Questran and Taste disturbance - a phase IV clinical study of FDA data


Taste disturbance is reported only by a few people who take Questran.

The phase IV clinical study analyzes which people take Questran and have Taste disturbance. It is created by eHealthMe based on reports of 4,050 people who have side effects while taking Questran from the FDA, and is updated regularly.

Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 600+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.

On Mar, 26, 2023

4,050 people reported to have side effects when taking Questran.
Among them, 3 people (0.07%) have Taste disturbance.

What is Questran?

Questran has active ingredients of cholestyramine. It is often used in diarrhea. eHealthMe is studying from 4,132 Questran users for its effectiveness, alternative drugs and more.

What is Taste disturbance?

Taste disturbance is found to be associated with 1,001 drugs and 2 conditions by eHealthMe.

Number of Questran and Taste disturbance reports submitted per year:

Could Questran cause Taste disturbance?

Gender of people who have Taste disturbance when taking Questran *:

  • female: 66.67 %
  • male: 33.33 %

Age of people who have Taste disturbance when taking Questran *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.0 %
  • 30-39: 0.0 %
  • 40-49: 0.0 %
  • 50-59: 0.0 %
  • 60+: 100 %

Common drugs people take besides Questran *:

  1. Prevacid: 2 people, 66.67%
  2. Lopid: 2 people, 66.67%
  3. Zestril: 1 person, 33.33%
  4. Prempro: 1 person, 33.33%
  5. Cardizem Cd: 1 person, 33.33%
  6. Blocadren: 1 person, 33.33%

Common side effects people have besides Taste disturbance *:

  1. Parosmia (distortion of the sense of smell, as in smelling odours that are not present): 1 person, 33.33%
  2. Haemorrhoids (a swollen vein or group of veins in the region of the anus): 1 person, 33.33%
  3. Flatulence (flatus expelled through the anus): 1 person, 33.33%
  4. Constipation: 1 person, 33.33%

* Approximation only. Some reports may have incomplete information.

Do you take Questran and have Taste disturbance?

Check whether Taste disturbance is associated with a drug or a condition

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

Related studies

How severe was Taste disturbance and when was it recovered:

Expand to all the drugs that have ingredients of cholestyramine:

Alternative drugs to, pros and cons of Questran:

Common Questran side effects:

Browse all side effects of Questran:

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Taste disturbance treatments and more:

COVID vaccines that are related to Taste disturbance:

Common drugs associated with Taste disturbance:

All the drugs that are associated with Taste disturbance:

All the conditions that are associated with Taste disturbance:

How the study uses the data?

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

Who is eHealthMe?

With medical big data and proven AI 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 600+ 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: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on 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.

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