Your thyroid and antioxidant defenses both depend on selenium, and this delivers 100 mcg as **L-Selenomethionine** — the most bioavailable supplemental form. At 100 mcg, you're hitting the low end of the 100–200 mcg clinical range, enough to support glutathione peroxidase activity and thyroid hormone conversion.

The label suggests taking one to two tablets daily, which means you can scale up to 200 mcg — the upper end of the studied range — depending on your dietary intake and needs. This kind of dosing flexibility is useful since selenium is one of those minerals where more isn't better: the tolerable upper limit is 400 mcg.

Keep in mind that if you're already eating brazil nuts, seafood, or organ meats regularly, your baseline selenium intake may already be adequate. One tablet daily on top of a selenium-rich diet could push you toward the upper limit, so it's worth knowing your starting point.