Liquid selenium in a simple, purified water base. Clinically effective - provides antioxidant support to protect cells from oxidative stress and support immunity, fertility, and thyroid function. Optimum support - optimally absorbed, high potency liquid form with 180ug of selenium per two drops. Pure - in a simple, purified water base with no unnecessary additives. Flexible - only use what you need, easily mixed into liquids or under the tongue, and convenient to use on the go. Especially suited to individuals who have difficulty swallowing tablets or capsules, those with digestive and absorption difficulties. Suitable for vegetarians and vegans. 125 days' supply at 2 drops per day.