Melatonin (Circadin) is a medication that contains the active ingredient melatonin, a naturally occurring hormone that helps regulate sleep-wake cycles. It is used to treat insomnia or jet lag. You can buy Melatonin uk, Melatonin (Circadin) is taken orally in the form of a slow-release tablet, which releases melatonin gradually over the course of the night, helping to maintain a steady level of the hormone in the bloodstream. Buy now at- https://www.medsforless.co.uk/melatonin/ for more.