Tamoxifen
$0.58
Tamoxifen is used to treat and help prevent breast cancer by blocking the effect of oestrogen on cancer cells.
Drug Information
5 reviews for Tamoxifen
Tamoxifen is a hormone medicine used to treat and help prevent breast cancer. It blocks the effect of oestrogen on breast cancer cells.
It can be used before and after menopause, and in men with breast cancer.
What is it used for?
- Early and advanced breast cancer (hormone receptor-positive)
- Reducing breast cancer risk in high-risk women
- Some types of infertility (in some countries)
How does it work?
Tamoxifen attaches to oestrogen receptors on breast cancer cells, blocking oestrogen from making them grow.
This information is written in simple words to help you understand this product. It does not replace advice from your doctor or pharmacist.
Read these points before you start. If any of them apply to you, talk to your doctor or pharmacist first.
- It raises the risk of blood clots and womb (uterine) cancer. Report any unusual vaginal bleeding.
- Some antidepressants (fluoxetine, paroxetine) and bupropion can make tamoxifen less effective.
- Do not take it if you are pregnant. Use non-hormonal contraception during treatment and for 2 months after.
- Tell your doctor if you have had blood clots or are having surgery.
- Tell your doctor or pharmacist about every other medicine, vitamin or herbal product you use.
- Keep this product out of the reach and sight of children.
Like all medicines, Tamoxifen can cause side effects, but not everybody gets them.
Common side effects
- Hot flushes
- Vaginal discharge or dryness
- Irregular periods
- Feeling sick
- Tiredness
These are usually mild and often get better as your body gets used to it. Tell your doctor if they bother you or do not go away.
Stop using it and get medical help straight away if you notice:
- Pain, swelling or redness in one leg, or sudden chest pain and breathlessness (possible blood clot)
- Unusual vaginal bleeding, especially after menopause, or pelvic pain
- Sudden weakness, numbness or trouble speaking
- Changes in eyesight
This is not a complete list. If you notice anything unusual, ask your doctor or pharmacist.
- Take one tablet once a day, at the same time each day, with or without food.
- The usual dose is 20 mg once a day.
- Swallow the tablet with water.
- Treatment usually lasts 5 to 10 years.
If you miss a dose: Take it as soon as you remember, unless it is nearly time for your next dose. Never take two doses at once.
If you use too much: Contact your doctor, a poison control centre or your local emergency number straight away, even if you feel fine. Take the pack with you.
How to store it: Keep it in its original pack at room temperature (below 25°C / 77°F), away from heat, damp and direct sunlight. Do not use it after the expiry date.
- QHow long will I take Tamoxifen?
- A
Usually 5 to 10 years.
- QCan Tamoxifen cause hot flushes?
- A
Yes, hot flushes are common. Talk to your doctor if they are hard to cope with.
- QCan I take antidepressants with Tamoxifen?
- A
Some can reduce tamoxifen's effect. Ask your doctor which ones are safe.

Ella Tanaka –
My order went through without any problems. It was what I expected when I opened it. Customer service was polite and helpful. Creating an account and ordering was painless.
Meera Bekele –
Quick review of my recent order. Shipping was fast for me. Everything inside was snug and protected. Thank you, I will be ordering again.
Arjun Dubois –
A friend suggested this site, so I ordered Tamoxifen here. It was wrapped well enough that I had no worry about damage. The listing was easy to understand and nothing felt confusing. Pleased with the whole thing.
Emma Perry –
The product matched the description on the page. I paid less for Tamoxifen here than I have elsewhere. It was a pleasant experience and I am glad I chose this site.
Joseph Suzuki –
I ordered from here after comparing a few options. Plain, tidy packaging and everything inside was in order. It was dispatched fast and reached me soon after. I am satisfied and will come back for my next order.