What are Speed made of EXACTLY and USUALLY

[Davidbell]

you know these pills wich all have little cute logo that goes from Pepsi, Coca-Cola, Shell, On Star*, Tweety etc... They are Stimulant pills for sure. But SWIM wait before calling them Speed,which stand for any type of 'Amphetamine'.

The thing is, What type of Stimulant, or simply What do you really think are those stimulant pills usually made of ?

Piperazines ? (Don't think so but maybe?)
Methylphenidate? (Don't think so because Meth is much simpler-cheaper to produce and much more potent)
Cocaine ? (Don't think so because they are sold at much lower price than Cocaine would be)
Amphetamine (if so, what type: Sulfate, Base?)? (Don't think so because Meth is much simpler-cheaper to produce and much more potent)
Methamphetamine (if so, what type: Sulfate, HDL?)?
MDMA? (SWIM heard there is sometime, MDMA in your pill)