There are in my city, where drugs are condoned for own use, and many drugs sold in smartshops, they sell stuff like Salvia Divinorum, Magic Shrooms (truffels, underground shrooms, fresh "paddo's" can't be purchased anymore after a bunch of drug tourists, of whe have a lot as we are known as th? drug capitol in the World, Amsterdam, Holland, died and killed going mad from tripping balls, however, Truffles are just the same as Shrooms, both contain psysolicine and psylicocibine, only you have to eat at least 10 gr. of it while dried Paddo's you are good with 4 gr. (high dose!) so, it's the same thing), they sell even Ayahuasca, used to sell GHB (liquid x), which you still can under the counter if you are a trusted customer, and other stuff.
Now, they sell both, all HERBAL drugs, the point being: they sell recovery pills for each specific drug: Heroine, Coke, Amp's,... They also sell Happy Caps, Herbal Amp's, they work amazing as they contain ephedrine - you don't get the same feel good feeling as with amp's (not releasing as much dopamines), but they do release a bunch of Noradrenaline, meaning you will be full of energy, you can't get drunk no matter how much you drink, you are wide awake, can't sleep, and they work long, so they are pretty much like Amp's...
Those are good substitutes!
Me, I'm trying to quit Oxynorm (European Oxycodone Instant for sublingual use, kicks in fast and major euphoric, nodding off, often better than Heroin itself (twice and half times more potent than Morphine btw), Opium (Smartshop) and Heroin (nr. 4 and 3, fent free lab tested high quality gear, as we have for 7 euro test labs for any drug to make sure that you have clean drugs, hence the high quality drugs, Coke on average globally is between 20 to 40%, in Amsterdam 75 to 86%, GC/MS tested).
I'm also a Cocaine addict, however, the use of the Smartshop it's recovery pills for Coke and Heroin, my Serotonines and Dopamines are quite okay still, tho I'm a long time addict, now quitting Opioids, also the ones from the NL RC shops like legal silkroad, selling u-47700 and the next generations, N-Ethyl-Hexedrone (Hexen), O-DSMT, Butyr-Fentanyl, Miauw, and much more, and I'm substituting with Red Vein and Green Vein Maeng Da, which give me euphoria, nodding off, the Opioid experience but all herbal! Much better than Methadone, it's a miracle drug!
Point being, tho I combo it with Lyrica (which gives an surprising amazing synergy with Kratom, you can't imagine!), that you can find healing herbal stuff for restoring dopamine, serotonine,... And herbal substitutes for semi-chemical or fully chemical drugs! And they work like crazy, so well!
Now the problem is, those things are probably illegal in your countries, so I don't know if any online Smartshop would sell this to you... Neither the RC shops... (tho Hexen is fucking shit and not at all like good Coke, it's like cut up Coke: no euphoria that's smooth with energy yet a slight high but relaxed not jittery not as fiendish and this warm tingling sensation in your body making you the most euphoric you can not even begin to imagine our Coke, but Hexen is the opposite - jittery, heart beating irregular, feeling nervous, no euphoria, very fiendish, just like poor quality Coke...!), the Opioid RC's tho are quite okay, not great, but not bad either...
Try to find out how to get this stuff, search an online smartshop, look up the ingredients and try to find them somewhere if you can... You can also buy for example ephedrine, weed, coca plants and seeds and all professional grow gear (tent's, lights, water supply etc...) - also shroom-kits ready to grow many shrooms in just two weeks (B+ Cubensis, very strong shrooms) in the Growshops! Growing your own ephedrine or recovery plants is a cheap way of harvesting lots of gear!
Anyway, hope you are something with this info!
anyway, my two cents: