Unfortunately everything (especially pharmaceutical) is for profit, so something that actually prevented aging would cost an ungodly amount and take us into some next level capitalism as people would remain rich and powerful for waaaayyy too long. Distribution of something like this would only be acceptable if it was earned by being a great person overall who contributes to society or through some form of periodic community voting. Like hey, thanks for always being a kind person and for volunteering to help school children cross the street…here is some enough anti aging stuff to give you another year of life.