Cobalamin and Intestinal obstruction - a phase IV clinical study of FDA data

Summary:

Intestinal obstruction is reported as a side effect among people who take Cobalamin (vitamin b12), especially for people who are male, 60+ old, have been taking the drug for 1 - 6 months also take Dexamethasone Sodium Phosphate, and have Crohn's disease.

The phase IV clinical study analyzes which people have Intestinal obstruction when taking Cobalamin. It is created by eHealthMe based on reports of 3,345 people who have side effects when taking Cobalamin from the FDA, and is updated regularly.

What is Cobalamin?

Cobalamin has active ingredients of vitamin b12. eHealthMe is studying from 3,429 Cobalamin users. Check the latest studies of Cobalamin.

What is Intestinal obstruction?

Intestinal obstruction is found to be associated with 1,884 drugs and 2,619 conditions by eHealthMe. Check the latest studies of Intestinal obstruction.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Sep, 02, 2026

3,345 people reported to have side effects when taking Cobalamin.
Among them, 40 people (1.2%) have Intestinal obstruction.

Could Cobalamin cause Intestinal obstruction?

Among these 40 people:

How long have people been on Cobalamin when they have Intestinal obstruction? *

What is the gender of people who have Intestinal obstruction when taking Cobalamin? *

female: 44.12 %
male: 55.88 %

What is the age of people who have Intestinal obstruction when taking Cobalamin? *

What are other drugs people take besides Cobalamin? *

Lyrica: 5 people, 12.50%
Dexamethasone Sodium Phosphate: 5 people, 12.50%
Lactulose: 4 people, 10.00%
Adderall: 4 people, 10.00%
Vitamin D3: 4 people, 10.00%
Vitamin C: 4 people, 10.00%
Dexamethasone: 4 people, 10.00%
Esomeprazole Magnesium: 4 people, 10.00%
Humira: 4 people, 10.00%
Ceftazidime: 4 people, 10.00%

What are other side effects people have besides Intestinal obstruction? *

Appetite - Decreased (decreased appetite occurs when you have a reduced desire to eat): 7 people, 17.50%
Malaise (a feeling of general discomfort or uneasiness): 7 people, 17.50%
Fever: 6 people, 15.00%
Nausea (feeling of having an urge to vomit): 6 people, 15.00%
Thrombocytopenia (decrease of platelets in blood): 5 people, 12.50%
Weight Decreased: 4 people, 10.00%
Abdominal Pain: 4 people, 10.00%
Joint Pain: 4 people, 10.00%
Nausea And Vomiting: 4 people, 10.00%
Anaemia (lack of blood): 4 people, 10.00%

What are the existing conditions these people have? *

Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 6 people, 15.00%
Myelodysplastic Syndrome (a group of conditions that occur when the blood-forming cells in the bone marrow are damaged): 4 people, 10.00%
Anaemia (lack of blood): 3 people, 7.50%
Osteoporosis (bones weak and more likely to break): 3 people, 7.50%
Multiple Myeloma (cancer of the plasma cells): 3 people, 7.50%
Chronic Myeloid Leukaemia (long lasting type of cancer that starts in the blood-forming cells of the bone marrow and invades the blood): 3 people, 7.50%
Iron Overload: 3 people, 7.50%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 5.00%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 2 people, 5.00%
Type 2 Diabetes: 2 people, 5.00%

* Approximation only. Some reports may have incomplete information.

Do you take Cobalamin and have Intestinal obstruction?

- Check whether Intestinal obstruction is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, long term effects of, and alternative drugs to Cobalamin:

Cobalamin (3,429 reports)

Browse all side effects of Cobalamin:

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 the drugs that are associated with Intestinal obstruction:

Intestinal obstruction (1,884 drugs)

Browse all the conditions that are associated with Intestinal obstruction:

Intestinal obstruction (2,619 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on vitamin b12 (the active ingredients of Cobalamin) and Cobalamin (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.

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.