If you know you are lactose intolerant discuss this with your treatment team or pharmacist. Some versions of tamoxifen contain small amounts of lactose. The level of the drug in your body will remain high enough from the previous day.
If you miss a dose, you don’t need to take an extra one the next day. It’s best to take it at the same time every day. The recommended dose for most people is 20mg daily. Occasionally it may be prescribed as a liquid for people who have difficulty swallowing. Tamoxifen may be an option for some people who do not have breast cancer but higher risk of developing it because of their family history. To reduce the risk of breast cancer developing Tamoxifen can also be used to treat people who have: Breast cancer that has come back or spread Your specialist will discuss whether they feel it would benefit you. Some evidence suggests that taking tamoxifen after surgery for DCIS reduces the risk of breast cancer coming back in the same breast and a new breast cancer developing on either side. It’s sometimes given before surgery (known as neo-adjuvant or primary therapy) to shrink a larger breast cancer.įor people diagnosed with an early type of breast cancer called ductal carcinoma in situ (DCIS) the benefits of tamoxifen are less clear. This may be when surgery is not appropriate or needs to be delayed. Occasionally, tamoxifen may be used as the first treatment for breast cancer. This is known as adjuvant (additional) therapy. It’s usually given after surgery to reduce the risk of breast cancer returning in the same breast or spreading somewhere else in the body. Tamoxifen may be prescribed if you have primary breast cancer. When is tamoxifen given? Primary breast cancer It’s also safe to have a coronavirus vaccine while taking tamoxifen. Taking tamoxifen does not affect your risk of getting coronavirus or of becoming seriously ill if you do get it. This stops oestrogen helping the breast cancer cells to grow.įind out more about hormone receptors and breast cancer. Tamoxifen blocks the effects of oestrogen on ER+ breast cancer cells. These are known as oestrogen receptor positive or ER+ breast cancers. Some breast cancers use oestrogen in the body to help them to grow. It can also be taken by men who have breast cancer. Tamoxifen is used to treat breast cancer in both premenopausal women (women who have not yet gone through the menopause) and postmenopausal women. Tamoxifen is a hormone (endocrine) therapy drug.
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