Does improved bioavailability improve toxicity concerns?
Because eXselen is in the form of selenomethionine, the amount of selenium you ingest is very close to the amount you absorb. So when taking 55 mcgs of eXselen the body will absorb close to 55 mcgs. With a less bioavailable form of selenium, only 25 mcgs may be absorbed of the 55 mcgs consumed. This means that more of the inferior product needs to be taken in order for the body to absorb an effective amount. This intake is hard to measure and monitor, which could potentially lead to toxicity problems..