B12 and Dacogen drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take B12 (cobalamin) and Dacogen (decitabine). Common drug interactions include death among females and haemoglobin decreased among males.

The phase IV clinical study analyzes what interactions people have when they take B12 and Dacogen. It is created by eHealthMe based on reports of 30 people who take the same drugs from the FDA, and is updated regularly.

What is B12?

B12 has active ingredients of cobalamin. It is often used in vitamin b12 deficiency. eHealthMe is studying from 121,894 B12 users. Check the latest studies of B12.

What is Dacogen?

Dacogen has active ingredients of decitabine. eHealthMe is studying from 1,541 Dacogen users. Check the latest studies of Dacogen.



On Jul, 09, 2026

30 people who take B12 and Dacogen together, and have interactions are studied.

B12 and Dacogen drug interactions.

What are the common drug interactions of B12 and Dacogen, by gender? *:

female:

  1. Death
  2. Abdominal discomfort
  3. Acute myeloid leukaemia (acute cancer in which the bone marrow makes abnormal myeloblasts)
  4. Blood disorder
  5. Bone marrow reticulin fibrosis (thickening and scarring of bone marrow reticulin)
  6. Drug ineffective
  7. Hellp syndrome (life-threatening pregnancy complication)
  8. Hospitalisation
  9. Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets)
  10. Vomiting

male:

  1. Haemoglobin decreased
  2. Platelet count decreased
  3. Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
  4. Discomfort
  5. Escherichia urinary tract infection (urinary tract infection by escherichia coli)
  6. Fall
  7. Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
  8. General physical health deterioration (weak health status)
  9. Haemorrhoids (a swollen vein or group of veins in the region of the anus)
  10. Hospitalisation

What are the common drug interactions of B12 and Dacogen, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

  1. Death

60+:

  1. Death
  2. White blood cell count decreased
  3. Discomfort
  4. Drug ineffective
  5. Fall
  6. Febrile neutropenia (fever with reduced white blood cells)
  7. Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
  8. General physical health deterioration (weak health status)
  9. Haemorrhoids (a swollen vein or group of veins in the region of the anus)
  10. Hellp syndrome (life-threatening pregnancy complication)

What are the existing conditions these people have? *

  1. Acute Myeloid Leukaemia (acute cancer in which the bone marrow makes abnormal myeloblasts): 16 people, 53.33%
  2. Myelodysplastic Syndrome (a group of conditions that occur when the blood-forming cells in the bone marrow are damaged): 8 people, 26.67%
  3. Nausea (feeling of having an urge to vomit): 4 people, 13.33%
  4. Nasal Congestion (blockage of the nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels): 3 people, 10.00%
  5. Leukaemia (blood or bone marrow cancer): 3 people, 10.00%
  6. Hyperlipidaemia (presence of excess lipids in the blood): 3 people, 10.00%
  7. High Blood Pressure: 3 people, 10.00%
  8. Essential Thrombocythaemia (chronic blood cancer): 3 people, 10.00%
  9. Pain: 2 people, 6.67%
  10. Multiple Myeloma (cancer of the plasma cells): 2 people, 6.67%

* Approximation only. Some reports may have incomplete information.

Do you take B12 and Dacogen?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously



Related studies:

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

Browse all drug interactions of B12 and Dacogen:

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 B12:

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 Dacogen:

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 B12 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 Dacogen 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 cobalamin and decitabine (the active ingredients of B12 and Dacogen, respectively), and B12 and Dacogen (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.



Recent studies on eHealthMe: