The present invention includes a composition and method of producing aspirin in situ, the method comprising: identifying a subject in need of aspirin or aspirin-like compounds; and providing the subject with a composition comprising: a source of methyl salicylate, an acetyl donor, and L-Arginine, wherein the composition is effective to produce aspirin-triggered resolvins in the subject without the deleterious effect of the aspirin or aspirin-like compounds in the stomach.