DescriptionSleep Science® Melatonin Helps Promote Sleep Melatonin is produced in humans by the pineal gland. A favorite of travelers, it helps support restful sleep.* Orange Liquid Option Available: 2, 4 Suggested Use: 1 dropperful before bedtime. A dropperful is approximately 1.0 ml (1 mg). Allergies: Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no salt, or artificial color, flavor or fragrance.