If inosine is in fact the real topic of interest, do a forum search. There was quite a lot of discussion several years ago on the topic. The main problem with most inosine supplements is that inosine oxidizes the moment it hits air. I believe the B-12 solution Charlie’s group used had the inosine pre-dissolved in it by the manufacturer. To the best of my recollection, it was not a home brew. I believe Charlie or someone else mentioned a quality inosine supplement from Japan that came in foil-sealed bubble strips, but it was pricey. The typical inosine supplements you find on the market with powder or tablets in a bottle are pretty much worthless because it’s oxidized long before you consume it.