Questions about their effects and duration are allowed.
Questions about how to use these drugs recreationally, safely or otherwise, are not permitted.
Questions about availability in very (emphasis on “very”) general terms are permitted, as long as the question does not ask for specific details on how to obtain them. Questions that are too detailed or questions that might be construed as asking for how to obtain illegal items are not permitted. In other words, “is drug X commonly available in big cities?” is allowed, but “is drug X available in my town?” is not.
How the question is asked matters. If the question is more of a scientific curiosity type of question (i.e. what are the effects of this drugs, etc) then we generally allow that. If it is clear from the question that the poster intends to engage in an illegal act, then the question would not be allowed. In other words, “what does drug X do to the human body” is generally allowed, where “I wanna take X, what’s it gonna do to me?” is not.
Since the overall tone of your question indicates a desire to commit an illegal act, your thread would probably not be allowed.
If you want to know if a specific post would be allowed, feel free to PM me, or any of the moderators of the forum you wish to post in, and we can take a look at it and tell you whether it would be allowed or not.