Tamoxifen belongs to the group of cancer-fighting medications known as antineoplastics, and specifically to the type of antineoplastics known as antiestrogens. It is used in combination with other medications to treat early breast cancer. Tamoxifen fights certain types of breast cancer, called hormone responsive or estrogen receptor positive breast cancer, by blocking the effects of the hormone estrogen in the body. This prevents the growth of the types of breast cancer cells that require estrogen for growth and survival. It is also used to treat breast cancer that is advanced or has spread to other parts of the body. This medication may be available under multiple brand names and/or in several different forms. Any specific brand name of this medication may not be available in all of the forms or approved for all of the conditions discussed here. Tamoxifen blocks the actions of estrogen, a female hormone. Certain types of breast cancer require estrogen to grow. Tamoxifen is used to treat some types of breast cancer in men and women. It is also used to lower a woman's chance of developing breast cancer if she has a high risk (such as a family history of breast cancer). Use a barrier form of birth control (such as a condom or diaphragm with spermicide) while you are using this medication and for at least 2 months after your treatment ends. Tamoxifen may also be used for purposes not listed in this medication guide. You should not use tamoxifen if you are allergic to it, or if you have a history of blood clots in your veins or your lungs, or if you are also taking a blood thinner such as warfarin (Coumadin). Before using this medicine, tell your doctor if you have liver disease, high triglycerides (a type of fat in the blood), a history of cataract, or a history of stroke or blood clot. Also tell your doctor if you if you are receiving chemotherapy or radiation treatment.
Tamoxifen is a hormonal therapy drug used to treat breast cancer, womb cancer and sometimes other cancers and conditions. It is best to read this information with our general information about hormonal therapies and the type of cancer you have. Like all cancer drugs, tamoxifen can cause side effects. Your cancer doctor, nurse, or pharmacist will tell you how often you will have it. Some of the side effects can be serious, so it is important to read the detailed information below. Your healthcare team can give you advice on how to manage any side effects. Tell your doctor or nurse straight away if you feel unwell or have severe side effects, including any we do not mention here. Your cancer doctor or nurse can explain the risk of these side effects to you. If you need medical attention for any reason other than cancer, always tell the healthcare staff that you are having this treatment. Tamoxifen can be given alone or with other types of treatment. side effect of tamoxifen is blood clots, including deep vein thrombosis (DVT) and pulmonary embolus. In some cases, health care professionals may use the trade name Nolvadex when referring to the generic drug name tamoxifen. This medication is classified as an "anti-estrogen." (For more detail, see "How this drug works" section below). You should seek emergency help and notify your health care provider immediately if you develop sudden chest pain and shortness of breath. Notify your health care provider within 24 hours if you notice that one leg is swollen, red, painful and/or warm to touch and the other is not. A side effect of tamoxifen can be the development of uterine cancer. Women who have not had a hysterectomy should have regular pap smears and gyn examinations. Abnormal vaginal bleeding should be reported to your health care provider.
The recommended dose of tamoxifen is 20 mg to 40 mg daily taken in 1 dose or in 2 divided. Side effects can be mild or severe, temporary or permanent. Find a comprehensive guide to possible side effects including common and rare. to 5 years of NOLVADEX tamoxifen citrate 20 mg/day or placebo following.