ISMN

Medical abbreviation · Drug

ISMN
Stands forIsosorbide mononitrate
CategoriesMedical

ISMN stands for Isosorbide mononitrate, a drug abbreviation.

Long-acting oral nitrate taken once or twice daily to prevent angina, the active metabolite of isosorbide dinitrate. It is not used for acute chest pain, which requires sublingual nitroglycerin.

Example: ISMN ER 30 mg every morning for stable angina.

Usage notes

Continuous nitrate exposure causes tolerance, so immediate-release ISMN is taken in asymmetric doses (for example 8 a.m. and 3 p.m.) to leave an overnight nitrate-free period, while ER versions are taken once in the morning. Headache is the most common side effect and often fades after the first weeks.

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Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.