Anastrozole is an aromatase inhibitor often used alongside testosterone replacement therapy (TRT) for men. Its main role is to reduce the conversion of testosterone into estrogen, which can help prevent symptoms like water retention, mood swings, breast tissue growth (gynecomastia), and decreased libido caused by high estrogen levels. By keeping estrogen within an optimal range, anastrozole supports better hormonal balance, improves overall comfort during TRT, and helps men achieve their desired health outcomes more effectively.