This is Maxtreme's lower-strength liothyronine tablet: 25 mcg per unit across fifty tablets, the same hormone as the T3-Max-100 elsewhere in the catalogue at a quarter of the per-tablet content.
Liothyronine (T3) is the synthetic equivalent of the thyroid hormone the body produces from T4. It is a metabolic agent rather than an androgen, taken by mouth, with no tissue-building action of its own. Only the numeral separates this from its stronger sibling, which makes the strength printed on the strip worth checking first.