What is "methylhexanamine"

n. (context organic compound English) 1,3-dimethylamylamine, a simple aliphatic amine used as a nasal decongestant and vasoconstrictor.

Methylhexanamine (trade names Forthane, Geranamine) or methylhexamine, commonly known as 1,3-dimethylamylamine (1,3-DMAA) or simply dimethylamylamine (DMAA), is an indirect sympathomimetic drug invented and developed by Eli Lilly and Company and marketed as an inhaled nasal decongestant from 1944 until it was voluntarily withdrawn from the market in 1983.

Since 2006 methylhexanamine has been sold extensively under many names as a stimulant or energy-boosting dietary supplement under the claim that it is similar to certain compounds found in geraniums, but its safety has been questioned as a number of adverse events and at least five deaths have been associated with methylhexanamine-containing supplements. It is banned by many sports authorities and governmental agencies.