An endocannabinoid enhancer (eCBE) is a type of cannabinoidergic [1] drug that enhances the activity of the endocannabinoid system by increasing extracellular concentrations of endocannabinoids. [2] [3] [4] [5] Examples of different types of eCBEs include fatty acid amide hydrolase (FAAH) inhibitors, monoacylglycerol lipase (MAGL) inhibitors, and endocannabinoid transporter (eCBT) inhibitors (or "endocannabinoid reuptake inhibitors" ("eCBRIs")). [2] [3] [4] [5] An example of an actual eCBE is AM404, the active metabolite of the analgesic paracetamol (acetaminophen; Tylenol) and a dual FAAH inhibitor and eCBRI. [6] [7] [8]