I have tried many OTC sleep aids and is just waiting for his perscription to be refilled and needs to know what the active ingredient is in Sleep MD, which is a very new product. It seems like the only thing SWIM can find (besides DXM, which gives swim a bad hangover) are antihistimines. Which make swim more restless. So if anyone can give SWIM the active ingrediant in Sleep MD before stroes close that would be great =). thanks.