What is the difference between UK and USA speed?

[piddleton]

I'm starting to get really confused about all the different types of amphetamine that are currently available on the black market.

From what I can gather speed bought on the black market in the USA is called methamphetamine, a very potent and highly addictive form of amphetamine which is worse than heroine, presumably, or at least some people swear by it, whereas speed bought by their transatlantic counterparts, the British public, is identical to amphetamine, in terms of its chemical structure and effects? Is that correct?


Now finally is adderell an amphetamine? Or does it contain other groups which alters its functionality.

It is all a bit mind boggling!!!