A natural sleep supplement with a blend of efficacious ingredients to help promote restful sleep and relaxation. A pleasant tasting powder made with montmorency cherry - a natural source of the sleep hormone melatonin - glycine, hops and magnesium. What makes this supplement Bio-effective?: Glycine is a small amino acid that helps to maximise absorption and support optimal bioavailability. It is used by the body to make GABA, a neurotransmitter associated with a state of relaxation, and is therefore particularly efficacious in helping with sleep and relaxation.