Well Being Supplement: Jigsaw 5-HTP w/SRT supplement helps improve mood, emotional balance, and sleep quality; Made with best form of 5-HTP that exists combined it with our proprietary, sustained release technology Well Being Supplement: Jigsaw 5-HTP w/SRT supplement helps improve mood, emotional balance, and sleep quality; Made with best form of 5-HTP that exists combined it with our proprietary, sustained release technology Sustained Release Technology: The amount of active ingredient being released over time by Jigsaw Health’s 5-HTP w/ SRT allows it to be to be gradually absorbed and converted where it is most needed in the brain Purity You Can Trust: Jigsaw's L-5-Hydroxytryptophan comes from Linnea, a Swiss manufacturer committed to conforming with the highest international standards, guaranteeing the highest purity, efficacy, and safety Quality Statement: We understand that your end goal is to feel better and our products have been designed and formulated to make a noticeable difference; We love our products and believe you will too It's Fun To Feel Good: Since 2005, Jigsaw Health has been developing and delivering the highest quality nutritional supplements; We are here to help people feel healthy and happy because it's fun to feel good