Lexel 2.5 mg Tablet contains Letrozole, a non-steroidal aromatase inhibitor used primarily in the treatment of hormone receptor-positive breast cancer in postmenopausal women. By inhibiting the aromatase enzyme, Letrozole reduces estrogen production, which is essential for the growth of certain types of breast tumors. This makes Lexel effective in slowing or stopping the progression of estrogen-dependent breast cancers