Questran and Demerol drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Questran (cholestyramine) and Demerol (meperidine hydrochloride). Common drug interactions include musculoskeletal chest pain among females and blood creatine phosphokinase mb increased among males.

The phase IV clinical study analyzes what interactions people have when they take Questran and Demerol. It is created by eHealthMe based on reports of 14 people who take the same drugs from the FDA, and is updated regularly.

What is Questran?

Questran has active ingredients of cholestyramine. It is often used in diarrhea. eHealthMe is studying from 4,490 Questran users. Check the latest studies of Questran.

What is Demerol?

Demerol has active ingredients of meperidine hydrochloride. It is often used in pain. eHealthMe is studying from 12,706 Demerol users. Check the latest studies of Demerol.



On Jul, 14, 2026

14 people who take Questran and Demerol together, and have interactions are studied.

Questran and Demerol drug interactions.

What are the common drug interactions of Questran and Demerol, by gender? *:

female:

  1. Musculoskeletal chest pain (pain in chest muscle or nerve or bones)
  2. Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves)
  3. Myalgia (muscle pain)
  4. Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
  5. Myocardial ischaemia (the blood flow through one or more of the blood vessels that lead to heart (coronary arteries) is decreased)
  6. Pain in extremity
  7. Arthralgia (joint pain)
  8. Depression
  9. Drug addiction
  10. Fall

male:

  1. Blood creatine phosphokinase mb increased
  2. Cardiac enzymes increased
  3. Disease progression
  4. Heart rate increased
  5. Intraventricular haemorrhage (intraventricular bleeding)
  6. Nausea (feeling of having an urge to vomit)
  7. Neuritis (inflammation of nerve)
  8. Pyrexia (fever)
  9. Rash
  10. Sepsis (a severe blood infection that can lead to organ failure and death)

What are the common drug interactions of Questran and Demerol, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

  1. Bipolar disorder (mood disorder)
  2. Dependence
  3. Depression
  4. Drug abuser
  5. Drug addiction
  6. Drug withdrawal syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation)
  7. Psychotic disorder

40-49:

  1. Blood creatine phosphokinase mb increased
  2. Cardiac enzymes increased
  3. Chest pain
  4. Chronic kidney disease
  5. Haemorrhagic stroke (stroke caused by the rupture of a blood vessel in the brain)
  6. Intraventricular haemorrhage (intraventricular bleeding)
  7. Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
  8. Sinus tachycardia (a heart rhythm with elevated rate of impulses originating from the sinoatrial node)

50-59:

  1. Nausea (feeling of having an urge to vomit)
  2. Neck pain
  3. Neoplasm (tumour)
  4. Neuritis (inflammation of nerve)
  5. Obesity (having too much body fat)
  6. Oedema peripheral (superficial swelling)
  7. Cardiac disorder
  8. Chest pain
  9. Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
  10. Pyrexia (fever)

60+:

  1. Pain in extremity
  2. Arthralgia (joint pain)
  3. Impaired healing
  4. Injury
  5. Intervertebral disc protrusion (spinal disc protrusion)
  6. Ligament disorder (disease of ligament)
  7. Nausea (feeling of having an urge to vomit)
  8. Precancerous skin lesion
  9. Rash
  10. Spinal column stenosis (narrowing of spinal column)

What are the existing conditions these people have? *

  1. Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 5 people, 35.71%
  2. Nausea (feeling of having an urge to vomit): 3 people, 21.43%
  3. Oesophageal Candidiasis (fungal infection of oesophagus): 2 people, 14.29%
  4. Stress And Anxiety: 1 person, 7.14%
  5. Amyotrophic Lateral Sclerosis (nervous system disease that attacks nerve cells called neurons in your brain and spinal cord): 1 person, 7.14%
  6. Arrhythmias (irregular heartbeat): 1 person, 7.14%
  7. Birth Control: 1 person, 7.14%
  8. Cardiac Failure Congestive: 1 person, 7.14%
  9. Chest Pain: 1 person, 7.14%
  10. Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 1 person, 7.14%

* Approximation only. Some reports may have incomplete information.

Do you take Questran and Demerol?

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Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Questran and Demerol:

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

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Questran:

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 side effects of Demerol:

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 interactions between Questran and drugs from A to Z:

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 interactions between Demerol and drugs from A to Z:

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

How the study uses the data?

The study uses data from the FDA. It is based on cholestyramine and meperidine hydrochloride (the active ingredients of Questran and Demerol, respectively), and Questran and Demerol (the brand names). 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.

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