[URL unfurl="true"]https://wiki.dmt-nexus.me/Psychedelic_Compounds_Chemical_and_Physical_Properties[/URL]

This is a list of common psychedelics and some of their physical and chemical properties, which includes solvent lists for many entries.

Endlessness also posted them here Psychedelic alkaloids chemical and physical properties (Solubility, xlogp, pka, mp and bp....) - Advanced/Enhanced chemistry - Welcome to the DMT-Nexus

What types of drugs are you looking for info on?  Merck index would be a good starting point.  The entries are often pretty sparse when it comes to solvents, but it does have some info on opiates and common pharmaceuticals, including how soluble they are in water or organic solvents.

-Treehouse