Have you tried inosine at all? Is the Uric acid increase a concern in people prone to gout?
Yes, I have tried it and it is quite potent as a mood lifter and also as a heart protector. The increase in uric acid requires doses of 2g+ daily and most benefits are seen from even <500mg doses. So, it should be pretty safe even for those people.
Inosine : a naturally occurring cardiotonic agent. - PubMed - NCBI
Positive inotropic response to inosine in the in situ canine heart. - PubMed - NCBI
https://www.hindawi.com/journals/isrn/2012/326809/