Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Xylopropamine (Perhedrin, Esanin), also known as 3,4-dimethylamphetamine, is a stimulant drug of the phenethylamine and amphetamine chemical classes which was developed in the 1950s as an appetite suppressant. It acts as a stimulant, likely via inducing the release of serotonin, norepinephrine, and dopamine. Xylopropamine was briefly sold as the sulfate salt, but it was not widely marketed. Other related amphetamine derivatives such as 2,4-dimethylamphetamine were also investigated for the same purpose, however these drugs had negative side effects such as high blood pressure and were not very successful, mainly due to the introduction of alternative drugs like phentermine which had similar efficacy but fewer side effects.