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.
Hormone therapy (sometimes called endocrine therapy) is a way to treat cancer by using hormones or drugs or other treatments that affect hormones. Hormone therapy is a form of systemic therapy, like chemotherapy. It can be used after surgery (adjuvant therapy) to help lower the risk of cancer coming back, or before surgery (neoadjuvant treatment). It is also used to treat cancer that has spread, or cancer that has come back after treatment (recurred). Some breast cancers grow in response to the hormones estrogen or progesterone. Estrogen and progesterone are usually thought of as female hormones, but men have them in their bodies also, just at lower levels. About 9 of 10 breast cancers in men are hormone receptor-positive. The hormonal therapy tamoxifen (brand name: Nolvadex) is commonly used to treat men who've been diagnosed with breast cancer. Breast cancer is a rare disease in men, but it does happen. A study has found that many men have problems while taking tamoxifen and about 20% of them stop taking it (either on their own or as directed by their doctors) because of unacceptable side effects. About 2,100 new cases of invasive breast cancer are expected to be diagnosed in men in 2011. A man's lifetime risk of breast cancer is about 1 in 1,000. As in women, most male breast cancer is hormone-receptor-positive. The hormones estrogen and progesterone can potentially support the growth and spread of hormone-receptor-positive breast cancers. So hormonal therapy that blocks the effect of these hormones -- like tamoxifen -- can be a good treatment option for hormone-receptor-positive breast cancer in both men and women. In this study, the researchers looked at the treatment records of 126 men diagnosed with breast cancer between 19.
Commonly reported side effects of tamoxifen include: amenorrhea, fluid retention, hot flash, nausea, vaginal discharge, vaginal hemorrhage, weight loss, and skin changes. Other side effects include: infection, sepsis, alopecia, constipation, cough, diarrhea, edema, increased serum aspartate aminotransferase, infrequent uterine bleeding, menstrual disease, ostealgia, vomiting, and weight gain. See below for a comprehensive list of adverse effects. Applies to tamoxifen: oral solution, oral tablet Along with its needed effects, tamoxifen may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking tamoxifen: Some side effects of tamoxifen may occur that usually do not need medical attention. "UK Summary of Product Characteristics." O 0Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances. These side effects may go away during treatment as your body adjusts to the medicine. In 2006, the large STAR clinical study concluded that raloxifene is equally effective in reducing the incidence of breast cancer, but after an average 4-year follow-up, although the difference was not statistically significant, there were 36% fewer uterine cancers and 29% fewer blood clots in women taking raloxifene than in women taking tamoxifen. Tamoxifen improves fertility in males with infertility by disinhibiting the hypothalamic–pituitary–gonadal axis (HPG axis) via ER antagonism and thereby increasing the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) and increasing testicular testosterone production. It is taken as a preventative measure in small doses, or used at the onset of any symptoms such as nipple soreness or sensitivity. Other drugs are taken for similar purposes such as clomifene and the anti-aromatase drugs which are used in order to try to avoid the hormone-related adverse effects. Occasionally tamoxifen is used in treatment of the rare conditions of retroperitoneal fibrosis A report in September 2009 from Health and Human Services' Agency for Healthcare Research and Quality suggests that tamoxifen, raloxifene, and tibolone used to treat breast cancer significantly reduce invasive breast cancer in midlife and older women, but also increase the risk of adverse side effects. Some cases of lower-limb lymphedema have been associated with the use of tamoxifen, due to the blood clots and deep vein thrombosis (DVT) that can be caused by this medication. Resolution of the blood clots or DVT is needed before lymphedema treatment can be initiated.
Jul 6, 2015. Tamoxifen for Low Testosterone in Males. My previous article discussed the use of clomiphene for increasing testosterone in hypo-gonadal. For men, tamoxifen can cause * headache * nausea and vomiting * skin rash * sexual side effects like erectile dysfunction or a lower sex drive.