OA is Osteoarthritis
https://www.google.com/search?q=]ino...e+side+effects
[Are there safety concerns?
It is not known if inosine is safe or what the potential side effects might be.
Do not use inosine if:
You are pregnant or breast-feeding.
You have gout.]
http://www.medicinenet.com/inosine-p...s-vitamins.htm