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Glyceryl Monostearate

Medically reviewed by Last updated on Oct 19, 2023.

Excipient (pharmacologically inactive substance)

What is it?

Glyceryl monostearate, C21H42O4, also known as monostearin, is a mixture of variable proportions of glyceryl monostearate, glyceryl monopalmitate , and glyceryl esters of fatty acids present in commercial stearic acid. In industry, it can be used as an emulsifier. It also occurs naturally in the body as a fat metabolite, and is present in foods with high fat content. In pharmaceuticals, it is used as a protective coating for hygroscopic powders, and a solidifier and control release agent.[1]

List of medications using Glyceryl Monostearate


  1. FDA: CFR - Code of Federal Regulations Title 21. Accessed February 15, 2015 at

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.