Qualaquin and Fall - a phase IV clinical study of FDA data

Summary:

Fall is reported as a side effect among people who take Qualaquin (quinine sulfate), especially for people who are male, 60+ old, have been taking the drug for < 1 month also take Ativan, and have Pain.

The phase IV clinical study analyzes which people have Fall when taking Qualaquin. It is created by eHealthMe based on reports of 252 people who have side effects when taking Qualaquin from the FDA, and is updated regularly.

What is Qualaquin?

Qualaquin has active ingredients of quinine sulfate. It is often used in leg pain. eHealthMe is studying from 281 Qualaquin users. Check the latest studies of Qualaquin.

What is Fall?

Fall is found to be associated with 3,289 drugs and 3,757 conditions by eHealthMe. Check the latest studies of Fall.

On Jan, 22, 2026

252 people reported to have side effects when taking Qualaquin.
Among them, 12 people (4.76%) have Fall.

Among these 12 people:

How long have people been on Qualaquin when they have Fall? *

What is the gender of people who have Fall when taking Qualaquin? *

female: 33.33 %
male: 66.67 %

What is the age of people who have Fall when taking Qualaquin? *

What are other drugs people take besides Qualaquin? *

What are other side effects people have besides Fall? *

Dehydration (dryness resulting from the removal of water): 5 people, 41.67%
Dyspnea (difficult or laboured breathing): 5 people, 41.67%
Muscle Spasms (muscle contraction): 5 people, 41.67%
Arrhythmias (irregular heartbeat): 4 people, 33.33%
Dermatitis Acneiform (dermatoses including acne vulgaris, rosacea, folliculitis, and perioral dermatitis): 4 people, 33.33%
Stomatitis (inflammation of mucous membrane of mouth): 4 people, 33.33%
Weight Decreased: 3 people, 25.00%
Rib Fracture: 3 people, 25.00%
Blood Iron Decreased: 3 people, 25.00%
Mitral Valve Incompetence (inefficient heart valve): 3 people, 25.00%

What are the existing conditions these people have? *

Pain: 5 people, 41.67%
Seasonal Allergy (allergic condition due to certain season): 4 people, 33.33%
Nausea (feeling of having an urge to vomit): 4 people, 33.33%
High Blood Pressure: 4 people, 33.33%
Dermatitis (inflammation of the skin resulting from direct irritation by an external agent or an allergic reaction to it): 4 people, 33.33%
Dehydration (dryness resulting from the removal of water): 4 people, 33.33%
Pneumonia: 3 people, 25.00%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 3 people, 25.00%
Nasal Congestion (blockage of the nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels): 2 people, 16.67%
Infection: 2 people, 16.67%

* Approximation only. Some reports may have incomplete information.

Do you take Qualaquin and have Fall?

- Check whether Fall 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 Qualaquin:

Qualaquin (281 reports)

Fall treatments and more:

Fall (403,513 reports)

Browse all side effects of Qualaquin:

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 Fall:

Fall (3,289 drugs)

Browse all the conditions that are associated with Fall:

Fall (3,757 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on quinine sulfate (the active ingredients of Qualaquin) and Qualaquin (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.