Melatonin is a neuro-hormone (amino acid) naturally produced in the pineal gland in the brain and present in high amounts in the gastrointestinal tract. It is involved in many of the body, brain and glandular biological functions including regulation of normal sleep/wake cycles. This mid-high potency is suited for individuals with more challenging sleep issues. The vegetarian capsules also makes this product suitable for vegetarians / vegans.Each capsule contains: Melatonin 5 mg Non-Medicinal Ingredients: Cellulose, Veg Capsule (pullulan, water) Magnesium Stearate (vegetable source). Adult Dosage: Take 1-2 capsule daily at or before bedtime. For use beyond 4 weeks, consult a health care practitioner.