Ibuprofen as a FAAH Inhibitor

Ibuprofen as a FAAH Inhibitor

Ibuprofen distinguishes itself from other NSAIDs because it is also a FAAH inhibitor, it slows the breakdown of anandamide and related molecules.
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Nonsteroidal antiinflammatory drugs (NSAIDs) are one of the most common classes of painkillers, which includes aspirin, ibuprofen, celecoxib, and other pharmaceuticals. Their primary target is an enzyme called cyclooxygenase-2 (COX-2), which metabolizes many lipids (including endocannabinoids!) into a class of inflammatory molecules called prostaglandins. The side effects of NSAIDs are largely due to the inhibition of the related COX-1 enzyme, which can cause significant gastrointestinal problems. But ibuprofen distinguishes itself from other NSAIDs because it is also a FAAH inhibitor, meaning it slows the breakdown of anandamide and related molecules, including PEA and OEA. (These molecules are called fatty-acid ethanolamines.) A new paper by Italian chemists examines the molecular structure of ibuprofen, and explains how slight changes to ibuprofen’s structure can strengthen its ability to inhibit FAAH. Studying the so-called “structure-activity relationship” of existing drugs, as these scientists have done, aids the development of new pharmaceuticals.

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