GTN

Medical abbreviation · Drug

GTN
Stands forGlyceryl trinitrate (nitroglycerin)
CategoriesMedical

GTN stands for Glyceryl trinitrate (nitroglycerin), a drug abbreviation.

British and international name for nitroglycerin, used on UK, Irish, Australian and European prescriptions and labels, most often as a sublingual spray for angina.

Example: GTN spray 400 micrograms, 1-2 puffs under the tongue for chest pain, repeat after 5 minutes.

Usage notes

Glyceryl trinitrate is the chemically descriptive name; nitroglycerin is the older US name. GTN ointment is also used in the UK to treat anal fissures, where it relaxes the internal sphincter, though it often causes headaches. US clinicians may not recognize GTN, so transfers from abroad are usually translated.

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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.