Closeup image of powdered amphetamine.

Source: amphetamines.com

Orange and black dextroamphetamine caplets. (pharmaceutical names: Dexedrine or Dextrostat)

Dextroamphetamine is a psychostimulant known to bring about wakefulness and focus in association with decreased fatigue and appetite. The tablet preparation of the salt d-amphetamine sulfate (pharmaceutical names: Dexedrine or Dextrostat) is available in 5mg and 10mg strengths in the United States.

Hi-res photo of a clump of Amphetamine base.

Amphetamine, the medical drug came first as the salt racemic-amphetamine sulfate (racemic-amphetamine contains both isomers in equal amounts).

Source: RTF