Gosh, yes, what's happened with other psychotropic drugs once they become trendy and bigpharma pushes them hard.
I don't think that there can be many medicinal drugs that don't have some side-effects or downsides, but boy does bigpharma go all out to hide them instead of being more open. Then we have exposés and that's lead to enormous suspicion and wariness over anything that seems new, leading to more reluctance by bigpharma to be open about things.
And the cannabis thing, scream. The problems in America where it's been legalised for pain relief, and companies sell modified/carefully selected variants of it that have far higher levels of THC, without warning patients taking it for pain relief that whilst small amounts don't kill pain and larger amounts do, even larger amounts leave you more sensitive to it. I read a heartbreaking article by an American psychiatrist about how in practical terms, as opposed to technical terms, it creates the effect of addiction, insofar as patients trying to kill pain simply take more and more as the pain gets worse and worse. Lovely profits for manufacturers, wholesalers, retailers, advertisers etc.
CBD is now available here and fashionable. I don't see anything advertised as being a particular strength or containing a specific amount. I don't buy it but I'd like to bet that any details like that are in rather small print.
But suggestions that if you legalise anything like that you should put the equivalent of alcohol ABV labels don't go down well in this country.
I've been horrified by what isn't told to people about existing psychotropic meds. I was shocked when I realised that my night-blindness was due to medications I was taking and that doctors in various specialties, including ophthalmologist, psychiatrist, neurologist, GP etc. didn't register that they can impair vitamin A absorption even though if you rummage you can find they impair the functioning of the pancreas. When I later asked my neurologist whether that could also be a factor in my ataxia, via problems with vitamin E absorption, his eyes lit up, not having previously made the connection. Yet the relevant meds are ones that he prescribes for epilepsy.
So whilst I think there's enormous potential for creating a range of new psychotropic meds and other meds from psychedelic plants & substances, I think, sadly, we'll get the same sort of problems with a wide range of other meds. Super-duper wonderful cure-all, push hard, oops, problems, deny, deny, oh dear, admit them, never mind, another super-duper cure-all is ready to market.
I think it happens far more with psychotropic medication than other meds, not least because it's easy to write off what mental health service users say than what physical health service users say.
Which is a pity, because if there's a big enough scandal over a med that can cause problems, it can get abandoned even where, if used appropriately and prudently, it would be very useful.