Source of supplemental selenium in a liquid form, with each drop supplying 95 mcg of elemental selenium, an essential trace mineral providing anti-oxidant activity. Selenium is key to the production of glutathione peroxidases. Amount per serving % Daily value Selenium (As sodium selenate) 95mcg 136% Other ingredients: Purified water, Sodium bezoate and potassium sorbate (as a preservative). Disclaimer Kindly note that despatch of this product is subject to the following conditions: Proof of prescription from your practitioner Verification by our own in-house practitioner