[nik_s]

You can order these drugs in bulk from chemical vendors for research purposes (i.e. non-human use). Chemscene, to name just one, sells Rapamacyn at 1440 USD for 5g.

EDIT: I clearly don't recommend you buying this and taking it by the way. You're never quite sure about the purity nor about how to dose this effectively as a layperson without access to a lab. It's also possibly completely illegal, depending on your local laws.

[LorenPechtel]

Yeah. By the time you're looking at stuff in the milligram range it becomes quite problematic to ensure consistent doses. I would be confident that I could get an *average* of 1mg/day but I would not be confident I could ensure every day was in .9mg to 1.1mg.