"I bought this product for my wife who has thyroid problems. Her endocrinologist recommended using selenium (100 mg) and zinc (15 mg) in courses lasting 3 months with a break of 3 months twice a year on a regular basis. I bought this product for my wife who has thyroid problems. Her endocrinologist recommended the use of selenium (100 mg) and zinc (15 mg) in courses lasting 3 months with a break of 3 months twice a year on a regular basis. To tell the truth, it was not easy to find the drug in the right dosage and in one pill from a reliable manufacturer. Fortunately, we found what we have been looking for here on the website of the Doc.Morris pharmacy, whose services we have been using for several years because they have very professional service from the order to delivery.My best recommendation for use!"