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

Summary:

Drug interactions are reported among people who take Lansoprazole (lansoprazole) and Questran (cholestyramine). Common drug interactions include body temperature decreased among females and renal failure among males.

The phase IV clinical study analyzes what interactions people have when they take Lansoprazole and Questran. It is created by eHealthMe based on reports of 70 people who take the same drugs from the FDA, and is updated regularly.

What is Lansoprazole?

Lansoprazole has active ingredients of lansoprazole. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 129,663 Lansoprazole users. Check the latest studies of Lansoprazole.

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.



On Aug, 10, 2026

70 people who take Lansoprazole and Questran together, and have interactions are studied.

Lansoprazole and Questran drug interactions.

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

female:

  1. Body temperature decreased
  2. Dizziness
  3. Fatigue (feeling of tiredness)
  4. Heart rate decreased
  5. Infusion related reaction
  6. Labyrinthitis (inflammation of the labyrinth or inner ear)
  7. Lung squamous cell carcinoma stage ii (lung cancer has spread to lymph nodes on the same side of the chest as the tumour. the lymph nodes with cancer are within the lung or near the bronchus)
  8. Myoclonic jerks (involuntary twitching of a muscle or group of muscles)
  9. Vision blurred
  10. Oesophagitis ulcerative (inflammation of oesophagus with multiple ulcers)

male:

  1. Renal failure (kidney dysfunction)
  2. Depression
  3. Arthralgia (joint pain)
  4. Atelectasis (partial or complete collapse of the lung)
  5. Balance disorder
  6. Biliary dilatation
  7. Bone lesion (bone with abnormalities. bone lesions can result from growth formations, infections, or injuries)
  8. Bone marrow oedema (inflammation that causes much than the needed fluid in a bone)
  9. Bone pain
  10. Carcinoid syndrome (syndrome includes flushing and diarrhoea, and, less frequently, heart failure and bronchoconstriction)

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

0-1:

n/a

2-9:

n/a

10-19:

  1. Acute abdomen

20-29:

  1. Depression
  2. Rectal haemorrhage (bleeding from anus)
  3. Drug resistance (reduction in effectiveness of a drug)

30-39:

  1. Oesophagitis ulcerative (inflammation of oesophagus with multiple ulcers)
  2. Dissociation
  3. Seizure (abnormal excessive or synchronous neuronal activity in the brain)
  4. Syncope (loss of consciousness with an inability to maintain postural tone)

40-49:

  1. Bacteria sputum identified
  2. Blood cholesterol increased
  3. Blood immunoglobulin a increased
  4. Blood immunoglobulin g increased
  5. Blood lactate dehydrogenase increased
  6. Fibrin d dimer increased
  7. Nausea (feeling of having an urge to vomit)
  8. Nephrosclerosis (hardening of the kidney due to renovascular disease)
  9. Nephrotic syndrome (kidney disease with proteinuria, hypoalbuminemia, and oedema)
  10. Occult blood positive

50-59:

  1. Hepatitis cholestatic (flow of bile from the liver is slowed or blocked)
  2. Drug ineffective

60+:

  1. Dizziness
  2. Renal failure (kidney dysfunction)
  3. Arthralgia (joint pain)
  4. Atelectasis (partial or complete collapse of the lung)
  5. Balance disorder
  6. Biliary dilatation
  7. Bone lesion (bone with abnormalities. bone lesions can result from growth formations, infections, or injuries)
  8. Bone marrow oedema (inflammation that causes much than the needed fluid in a bone)
  9. Bone pain
  10. Carcinoid syndrome (syndrome includes flushing and diarrhoea, and, less frequently, heart failure and bronchoconstriction)

What are the existing conditions these people have? *

  1. High Blood Pressure: 13 people, 18.57%
  2. Microscopic Polyangiitis (inflammation involving multiple blood or lymph small-vessel): 10 people, 14.29%
  3. Pain: 6 people, 8.57%
  4. Osteoporosis (bones weak and more likely to break): 5 people, 7.14%
  5. Multiple Myeloma (cancer of the plasma cells): 5 people, 7.14%
  6. Depression: 5 people, 7.14%
  7. Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 5 people, 7.14%
  8. Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 5 people, 7.14%
  9. Stress And Anxiety: 4 people, 5.71%
  10. Short-Bowel Syndrome (a condition in which the body cannot absorb enough fluids and nutrients because part of the small intestine is missing): 4 people, 5.71%

* Approximation only. Some reports may have incomplete information.

Do you take Lansoprazole and Questran?

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Related studies:

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

Browse all drug interactions of Lansoprazole and 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

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 Lansoprazole:

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 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 interactions between Lansoprazole 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 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

How the study uses the data?

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

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



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