Premier Research Labs Melatonin-ND is a nutritional industry first, featuring melatonin in a convenient liquid form that has been cultured with beneficial probiotic organisms for active bio-availability. Melatonin-ND is not animal-derived so it is suitable for everyone, including vegetarians and vegans. This premier quality formula is fermented using a unique probiotic culture which allows rapid delivery and superior bioenergetic dynamics. Learn More