At 200 mcg per tablet, you're getting **Selenium** right at the top of the clinically studied range (100–200 mcg/day) used in research on immune function, thyroid support, and antioxidant defense. That's a full effective dose in a single tablet with no need to double up.

The form here is L-selenomethionine, which is the most bioavailable version of supplemental selenium — your body absorbs and retains it more efficiently than alternatives like sodium selenite or selenate.

One thing to keep in mind: 200 mcg is already well above the 55 mcg RDA, and the tolerable upper limit is 400 mcg/day. If you're also getting selenium from a multivitamin or Brazil nuts, you could overshoot that ceiling quickly. Stick to one source at a time.