Medication Information Leaflet
Tamoxifen is used to treat breast cancer. It works by blocking the effect of estrogen, a hormone produced by your body.
If you forget to take a dose, take it as soon as you remember. However, if it is too near to your next dose, skip the missed dose and take your next dose at the usual time. Do not take two doses to make up for the missed dose.
Inform your healthcare professional if:
The symptoms of a drug allergy include one or more of the following:
If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.
Avoid taking grapefruit when you are taking this medication as grapefruit may interact with Tamoxifen.
Store in a cool and dry place, away from direct sunlight. Keep this medication away from children.
Pack Tamoxifen into a black trash bag and seal it tightly before throwing it into the rubbish chute or bin.
If you take more than the recommended dose, please seek medical advice immediately. The information provided on this page does not replace information from your healthcare professional. Please consult your healthcare professional for more information.
This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (National Healthcare Group, National University Health System and SingHealth), community pharmacies (Guardian, Unity and Watsons) and Pharmaceutical Society of Singapore. The content does not reflect drug availability and supply information in pharmacies and healthcare institutions. You are advised to check with the respective institutions for such information.
Last updated on Jan 2022
This article was last reviewed on Sunday, April 15, 2018