Note that methamphetamine is rarely if ever prescribed — the (non-meth)amphetamines commonly prescribed for ADHD have different safety profiles as well. (And, of course, you’re supposed to take them orally, which makes them less recreational due to slower absorption.)
Methamphetamine hydrochloride IS methamphetamine. I don't know how that can be stated more clearly.
Edit: in addition they are very much the same. They cross the b/b barrier at different speeds (add mentioned) and are metabolized at different rates due to the additional methyl group but otherwise their pharmacological actions are very much the same. The differences in effects are almost entirely covered by the 2 potentially mentioned rates differences. To argue otherwise is to ascribe produced sociological effects which we create by now we treat the drugs to their inherent pharmacology which is just plain wrong.
https://en.m.wikipedia.org/wiki/Paracetamol_poisoning#Pathop...
I asked him if he would ever prescribe me Desoxyn and he said he would never do that. I asked him if he would prescribe it to be if I was diagnosed with a terminal illness - he said he’d consider it.
Food for thought.