and assist with import documentation.

The primary alternative to isosorbide mononitrate is nitroglycerin, another organic nitrate. Both provide vasodilation, but isosorbide mononitrate has a longer half‑life, allowing once‑daily dosing, whereas nitroglycerin often requires multiple daily doses or sublingual use for acute relief. Clinicians may choose based on dosing convenience, patient tolerance, and specific clinical scenarios.

Isomex tablets should be stored at ambient temperature, preferably below 25 °C. Keep the product in its original container, protect it from moisture, heat and direct sunlight. Do not store in the bathroom or near a kitchen sink, and keep out of reach of children.

Isomex is taken orally, usually with a glass of water. It can be taken with or without food, but patients should follow the prescriber’s instructions regarding timing relative to meals. Swallow the tablet whole; do not crush, chew, or split it unless specifically advised by a healthcare professional.

The most serious adverse reactions include severe hypotension that can lead to fainting, methemoglobinemia (a condition where blood cannot carry oxygen effectively), and allergic reactions such as anaphylaxis. Patients should seek immediate medical attention if they experience sudden dizziness, fainting, shortness of breath, or signs of a severe allergic response.

Isomex is contraindicated in patients with severe hypotension, recent myocardial infarction, or those taking phosphodiesterase‑5 inhibitors (e.g., sildenafil) due to the risk of dangerous blood‑pressure drops. Caution is also advised for individuals with significant renal impairment, known hypersensitivity to organic nitrates, or those with a history of severe headache disorders.