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Cystaran and Ranitidine drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Cystaran (cysteamine) and Ranitidine (ranitidine). Common drug interactions include white blood cell count decreased among females and eye irritation among males.

The phase IV clinical study analyzes what interactions people have when they take Cystaran and Ranitidine. It is created by eHealthMe based on reports of 11 people who take the same drugs from the FDA, and is updated regularly.

What is Cystaran?

Cystaran has active ingredients of cysteamine. eHealthMe is studying from 264 Cystaran users. Check the latest studies of Cystaran.

What is Ranitidine?

Ranitidine has active ingredients of ranitidine. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 234,475 Ranitidine users. Check the latest studies of Ranitidine.

On Jul, 31, 2026

11 people who take Cystaran and Ranitidine together, and have interactions are studied.

Cystaran and Ranitidine drug interactions.

What are the common drug interactions of Cystaran and Ranitidine, by gender? *:

female:

  1. White blood cell count decreased
  2. Renal failure (kidney dysfunction)
  3. Kidney infection
  4. Lacrimation increased
  5. Photophobia (extreme sensitivity to light)
  6. Red blood cell count decreased

male:

  1. Eye irritation
  2. Keratitis (eye's cornea, the front part of the eye, becomes inflamed)
  3. Lacrimation increased
  4. Ocular hyperaemia (an abnormally large amount of blood in eye)
  5. Sneezing

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

0-1:

n/a

2-9:

  1. Keratitis (eye's cornea, the front part of the eye, becomes inflamed)

10-19:

  1. Renal failure (kidney dysfunction)

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

n/a

60+:

n/a

What are the existing conditions these people have? *

  1. Cystinosis (abnormal accumulation of the amino acid cystine): 4 people, 36.36%
  2. Corneal Deposits: 4 people, 36.36%
  3. Amino Acid Metabolism Disorder: 2 people, 18.18%
  4. Keratitis (eye's cornea, the front part of the eye, becomes inflamed): 1 person, 9.09%
  5. Carnitine Deficiency: 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Cystaran and Ranitidine?

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- Predict drug outcomes for up to one year with AI
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Related studies:

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

Browse all drug interactions of Cystaran and Ranitidine:

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 Cystaran:

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 Ranitidine:

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 Cystaran 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 Ranitidine 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 cysteamine and ranitidine (the active ingredients of Cystaran and Ranitidine, respectively), and Cystaran and Ranitidine (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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