Quinine and Faeces discolored - a phase IV clinical study of FDA data

Summary:

Faeces discolored is reported as a side effect among people who take Quinine (cinchona), especially for people who are female, 60+ old, also take Paracetamol, and have High blood pressure.

The phase IV clinical study analyzes which people have Faeces discolored when taking Quinine. It is created by eHealthMe based on reports of 4,887 people who have side effects when taking Quinine from the FDA, and is updated regularly.

What is Quinine?

Quinine has active ingredients of cinchona. It is often used in leg pain. eHealthMe is studying from 4,981 Quinine users. Check the latest studies of Quinine.

What is Faeces discolored?

Faeces discolored is found to be associated with 1,249 drugs and 1,834 conditions by eHealthMe. Check the latest studies of Faeces discolored.

On Aug, 10, 2026

4,887 people reported to have side effects when taking Quinine.
Among them, 15 people (0.31%) have Faeces discolored.

Among these 15 people:

What is the gender of people who have Faeces discolored when taking Quinine? *

female: 92.86 %
male: 7.14 %

What is the age of people who have Faeces discolored when taking Quinine? *

What are other drugs people take besides Quinine? *

What are other side effects people have besides Faeces discolored? *

Diarrhea: 8 people, 53.33%
Abdominal Pain: 7 people, 46.67%
Appetite - Decreased (decreased appetite occurs when you have a reduced desire to eat): 7 people, 46.67%
Depression: 5 people, 33.33%
Rashes (redness): 5 people, 33.33%
Dyspnea (difficult or laboured breathing): 5 people, 33.33%
Weight Decreased: 5 people, 33.33%
Gingival Pain (gum pain): 5 people, 33.33%
Gingival Bleeding (bleeding gums): 5 people, 33.33%
Memory Loss: 5 people, 33.33%

What are the existing conditions these people have? *

High Blood Pressure: 4 people, 26.67%
Transient Ischaemic Attack (a transient episode of neurologic dysfunction caused by ischemia (loss of blood flow)): 2 people, 13.33%
Neuroendocrine Tumor: 2 people, 13.33%
Back Pain: 2 people, 13.33%
Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 1 person, 6.67%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 1 person, 6.67%
Muscle Spasms (muscle contraction): 1 person, 6.67%
High Blood Cholesterol: 1 person, 6.67%
Dyspnea (difficult or laboured breathing): 1 person, 6.67%
Breast Cancer: 1 person, 6.67%

* Approximation only. Some reports may have incomplete information.

Do you take Quinine and have Faeces discolored?

- Check whether Faeces discolored 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 Quinine:

Quinine (4,981 reports)

Browse all side effects of Quinine:

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 Faeces discolored:

Faeces discolored (1,249 drugs)

Browse all the conditions that are associated with Faeces discolored:

Faeces discolored (1,834 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on cinchona (the active ingredients of Quinine) and Quinine (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.