If you're trying to find one of the most effective selenium supplements available today, look no further than Swanson Selenium. Selenium has potent antioxidant qualities that help protect against cellular damage from free radicals. This important trace element promotes heart, thyroid, immune and prostate health. Each single-capsule serving delivers 200 mcg selenium as L-selenomethionine.<br/><ul><li>Powerful antioxidant which protects against free radicals and oxidative stress</li><li>Trace element that is essential for many of the body's basic functions</li><li>Maintains cardiovascular, thyroid and immune health</li><li>100% MONEY BACK GUARANTEE – Our products reflect our commitment to giving you the best quality and service at the best price. We guarantee that every product you purchase is made from the purest, freshest nutrients and meets the highest quality standards. If you aren’t completely satisfied with any product(s) purchased within the last 30 days, simply return the unused portion to us for a full refund.</li><li>Per GMP guidelines set forth by the FDA, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are formulated for 12 months.</li></ul>