Were you looking for information about Selenium? Selenuim is a common misspelling of selenium.
Selenium, which is a type of mineral, is used by the body to produce antioxidants. It also plays a role in the regulation of thyroid hormones and may help to regulate the immune system. Prior to taking selenium supplements, tell your healthcare provider about any existing medical conditions you may have and any medications you are taking. Selenium can interact with some medicines and is not suitable for everyone.
(Click Selenium for more a more in-depth look at how selenium works, what you should be aware of before taking the supplement, and possible side effects that may occur.)