Tamoxifen is used to treat breast cancer. Some breast cancers need the hormone oestrogen to grow. Tamoxifen reduces the effects of oestrogen, which slows cancer growth.
Take tamoxifen regularly as directed with a glass of water.
If it is nearly time for your next dose, skip the missed dose and take your next dose at the usual time. Otherwise, take the missed dose as soon as you remember. Do not take two doses at the same time.
Some medicines available without a prescription may react with tamoxifen including:
Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products (e.g. St John's wort) or recreational drugs.
|Side Effects||Recommended action|
Symptoms of a blood clot including: sudden shortness of breath, swelling or pain in one leg
|Tell your doctor immediately|
Unexpected vaginal bleeding, changes in periods
Changes in vision
|Tell your doctor|
Hair loss or thinning
|Tell your doctor if troublesome|
|Take with food and tell your doctor if symptoms persist|
If you notice any other effects, discuss them with your doctor or pharmacist.
This leaflet contains important, but not all, information about this medicine.
Prepared by the PILs Committee at Christchurch Hospital, Canterbury District Health Board, New Zealand. October 2018
For more general information about this sheet and its contents, see: What does a My Medicines sheet cover?
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My Medicines Patient Information Leaflets (PILs) contain important, but not all, information about the medicines they describe.
For more information about the sheets, see: What does a My Medicines sheet cover?
My Medicines is developed by a team at the Canterbury District Health Board. Our team is made up of doctors, pharmacists, and a non-medical person to help us keep to plain language. We also discuss our information with specialist health professionals or groups when needed