SERM

Selective Estrogen Receptor Modulator (SERM), not a full estrogen blocker.

Blocks estrogen from binding to certain receptors, especially in breast tissue, preventing gynecomastia (“man boobs”).

📌 True “Anti-Estrogens” like Aromatase Inhibitors (AIs) completely lower estrogen levels.

💡 So, “Selective Anti-Estrogen” because it blocks estrogen’s effects in some tissues but not others.