Used for Cancer

View FEMARA savings options available to you including Manufacturer Coupons, Rx Advantage Savings Card, Canadian Prescription Savings or FEMARA Patient Assistance Program.

Programs are suitable for individuals who want to buy FEMARA without insurance, with insurance or for those who are underinsured. You can pay as little as $0 per fill.*

Manufactured by Novartis Pharmaceuticals

*Applicable to Drug Coupons & Patient Assistance Programs

This content is intended for US audiences only

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Jamie Winn NowPatientGreen tick
Updated on 26 Apr 2024

Learn more about FEMARA

What is FEMARA?

What is FEMARA?

FEMARA is the brand name for letrozole is available as an oral tablet.

What dosages is FEMARA available in?

What dosages is FEMARA available in?

FEMARA is available as a 2.5 mg oral tablet.

What is FEMARA used for?

What is FEMARA used for?

FEMARA is an aromatase inhibitor and is used to treat breast cancer in postmenopausal women.

How does FEMARA work?

How does FEMARA work?

FEMARA is a selective non-steroidal aromatase inhibitor. Aromatase is a protein in your body that produces estrogen, which can promote the growth of some cancer cells. By blocking aromatase, FEMARA lowers the body’s normal production of estrogen. Without estrogen, some breast cancer cells can’t grow.

How do I take FEMARA?

How do I take FEMARA?

FEMARA is typically taken by mouth with a dose of 2.5 mg by mouth daily. Your dose may differ if you have liver problems.

Is it safe for me to take FEMARA?

Is it safe for me to take FEMARA?

FEMARA is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you are pregnant or have a known hypersensitivity to the active substance, or to any of the excipients.

FEMARA Common Side Effects

FEMARA Common Side Effects

Common side effects of FEMARA include:

  • Hot flashes
  • Headache
  • Increased sweating
  • Joint pain or arthritis
  • Fatigue or weakness
  • Dizziness
  • High cholesterol
  • Swelling of ankles, feet, and legs
  • Body aches or pain
FEMARA Serious Side Effects

FEMARA Serious Side Effects

Serious side effects are rare with FEMARA. Contact your healthcare provider immediately if you experience any of the following.

  • Allergic reactions: Hives, rash, swelling of the face or throat, difficulty breathing
  • Blood clots
  • Heart attack: Chest pain, can’t catch your breath, jaw or neck pain
  • Stroke: Numbness normally on one side of body, confusion, trouble seeing, trouble walking, headache
  • Unusual bleeding or bruising
Effects of other drugs, drug classes and over-the-counter products on FEMARA

Effects of other drugs, drug classes and over-the-counter products on FEMARA

The following medications may interact with FEMARA:

  • Tamoxifen – Coadministration of FEMARA and tamoxifen 20 mg daily resulted in a reduction of letrozole plasma levels of 38% on average
  • Other Anticancer Agents – There is no clinical experience to date on the use of FEMARA in combination with other anticancer agents
Who makes FEMARA?

Who makes FEMARA?

Novartis Pharmaceuticals

Is FEMARA safe in pregnancy?

Is FEMARA safe in pregnancy?

FEMARA can cause fetal harm when administered to pregnant women. You should take a pregnancy test before starting this medication and use effective contraception while on FEMARA and for at least 3 weeks after the last dose.


What to do if you missed your FEMARA dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
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Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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