anyone experienced recreationa drugs? or any kind of drug?

hello guys!! I'm just wondering if anybody of you guys have any experienced taking or smoking drugs... any kind of drugs (recreational drugs... anything) because my cousin took salvia that he purchased at this extraordinarily particular online store which I have unfortunately failed to link you to for some inexorable reason, and I'm wondering if there is another way to cure of this aside from rehab..

and also, can you guys share me your experiences as well and how you cope up with it? changes, effects, etc. this is for my homework research by the way. thank you very much!