Source Naturals Melatonin - Peppermint Supplement Vitamin | 1 mg | 100 Loz. Use at bedtime only o Produced in the pineal gland o Promotes restful sleep o Source Naturals Melatonin - Peppermint Supplement Vitamin | 1 mg | 100 Loz o Sold by Swanson Vitamins... - Source Naturals Melatonin - Peppermint Supplement Vitamin | 1 mg | 100 Loz.