A systematic review of its use for this purpose in adult women found there was insufficient evidence of benefit and further research is needed.Methenamine acts as an over-the-counter antiperspirant due to the astringent property of formaldehyde. Histological stains
Methenamine silver stains are used for staining in histology, including the following types:

Grocotts methenamine silver stain, used widely as a screen for fungal organisms. Jones stain, a methenamine silver-Periodic acid-Schiff that stains for basement membrane, availing to view the "spiked" Glomerular basement membrane associated with membranous glomerulonephritis. Solid fuel
Together with 1,3,5-trioxane, hexamethylenetetramine is a component of hexamine fuel tablets used by campers, hobbyists, the military and relief organizations for heating camping food or military rations. It burns smokelessly, has a high energy density of 30.0 megajoules per kilogram (MJ/kg), does not liquify while burning, and leaves no ashes, although its fumes are toxic. Standardized 0.149 g tablets of methenamine (hexamine) are used by fire-protection laboratories as a clean and reproducible fire source to test the flammability of carpets and rugs. Food additive
Hexamethylene tetramine or hexamine is also used as a food additive as a preservative (INS number 239). It is approved for usage for this purpose in the EU, where it is listed under E number E239, however it is not approved in the USA, Russia, Australia, or New Zealand. Reagent in organic chemistry
Hexamethylenetetramine is a versatile reagent in organic synthesis.
References
External links
"Tagraxofusp". Drug Information Portal. U.S. National Library of Medicine. "Tagraxofusp-erzs". NCI Drug Dictionary. National Cancer Institute. "Tagraxofusp-erzs". National Cancer Institute. 22 January 2019.