Oxaceprol (N-Acetyl-L-hydroxyproline) is an established therapeutic agent for osteoarthritis.

Oxaceprol, an established therapeutic agent for osteoarthritis, had no effect on macrophage prostaglandin E2 release in vitro and inhibited carrageenan paw oedema at high doses (18-150 mg/kg p.o.).?In the same dose range, oxaceprol was comparable to indomethacin (3 mg/kg p.o.) as an inhibitor of yeast hyperalgaesia and at 6-50 mg/kg/day p.o. had a mild, variable inhibitory effect on cotton pellet granuloma formation[1]