1-Monomyristin, extracted from Serenoa repens, inhibits the hydrolysis of 2-oleoylglycerol (IC50=32 μM)and fatty acid amide hydrolase (FAAH) activity (IC50=18 μM). 1-Monomyristin shows antibacterial activity against Staphylococcus aureus and Aggregatibacter actinomycetemcomitans and also antifungal activity against Candida albicans.