Dietary Supplement Advanced Fast Acting Formula 5-HTP, Suntheanine & Melatonin Recommended by Dr. Michael Murray Purity & Potency Guaranteed Tranquil Sleep formula provides a unique combination of natural compounds that support relaxation and enhance sleep quality. In a tasty fruit flavored chewable tablet. All Natural Factors products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.