It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the Web MD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911. Tamoxifen for Low Testosterone in Males My previous article discussed the use of clomiphene for increasing testosterone in hypo-gonadal males. Clomiphene works as an estrogen receptor blocker in the hypothalamus, thus stimulating LH/FSH which then stimulate testicular testosterone production. Tamoxifen Another drug which similarly blocks estrogen receptors is Tamoxifen (tamoxiphen), commonly used in breast cancer survivors to block estrogen receptors. Similar to the use of clomiphene, tamoxiphen has been used to treat low testosterone and low sperm counts (infertility) in males. (1-3) Usual dosage is 10-20 mg tamoxifen per day for 6 to 9 months.(1-3) Reduction of Growth Hormone Levels by Tamoxifen An unwanted effect of tamoxifen is 25% reduction in IGF-1 (growth hormone) levels.(5) Tamoxifen reduced peak Growth Hormone levels in mice by 60%.(6) Ocular Toxicity Adverse effects of tamoxifen relate to the ocular toxicity. Regular eye exams at the ophthalmology office every 6 months is advised (4) Articles with related interest: pubmed/640052 Fertil Steril. Hormonal effects of an antiestrogen, tamoxifen, in normal and oligospermic men. The administration of tamoxifen, 20 mg/day for 10 days, to normal males produced a moderate increase in luteinizing hormone (LH), follicle-stimulating hormone (FSH), testosterone, and estradiol levels, comparable to the effect of 150 mg of clomiphene citrate (Clomid). However, whereas Clomid produced a decrease in the LH response to LH-releasing hormone (LHRH), no such effect was seen after the administration of tamoxifen.
Aug 29, 2012. It slows cancer growth and relieves symptoms in many men by lowering. Tamoxifen is an anti-estrogen therapy commonly used in breast. Uses. Tamoxifen is used to treat breast cancer. It is also used to reduce the chances of breast cancer in high-risk patients. This medication can block the growth of breast cancer.