Gnc melatonin 5 mg: for a restful night's sleep gnc melatonin 5 mg is a supplement that offers a natural way to restful sleep. Your body naturally produces this hormone in your pineal gland and creates less of this sleep-influencing substance during the day and more at night. Melatonin 5 mg for sleep may be beneficial if you have a sleep schedule that frequently changes. Contains 5mg of melatonin to restful sleep tablets feature ingredients acceptable for vegetarian use. Gnc melatonin 5 mg - 60 vegetarian tablets (60 servings)