Tamoxilon 20mg Tablet

Reviewed By Dr. Mekhala Chandra, MD, MBBS

Last updated on 19 Jan 2026 | 08:12 PM (IST)

Tamoxilon 20mg Tablet is an anti-estrogen. It is used in the treatment of breast cancer. It is also used to reduce the risk of breast cancer in pre- and postmenopausal women with a high risk. This medicine helps to slow down the growth and multiplication of cancer cells.

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General Information

Contains

Tamoxifen (20mg)

Marketer

Celon Laboratories Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Tamoxilon 20mg Tablet is also helpful in the treatment of infertility. It can be taken with or without food, but take it at the same time to get the most benefit. It should be taken with your doctor's advice. The dose and duration of the treatment may depend on the severity of your condition. Your doctor will decide how much you need to improve your symptoms. You should take this medicine for as long as it is prescribed for you.

The most common side effects of this medicine include hot flashes, vaginal bleeding, and menstraul irregularities. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. It makes birth control pills less effective, hence use a condom and other preventive measures to avoid pregnancy.

Before taking this medicine, tell your doctor if you are on treatment for infertility or have a blood clot disorder. Your doctor should also know about all other medicines you are taking, as many of these may make this medicine less effective or change the way it works. Tell your doctor if you are pregnant or breastfeeding. Your doctor may perform some blood tests to check liver function and calcium levels in the body.

Uses of Tamoxilon Tablet

Treatment of Breast cancer

Benefits of Tamoxilon Tablet

Treatment of Breast cancer
Tamoxilon 20mg Tablet relieves the symptoms of breast cancer such as breast lumps, bloody discharge from nipple or changes in the shape or texture of the breast. It works by altering the production of those hormones in the body that are essential for the growth and spread of breast cancer, both in pre as well as postmenopausal women. It may also interact with other hormones or have a direct effect on the cancer to stop its growth.

Side effects of Tamoxilon Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Tamoxilon

Hot flashes
Vaginal discharge
Metrorrhagia (menstrual bleeding at irregular intervals)

How to use Tamoxilon Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Tamoxilon 20mg Tablet may be taken with or without food.

How Tamoxilon Tablet works

Tamoxilon 20mg Tablet is a hormone-based medication. It works by binding to estrogen receptors and blocking the effects of estrogen (a natural female hormone) in the breast tissue. This slows down the growth and multiplication of breast cancer cells.

All substitutes for Tamoxilon 20mg Tablet

For information purposes only. Consult a doctor before taking any medicine.

Quick tips

Tamoxilon 20mg Tablet also reduces the risk of cancer coming back and of getting cancer in the other breast.
Use a reliable barrier contraceptive method (such as condoms) to prevent pregnancy while you are taking this medicine and for 2 months after you stop taking it.
Inform your doctor if you are pregnant, planning to conceive, or breastfeeding.
Inform your doctor if your periods become irregular, especially if associated with heavier bleeding.
Do not stop taking the medicine without talking to your doctor first.

Safety advice

Alcohol

CONSULT YOUR DOCTOR

It is not known whether it is safe to consume alcohol with Tamoxilon 20mg Tablet. Please consult your doctor.

Pregnancy

UNSAFE

Tamoxilon 20mg Tablet is highly unsafe during pregnancy. It can cause serious harm to the unborn baby, including birth defects and pregnancy loss. Do not use this medicine if you are pregnant or planning to become pregnant.

Breast feeding

CONSULT YOUR DOCTOR

Tamoxilon 20mg Tablet may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.

Driving

CONSULT YOUR DOCTOR

It is not known whether Tamoxilon 20mg Tablet alters the ability to drive. Do not drive if you experience any symptoms that affect your ability to concentrate and react. Please consult your doctor.

Kidney

CONSULT YOUR DOCTOR

There is limited data available on the use of Tamoxilon 20mg Tablet in patients with kidney disease. Please consult your doctor.

Liver

CONSULT YOUR DOCTOR

There is limited data available on the use of Tamoxilon 20mg Tablet in patients with liver disease.

Interaction with drugs

Taking Tamoxilon with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Severe

Allylestrenol (Oral Route)

Do not consume Tamoxifen with Allylestrenol if you have or had breast cancer. If essential, consult your doctor. Allylestrenol may reduce the efficacy of Tamoxifen.

Severe

Bupropion (Oral Route)

Do not consume Tamoxifen with Bupropion.

Severe

Cinacalcet (Oral Route)

Do not consume Tamoxifen with Cinacalcet.

Severe

Conjugated Estrogens (Oral Route)

Do not consume Tamoxifen with Conjugated Estrogens if you have or had breast cancer. If essential, consult your doctor. Conjugated Estrogens may reduce the efficacy of Tamoxifen.

Severe

Dehydroepiandrosterone (Micronized) (Oral Route)

Do not consume Tamoxifen with Dehydroepiandrosterone (Micronized) if you have or had breast cancer. If essential, consult your doctor. Dehydroepiandrosterone (Micronized) may reduce the efficacy of Tamoxifen.

Frequently asked questions

What is Tamoxilon 20mg Tablet and for what it is used for?

Tamoxifen is a medicine, which works against estrogen, a female sex hormone. It is used in the treatment of estrogen dependent breast cancer in women. It may also be used in the treatment of estrogen-dependent breast cancer in males.

How and in what dose should I use Tamoxilon 20mg Tablet?

Take it as per the advice of your doctor. The number of doses you take each day and the duration depends on your medical problem. Take your tablet at about the same time every day to ensure consistent levels of medicine in your body. You can take it with or without food. Treatment with Tamoxilon 20mg Tablet may be long term and you may require to take it for several years.

What if I forget to take Tamoxilon 20mg Tablet?

If you forget to take a dose of Tamoxilon 20mg Tablet, take it as soon as you remember. If it is near to your next dose, skip it and follow your usual dosing schedule. Do not take two doses at the same time to make up for the forgotten one.

What if I stop taking Tamoxilon 20mg Tablet?

Do not stop taking Tamoxilon 20mg Tablet, even if you start feeling well, unless your doctor tells you. Stopping it early may increase the risk of breast cancer coming back.

What are the common side effects of using Tamoxilon 20mg Tablet?

The most common side effects associated with Tamoxilon 20mg Tablet include menopausal symptoms such as hot flushes, night sweats, sleep disturbance, vaginal irritation, loss of sex drive and mood changes. It may also cause fluid retention, vaginal discharge, indigestion, nausea, and changes in your periods. If any of these bother you, consult with your doctor.

Fact Box

Chemical Class

Stilbenes

Habit Forming

Therapeutic Class

ANTI NEOPLASTICS

Action Class

Selective estrogen receptor modulators (SERM)- Breast Cx

Related lab tests

Breast Cancer (CA 15.3/ ER/ PR)

References

Moy B, Lee RJ, Smith M. Natural Products in Cancer Chemotherapy: Hormones and Related Agents. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. New York, New York: McGraw-Hill Medical; 2011. pp. 1756-59.
Chrousos GP. The Gonadal Hormones & Inhibitors. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. p. 716.
Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 1311-14.
Tamoxifen citrate [Summary of Product Characteristics]. Thane, India: Khandelwal Laboratories Pvt. Ltd.; 2019. [Accessed 07 Jan. 2025] (online) Available from:
CiplaMed. Tamoxifen citrate [Prescribing Information]. [Accessed 25 Jul. 2024] (online) Available from:
Tamoxifen citrate [Prescribing Information]. Fort Lauderdale, FL: Andrx Pharmaceuticals, Inc.; 2007. [Accessed 07 Jan. 2025] (online) Available from:
Central Drugs Standard Control Organisation (CDSCO). [Accessed 04 Apr. 2019] (online) Available from:
Tamoxifen [Summary of Product Characteristics]. Thane, India: Khandelwal Laboratories Pvt. Ltd.; 2019.

User feedback

Patients taking Tamoxilon 20mg Tablet

Once A Day

75%

Twice A Day

25%

What are you using Tamoxilon Tablet for?

Breast cancer

71%

Others

29%

How much was the improvement?

Excellent

56%

Average

44%

What were the side-effects while using Tamoxilon 20mg Tablet?

No Side Effect

60%

Vaginal bleeding

20%

Fatigue

20%

How do you take Tamoxilon Tablet?

With food

80%

With or without food

20%

Please rate Tamoxilon 20mg Tablet on price

Expensive

50%

Not Expensive

33%

Average

17%

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Celon Laboratories Ltd
Address: Plot No 264, Patrika Nagar Madhapur, Hitech City Hyderabad, Telangana India - 500081

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Tamoxilon 20mg Tablet. Once the pharmacy accepts your order, the details of the pharmacy will be shared with you. Acceptance of your order is based on the validity of your doctor's ℞ and the availability of this medicine.

In case of any issues, contact us

Email ID: [email protected]
Phone Number: 0124-4166666
Address: 5th Floor Tower - B of the Presidency Building, 46/4 Mehrauli Gurgaon Road, Sector 14, Gurugram, Haryana-122001, India

Lab tests offered by us

Why we need a prescription?

Provide right medicines

Prescriptions are complex documents. We proof read and recheck at various steps to provide you the right medication in the correct form and dose

In accordance with the law

Most medicines cannot be sold without a valid prescription, as per the Drugs and Cosmetics Act, 1940 and Rules, 1945

Tamoxilon 20mg Tablet

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Tamoxilon Tablet

Benefits of Tamoxilon Tablet

Side effects of Tamoxilon Tablet

How to use Tamoxilon Tablet

How Tamoxilon Tablet works

All substitutes for Tamoxilon 20mg Tablet

Mamofen 20 Tablet

Tamtero 20 Tablet

CYTOTam 20 Tablet

Entax 20mg Tablet

Tamodex 20 Tablet

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Allylestrenol (Oral Route)

Bupropion (Oral Route)

Cinacalcet (Oral Route)

Conjugated Estrogens (Oral Route)

Dehydroepiandrosterone (Micronized) (Oral Route)

Frequently asked questions

What is Tamoxilon 20mg Tablet and for what it is used for?

How and in what dose should I use Tamoxilon 20mg Tablet?

What if I forget to take Tamoxilon 20mg Tablet?

What if I stop taking Tamoxilon 20mg Tablet?

What are the common side effects of using Tamoxilon 20mg Tablet?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Breast Cancer (CA 15.3/ ER/ PR)

References

User feedback

Patients taking Tamoxilon 20mg Tablet

What are you using Tamoxilon Tablet for?

How much was the improvement?

What were the side-effects while using Tamoxilon 20mg Tablet?

How do you take Tamoxilon Tablet?

Please rate Tamoxilon 20mg Tablet on price

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

In case of any issues, contact us

Lab tests offered by us

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