Ecolet 5 Tablet

Letrozole (5mg)

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Ecolet 5 Tablet helps treat breast cancer in post-menopausal women. It may be used alone or with other treatments, such as surgery or radiation. It can also be used in patients with advanced breast cancer to stop the tumor from spreading to other parts of the body.

Written By Dr. Lipika Khurana, PGDHHM, BDS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 04 Feb 2026 | 03:33 PM (IST)

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General Information

Contains

Letrozole (5mg)

Marketer

Aaphia Healthcare

Storage

Store below 30°C

The content is shown in English

Product introduction

Ecolet 5 Tablet can be taken with or without food. Take it in the dose and duration prescribed by the doctor to get the most benefit. The dose and frequency depend on what you are taking it for. Your doctor will decide how much you need to improve your symptoms. You should take this medicine for as long as it is prescribed.

The most common side effects of this medicine include hot flashes. If any other side effects bother you or appear serious, let your doctor know. Your doctor may suggest ways to prevent or reduce these.

Before taking this medicine, tell your doctor if you have ever had liver or kidney disease, or have a history of osteoporosis (thinning or wasting of bones). 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 for vitamin D levels or bone density before and during treatment.

Uses of Ecolet Tablet

Breast cancer

Benefits of Ecolet Tablet

Breast cancer
Ecolet 5 Tablet is used in the treatment of hormone-sensitive breast cancer, especially in postmenopausal women. It helps lower the risk of cancer returning and supports long-term recovery after initial treatment.

How to use Ecolet 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. Ecolet 5 Tablet may be taken with or without food.

How Ecolet Tablet works

Ecolet 5 Tablet is an aromatase inhibitor. It works by decreasing the amount of estrogen (natural female hormone) produced in the body. This decrease in estrogen can slow down or stop the growth of some breast cancers that need estrogen to grow.

All substitutes for Ecolet 5 Tablet

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

Quick tips

You have been prescribed Ecolet 5 Tablet for the treatment of breast cancer.
It can be taken with or without food.
Do not drive or do anything requiring concentration until you know how Ecolet 5 Tablet affects you.
It may cause increased sweating and hot flushes. Try to keep cool by wearing light and airy clothes.
Your doctor may monitor your cholesterol level and bone mineral density (BMD) regularly as Ecolet 5 Tablet can alter their levels.
Do not take Ecolet 5 Tablet if you are pregnant or breastfeeding

Safety advice

Alcohol

CONSULT YOUR DOCTOR

It is not known whether it is safe to consume alcohol with Ecolet 5 Tablet. Please consult your doctor.

Pregnancy

UNSAFE

Ecolet 5 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

UNSAFE

Ecolet 5 Tablet is unsafe to use during breastfeeding. Data suggests that the drug may cause toxicity to the baby.

Driving

UNSAFE

Ecolet 5 Tablet may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

CAUTION

Ecolet 5 Tablet should be used with caution in patients with kidney disease. Dose adjustment may be needed.
However, there is limited information on the use of this medicine in patients with end stage kidney disease. Please consult with your doctor.

Liver

CAUTION

Ecolet 5 Tablet should be used with caution in patients with liver disease. Dose adjustment may be needed.

Interaction with drugs

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

Severe

Tamoxifen (Oral Route)

Do not consume Tamoxifen with Letrozole. If concurrent use is essential, please consult your doctor. Tamoxifen may reduce blood levels of Letrozole.

Severe

Allylestrenol (Oral Route)

Do not consume Letrozole with Allylestrenol if you have or had breast cancer. If essential, consult your doctor.

Severe

Conjugated Estrogens (Oral Route)

Do not consume Letrozole with Conjugated Estrogens if you have or had breast cancer. If essential, consult your doctor.

Severe

Dehydroepiandrosterone (Micronized) (Oral Route)

Do not consume Letrozole with Dehydroepiandrosterone (Micronized) if you have or had breast cancer. If essential, consult your doctor.

Severe

Desogestrel (Oral Route)

Do not consume Letrozole with Desogestrel if you have or had breast cancer. If essential, consult your doctor.

Frequently asked questions

Why have I been prescribed Ecolet 5 Tablet?

Ecolet 5 Tablet is an aromatase inhibitor. It is generally prescribed to treat breast cancer in women who no longer have periods, either due to menopause or after surgery or chemotherapy.

How does Ecolet 5 Tablet work?

Ecolet 5 Tablet is also known as an anti-estrogen drug. It is called so because it acts by reducing the production of estrogen in your body by blocking the enzyme aromatase, which is responsible for the production of estrogen. Estrogen stimulates the production of certain types of breast cancer in your body. These cancers are called "estrogen-dependent cancers". Reducing the production of estrogen may prevent cancer from growing.

For how long should I take Ecolet 5 Tablet?

If the breast tumor is in the advanced stage or has spread to other parts of the body, it is recommended that you continue taking Ecolet 5 Tablet till the tumor shows progression. In cases where Ecolet 5 Tablet is given after tamoxifen (another anti-estrogen used for breast cancer) or surgery, it should be given for 5 years or until the tumor comes back, whichever is first. It can also be given as a sequential treatment; 2 years of Ecolet 5 Tablet followed by 3 years of tamoxifen.

If I am taking irbesartan to control my blood pressure, can I take Ecolet 5 Tablet?

Yes, you can take irbesartan and Ecolet 5 Tablet together. However, be careful and keep a regular check on your blood pressure since Ecolet 5 Tablet may increase your blood pressure. Consult your doctor in case you have problems controlling your blood pressure.

Does Ecolet 5 Tablet affect vision?

Although it is very uncommon, Ecolet 5 Tablet may cause a cataract. So, if you experience blurred vision or eye irritation, consult your doctor immediately.

My friend who is taking Ecolet 5 Tablet often sweats a lot. Is it because of Ecolet 5 Tablet?

This could be a sign of hot flushes which is a very common side effect of Ecolet 5 Tablet. It happens due to decreased estrogen levels. The frequency of hot flushes reduces once your body adjusts to Ecolet 5 Tablet. However, in some people, the flushes and sweats may continue during the treatment and stop a few months after the treatment finishes. You can consult your doctor who will provide you a remedy if it is very bothersome.

What are the serious side effects of Ecolet 5 Tablet?

The serious side effects do not occur in everyone and very few people experience them. The serious side effects of Ecolet 5 Tablet include stroke, angina, heart attack, blood clotting, cataract, osteoporosis, and severe skin reactions.

Does Ecolet 5 Tablet cause bone loss?

Ecolet 5 Tablet may cause thinning or wasting of your bones (osteoporosis), which is due to the decrease in estrogen levels in your body. Your doctor may decide to measure your bone density (a way of monitoring for osteoporosis) before, during and after treatment.

Can I take Ecolet 5 Tablet for induction of ovulation in anovulatory infertility?

As per the Ministry of Health and Family Welfare, Ecolet 5 Tablet is restricted for use in induction of ovulation in anovulatory infertility.

Fact Box

Chemical Class

Diphenylmethanes

Habit Forming

Therapeutic Class

ANTI NEOPLASTICS

Action Class

Aromatase Inhibitors

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. p. 1762.
Masters SB. Hypothalmic & Pituitary Hormones. 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. 718.
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. 786-87.
Letrozole. East Hanover, New Jersey: Novartis Pharmaceuticals Corporation; 1997 [revised Jan. 2014]. [Accessed 03 Apr. 2019] (online) Available from:
Central Drugs Standard Control Organisation (CDSCO). [Accessed 04 Apr. 2019] (online) Available from:
National Health Service. Letrozole. [Last Reviewed: 21 Jul 2020]. [Accessed 08 Jul. 2023]. (online) Available from:
Letrozole [Package Insert]. Mumbai, India: HOPE Lifecare. [Accessed 08 Jul. 2023]. (online) Available from:
Letrozole [Prescribing Information]. East Hanover, New Jersey: Novartis Pharmaceuticals Corporation; 2020. [Accessed 08 Jul. 2023]. (online) Available from:
Letrozole. Mahaboob Nagar, Telangana: Hetero Labs Ltd.; [Accessed 04 Jan. 2026]. (online). Available from:
Letrozole. Secundarabad, Telangana: Steris Healthcare Pvt. Ltd.; [Accessed 04 Jan. 2026]. (online). Available from:

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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: Aaphia Healthcare
Address: 424 Ratna business squre, opp h k collge, ahsram road, ahmedabad, gujarat, india-38009, m- 99988 07840.

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Ecolet 5 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

Ecolet 5 Tablet

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Save more with additional offers

General Information

Contains

Marketer

Storage

Product introduction

Uses of Ecolet Tablet

Benefits of Ecolet Tablet

How to use Ecolet Tablet

How Ecolet Tablet works

All substitutes for Ecolet 5 Tablet

Goodova-L 5mg Tablet

Stimucor 5 Tablet

Pinkletro 5mg Tablet

Oneova 5 Tablet

Letsure 5 Tablet

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Tamoxifen (Oral Route)

Allylestrenol (Oral Route)

Conjugated Estrogens (Oral Route)

Dehydroepiandrosterone (Micronized) (Oral Route)

Desogestrel (Oral Route)

Frequently asked questions

Why have I been prescribed Ecolet 5 Tablet?

How does Ecolet 5 Tablet work?

For how long should I take Ecolet 5 Tablet?

If I am taking irbesartan to control my blood pressure, can I take Ecolet 5 Tablet?

Does Ecolet 5 Tablet affect vision?

My friend who is taking Ecolet 5 Tablet often sweats a lot. Is it because of Ecolet 5 Tablet?

What are the serious side effects of Ecolet 5 Tablet?

Does Ecolet 5 Tablet cause bone loss?

Can I take Ecolet 5 Tablet for induction of ovulation in anovulatory infertility?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Breast Cancer (CA 15.3/ ER/ PR)

References

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

Related/Popular tests