There were old threads like
http://forums.phoenixrising.me/index.php?threads/inosine-reaction.18758/ , but it does seem like it could use an update in 2017.
It's one of the more intriguing substances (owing to its power), but a lot of literature seems to characterize it as immunosuppressive, which seems contrary to a lot of anecdotes. I think the copout explanation was that it had "normalizing" effects, but I failed to understand (effects on NK cells dominate?). One of the doctors must know how it works.
To me only the uric acid effect was familiar (brewer's yeast and sardines).