Select options Buy Amphetamine powder online €180,00 – €4 400,00 Rated 5.00 out of 5 Amphetamine also known as speed and pep. Speed is a powerful stimulant substance of phenylethylamine. Amphetamine is considered one of the reference members of its class. Typical effects include stimulation, increased focus, increased libido, appetite suppression, and euphoria. It is usually taken orally, but can also be injected, injected or administered rectally.