The present invention is directed to nutritional and nutraceutical compositions which comprise novel mixtures of two or more indole-based dietary supplements such as L-tryptophan and melatonin, together with selected minerals and vitamins that stimulate tryptophan metabolism in the direction of serotonin and melatonin, and to their use in a preferred embodiment of the invention in a readily ingested beverage form, optionally combined with a range of other natural ingredients designed to improve the health and state of mind of human subjects. Alternative dosage forms, such as tablets for oral dosing, and dosage forms for buccal and sublingual administration, including thin films, are also incorporated in the present invention. Health improvements include the treatment of disorders of circadian rhythm, such as shift work disorder and jet lag, the induction of relaxation and a restful frame of mind, as well as providing restorative sleep function. The compositions have utility in the treatment of jet lag disorder, circadian rhythm sleep disorders including shift work disorder, and other sleep-related problems.
