Letroz 2.5

Tablet · Sun Pharma
PRESCRIPTION MEDICINE

Letroz 2.5 is a tablet made by Sun Pharma that contains Letrozole 2.5 mg. Letrozole is a aromatase inhibitor: treats hormone-sensitive breast cancer; also used to help ovulation in fertility treatment.

Ingredient (salt)Amount
Letrozole2.5 mg

What it is used for

Treats hormone-sensitive breast cancer; also used to help ovulation in fertility treatment.

How it works

An aromatase inhibitor that lowers oestrogen; used for breast cancer and, off-label, to trigger ovulation in fertility treatment (especially PCOS).

How to take it

Breast cancer: 2.5 mg daily for years. Fertility: usually 2.5 to 7.5 mg daily for 5 days early in the cycle, as directed.

Common side effects

  • Hot flushes
  • Joint pain
  • Tiredness
  • Headache

Get medical help straight away if

  • Bone pain or fracture with long use
  • Low mood

Be careful

Use only under specialist care; can cause joint pain and hot flushes.

Other medicines and interactions

Oestrogen-containing medicines cancel its effect.

Pregnancy and breastfeeding

Must not be taken once pregnant; not for use while breastfeeding.

Common questions

What is Letroz 2.5?

Letroz 2.5 is a tablet by Sun Pharma containing Letrozole 2.5 mg.

What is Letroz 2.5 used for?

Treats hormone-sensitive breast cancer; also used to help ovulation in fertility treatment.

How should I take Letroz 2.5?

Breast cancer: 2.5 mg daily for years. Fertility: usually 2.5 to 7.5 mg daily for 5 days early in the cycle, as directed. Always follow the dose your doctor or the pack gives.

What are the side effects of Letroz 2.5?

Common side effects include: Hot flushes, joint pain, tiredness, headache. Get medical help straight away for: Bone pain or fracture with long use, low mood.

Does Letroz 2.5 need a prescription?

Yes. In India it is a prescription (Schedule H) medicine, so a pharmacist should sell it only with a doctor's prescription.

Can I take Letroz 2.5 in pregnancy or while breastfeeding?

Must not be taken once pregnant; not for use while breastfeeding.

What are the substitutes for Letroz 2.5?

We have no other brand with exactly the same composition and strength in our list yet. Ask your pharmacist for an equivalent.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.