1,3-Dimethylbutylamine (1,3-DMBA), or simply dimethylbutylamine (DMBA), is a stimulant drug structurally related to methylhexanamine (1,3-dimethylamylamine (1,3-DMAA)) where a butyl group replaces the amyl group. It is also known as AMP Citrate (4-amino-2-methylpentane citrate). The compound is an aliphatic amine. There are no known human safety studies on DMBA and its health effects are entirely unknown.