Femara and Drop attacks - a phase IV clinical study of FDA data

Summary:

Drop attacks is reported as a side effect among people who take Femara (letrozole), especially for people who are also take Lexapro, and have Arthritis.

The phase IV clinical study analyzes which people have Drop attacks when taking Femara. It is created by eHealthMe based on reports of 19,093 people who have side effects when taking Femara from the FDA, and is updated regularly.

What is Femara?

Femara has active ingredients of letrozole. It is often used in breast cancer. eHealthMe is studying from 19,630 Femara users. Check the latest studies of Femara.

What is Drop attacks?

Drop attacks (sudden spontaneous falls while standing or walking) is found to be associated with 146 drugs and 236 conditions by eHealthMe. Check the latest studies of Drop attacks.

On Jul, 15, 2026

19,093 people reported to have side effects when taking Femara.
Among them, 16 people (0.08%) have Drop attacks.

Among these 16 people:

What are other drugs people take besides Femara? *

What are other side effects people have besides Drop attacks? *

Weight Increased: 16 people, 100.00%
Dyspnea (difficult or laboured breathing): 16 people, 100.00%
Fainting (loss of consciousness and postural tone): 16 people, 100.00%
Fatigue (feeling of tiredness): 16 people, 100.00%
Fistula (an abnormal connection or passageway between two): 16 people, 100.00%
Gingival Ulceration (ulcer on gums): 16 people, 100.00%
Gingivitis (inflammation of gums): 16 people, 100.00%
Headache (pain in head): 16 people, 100.00%
High Blood Pressure: 16 people, 100.00%
Hypercalcaemia (elevated calcium (ca+) level in the blood): 16 people, 100.00%

What are the existing conditions these people have? *

Sleep Disorder: 16 people, 100.00%
Nausea (feeling of having an urge to vomit): 16 people, 100.00%
Muscle Spasms (muscle contraction): 16 people, 100.00%
Hypercalcaemia (elevated calcium (ca+) level in the blood): 16 people, 100.00%
Depression: 16 people, 100.00%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 16 people, 100.00%

* Approximation only. Some reports may have incomplete information.

Do you take Femara and have Drop attacks?

- Check whether Drop attacks is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, long term effects of, and alternative drugs to Femara:

Femara (19,630 reports)

Drop attacks treatments and more:

Drop attacks (789 reports)

Browse all side effects of Femara:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all the drugs that are associated with Drop attacks:

Drop attacks (146 drugs)

Browse all the conditions that are associated with Drop attacks:

Drop attacks (236 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on letrozole (the active ingredients of Femara) and Femara (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.