by T3) does speed fat loss. As a guideline, for most 12.5 mcg/day is a conservative “supplement” sort of dosing that seems to have no detectable adverse effect on thyroid function at all. 25 mcg/day is a “supplement” sort of dosing that does have some inhibitory effect. 50 mcg/day is a reasonably conservative bb’ing sort of dose that, of course, is more inhibitory. 75 mcg/day is getting into more of a problem area; 100 mcg/day in many cases leads to loss of muscle size and strength.– Cytomel (
These doses are in reference to legit T3 provided in tablets such as Cytomel. Liquid formulations are usually unstable and as a result, the above numbers in many cases won’t match up to experiences with liquid products, or for that matter, experience with a liquid product at one time may not match up with experience at a different time, due to the stability problem.
Individuals do vary in this but 100 mcg/day is very often quite weakening and muscle-catabolic. So far as wanting more rapid fat loss than what is achieved with 50 mcg/day, personally I’d look elsewhere than adding more T3.