Cyanocobalamin and Mouth ulcers - a phase IV clinical study of FDA data


Mouth ulcers is found among people who take Cyanocobalamin, especially for people who are female, 60+ old.

The phase IV clinical study analyzes which people take Cyanocobalamin and have Mouth ulcers. It is created by eHealthMe based on reports of 6,293 people who have side effects when taking Cyanocobalamin from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

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 Feb, 07, 2023

6,293 people reported to have side effects when taking Cyanocobalamin.
Among them, 19 people (0.3%) have Mouth ulcers.

What is Cyanocobalamin?

Cyanocobalamin has active ingredients of cyanocobalamin. It is often used in vitamin b12 deficiency. eHealthMe is studying from 6,462 Cyanocobalamin users for its effectiveness, alternative drugs and more.

What is Mouth ulcers?

Mouth ulcers is found to be associated with 2,595 drugs and 2,020 conditions by eHealthMe.

Number of Cyanocobalamin and Mouth ulcers reports submitted per year:

Could Cyanocobalamin cause Mouth ulcers?

Gender of people who have Mouth ulcers when taking Cyanocobalamin *:

  • female: 61.11 %
  • male: 38.89 %

Age of people who have Mouth ulcers when taking Cyanocobalamin *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.0 %
  • 30-39: 0.0 %
  • 40-49: 17.65 %
  • 50-59: 11.76 %
  • 60+: 70.59 %

Common drugs people take besides Cyanocobalamin *:

  1. Folic Acid: 9 people, 47.37%
  2. Prednisone: 7 people, 36.84%
  3. Vitamin D3: 6 people, 31.58%
  4. Rosuvastatin Calcium: 4 people, 21.05%
  5. Lyrica: 3 people, 15.79%
  6. Lomotil: 3 people, 15.79%
  7. Oxycodone Hydrochloride: 3 people, 15.79%
  8. Methotrexate: 3 people, 15.79%
  9. Carvedilol: 3 people, 15.79%
  10. Pregabalin: 3 people, 15.79%

Common side effects people have besides Mouth ulcers *:

  1. Fatigue (feeling of tiredness): 7 people, 36.84%
  2. Diarrhea: 6 people, 31.58%
  3. Joint Pain: 6 people, 31.58%
  4. Weight Decreased: 6 people, 31.58%
  5. Urinary Tract Infection: 5 people, 26.32%
  6. Rashes (redness): 5 people, 26.32%
  7. Nausea And Vomiting: 5 people, 26.32%
  8. Nausea (feeling of having an urge to vomit): 5 people, 26.32%
  9. Canker Sores (painful, open sore in the mouth): 4 people, 21.05%
  10. Pneumonia: 4 people, 21.05%

Common conditions people have *:

  1. Nausea (feeling of having an urge to vomit): 4 people, 21.05%
  2. Nausea And Vomiting: 4 people, 21.05%
  3. Non-Hodgkin's Lymphoma (malignant (cancer) cells form in the lymph system): 3 people, 15.79%
  4. Pemphigus (any of several acute or chronic skin diseases characterized by groups of itching blisters): 3 people, 15.79%
  5. Crohn's Disease (condition that causes inflammation of the gastrointestinal tract): 2 people, 10.53%
  6. Immunodeficiency Common Variable: 2 people, 10.53%
  7. Joint Pain: 2 people, 10.53%
  8. Lung Cancer - Non-Small Cell (lung cancer): 2 people, 10.53%
  9. Multiple Myeloma (cancer of the plasma cells): 2 people, 10.53%
  10. Colon Cancer Stage Iii: 2 people, 10.53%

* Approximation only. Some reports may have incomplete information.

Do you take Cyanocobalamin and have Mouth ulcers?

Check whether Mouth ulcers 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.

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Alternative drugs to, pros and cons of Cyanocobalamin:

Common Cyanocobalamin side effects:

Browse all side effects of Cyanocobalamin:

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Mouth ulcers treatments and more:

COVID vaccines that are related to Mouth ulcers:

Common drugs associated with Mouth ulcers:

All the drugs that are associated with Mouth ulcers:

Common conditions associated with Mouth ulcers:

All the conditions that are associated with Mouth ulcers:

How the study uses the data?

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