The active ingredients in Somnapure PM are melatonin and bromelain, according to the supplement's official website. The inactive ingredients that fulfill the Complete Tranquility Blend are valerian extract, hops extract and lavender.
The first active ingredient, melatonin, is a natural hormone found in the human body that helps initiate the sleep cycle, explains the National Sleep Foundation. The second active ingredient, bromelain, is an enzyme found in pineapple that may aid with muscle relaxation by reducing inflammation, notes the U.S. National Library of Medicine. Other ingredients in Somnapure include cellulose, FD&C blue 1, FD&C red 3, titanium dioxide and gelatin, according to Somnapure.com. The natural sleep aid is a supplement and therefore not evaluated by the FDA.