Propylhexedrine (also called Hexahydromethamphetamine)is the active chemical in benzedrex otc nasal inhalers and also a strong ass stimulant.Theres 250mh in each inhaler and it about a 5th as potent as d-amphetamine so its equal to a adderall 50mg and only cost about 5 bux, but the inhalers contian some nasty shit like lavender and menthol so eating the cotton out of the inhalers is unpleasent and helps discourage abuse. I know its not a amphetamine but its chemically similair and stronger than ephedrine(some tweakers i know prefer it over adderall). And i have a couple questions 1.) I found a extraction guide online to take the drug outta the inhalers and make pure powder(fake meth recipe lol) but it requires 36% hydrochloric acid and i dont have any on hand so is there anything that could be used to substitute it? 2.)has anyone here done the drug before or done a extraction and if so how was it?