How effective is Vitamin B12 for Fatigue? (a real world drug study)

Summary:

Overall ratings: 3/5
Long term ratings: 3.3/5

This is a phase IV clinical study of how effective Vitamin b12 (cobalamin) is for Fatigue and for what kind of people. The study is created by eHealthMe from 58 Vitamin b12 users and is updated continuously.

What is Vitamin b12?

Vitamin b12 has active ingredients of cobalamin. It is often used in vitamin b12 deficiency. eHealthMe is studying from 121,681 Vitamin b12 users. Check the latest studies of Vitamin b12.

What is Fatigue?

Fatigue (feeling of tiredness) is found to be associated with 4,026 drugs and 6,379 conditions by eHealthMe. Check the latest studies of Fatigue.


On Jul, 01, 2026

58 people are studied for taking Vitamin b12 in Fatigue

Overall effectiveness (number of people):

Does Vitamin b12 work for your Fatigue (overall)?

Long term (1+ years) effectiveness (number of people):

Does Vitamin b12 work for your Fatigue (long term)?

Vitamin b12 effectiveness for Fatigue (number of people):

Overall:
  • not at all: 1
  • somewhat: 22
  • moderate: 19
  • high: 10
  • very high: 6
Long Term:
  • not at all: 0
  • somewhat: 5
  • moderate: 10
  • high: 7
  • very high: 3

Gender of people who take Vitamin b12 for Fatigue *:

  • female: 70.69 %
  • male: 29.31 %

Age of people who take Vitamin b12 for Fatigue *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 1.72 %
  • 20-29: 17.24 %
  • 30-39: 13.79 %
  • 40-49: 27.59 %
  • 50-59: 13.79 %
  • 60+: 25.86 %

Who find Vitamin B12 more effective for Fatigue?

Gender of people who take Vitamin b12 for Fatigue *:

  • female: 81.25 %
  • male: 18.75 %

Age of people who take Vitamin b12 for Fatigue *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 18.75 %
  • 30-39: 12.5 %
  • 40-49: 31.25 %
  • 50-59: 18.75 %
  • 60+: 18.75 %

* Approximation only. Some reports may have incomplete information.

Do you take Vitamin b12?

- You can start a phase IV clinical trial to monitor Vitamin b12 safety and effectiveness.

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.

Related publications that referenced our studies:

Related studies

Alternative drugs to, pros and cons of:

Treatments, associated drugs and conditions:

How the study uses the data?

The study is based on cobalamin (the active ingredients of Vitamin b12) and Vitamin b12 (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 neither.

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.



Recent studies on eHealthMe: