SERM clomid and Tamoxifen, both of which are used in PCTS. So, clomid vs tamoxifen, which should I choose? What is Clomid? Clomid is a non-steroidal SERM that promotes the release of GnRH with more FSH(follicle-stimulating hormone) and LH(luteinizing hormone). FSH and LH help increase the body's testosterone levels and are important when the …