tamoxifen + progesterone

Tamoxifen + progesterone is a combination of two hormonal agents, each with distinct mechanisms of action. Tamoxifen is a selective estrogen receptor modulator (SERM) that acts primarily as an estrogen receptor antagonist in breast tissue, inhibiting the proliferative effects of estrogen on hormone-sensitive tumors. Progesterone is a natural progestogen hormone that can induce apoptosis in certain cancer cells and has protective effects against estrogen-induced carcinogenesis. The combination has been studied for potential synergistic or additive anti-cancer activity, particularly in ovarian and breast cancer models. In vitro studies suggest that while tamoxifen induces G1 cell cycle arrest and progesterone causes apoptosis, their combined use does not necessarily enhance anti-cancer efficacy beyond what is observed with progesterone alone[1][10]. This combination does not have established clinical approval as a fixed-dose product but may be explored experimentally or off-label.

Other names

progesterone and tamoxifentamoxifen and progesterone