Not going to pretend I know much about pharmacology. However, it is certainly not a cure for methamphetamine addiction. if you meant a form of substitution therapy, which is what I assume you meant, then, yes you might be onto something. unfortunately, I don’t think stimulant substitution therapy is as simple as opioid substitution, because of the different pharmacology of stimulants. for some people, it may work brilliantly, but for others, a small dose of a stimulant could trigger stronger cravings for large doses of an illicit stimulant drug. i’ve heard something similar can happen with benzodiazepine substitution for alcohol dependence. that is for some, benzodiazepines cut the craving for alcohol and suppress withdrawals. for others, perhaps where a very strong aspect of psychological dependence exist, benzodiazepines can trigger alcohol relapse. some have suggested this is because they tickle the GABA receptors, acting as an appetiser to alcohol. Think of getting A whiff or even a taste of some amazing food when you are already starving.