Very pure selenium...Extremely bioavailable...Sodium content is nutritionally insignificant...Formulated for the hypersensitive, this solution is sterilized by heat (not chemicals), after being dissolved in triple-distilled water. Hypoallergenic. Ingredients: Per 1 tsp or 5 gm: Selenium as sodium selenite 200 mcg 48 tsp/bottle Suggested Use: 1 tsp daily. DO NOT exceed 400 mcg selenium per day from all sources. Those who are sensitive should dilute to build up tolerance. PRODUCT NEEDS TO BE REFRIGERATED WHEN OPENED *************THE REASON IT NEEDS TO BE REFRIGERATED IS THAT THE MEDIUM COULD POTENTIALLY GROW BACTERIA IF LEFT UNREFRIGERATED. Here are all the ingredients in this product. Not what you are looking for? Click here. Click on any ingredient below to get a complete selection of all products containing that ingredient.Active Ingredients:Selenium Selenium (sodium selenite) Inactive Ingredients:Sodium Hydroxide Not what you are looking for? Click here. Dietary Considerations:Free of Artificial Colors/Flavors Delivery Formats:Liquid Intended Users:Not specified