1,3-Dimethylbutylamine (1,3-DMBA, dimethylbutylamine, DMBA, 4-amino-2-methylpentane, or AMP), is a stimulant drug structurally related to methylhexanamine where a butyl group replaces the pentyl group. The compound is an aliphatic amine.

The hydrochloride and citrate salts of DMBA has been identified as unapproved ingredients in some over-the-counter dietary supplements, in which it is used in an apparent attempt to circumvent bans on methylhexanamine. The U.S. Food and Drug Administration (FDA) considers any dietary supplement containing DMBA to be "adulterated". Despite the FDA's opposition, DMBA continues to be sold in the US.

There are no known human safety studies on DMBA and its health effects are entirely unknown.

DMBA is not an agonist of the rodent or human trace amine-associated receptor 1 (TAAR1).

Doping in sports The substance is listed in doping group S6B, by WADA. One Norwegian football player has tested above the limit. However, in 2026 media told about investigation and conclusionhttps://www.nrk.no/sport/lufta-fra-granulatet-i-lsk-hallen-er-arsaken-til-positive-dopingprover-1.17824409. NRK.no. Retrieved 2026-04-12 that indicates that the substance came from the court that this player (and her team) played upon.https://www.vg.no/sport/i/1M46JB/nrk-skal-ha-funnet-spor-av-ulovlige-stoffer-i-aatte-dopingtester-i-toppserien-i-fotball. VG.no. Retrieved 2025-11-26

See also List of drugs banned by the World Anti-Doping Agency 1,4-Dimethylamylamine Heptaminol Iproheptine Isometheptene Methylhexanamine Octodrine Oenethyl Tuaminoheptane

References