Vitamin b1 and Erythema multiforme - a phase IV clinical study of FDA data

Summary:

Erythema multiforme is reported as a side effect among people who take Vitamin b1 (thiamine), especially for people who are female, 30-39 old, also take Calcium, and have High blood pressure.

The phase IV clinical study analyzes which people have Erythema multiforme when taking Vitamin b1. It is created by eHealthMe based on reports of 4,324 people who have side effects when taking Vitamin b1 from the FDA, and is updated regularly.

What is Vitamin b1?

Vitamin b1 has active ingredients of thiamine. It is often used in fatigue. eHealthMe is studying from 4,661 Vitamin b1 users. Check the latest studies of Vitamin b1.

What is Erythema multiforme?

Erythema multiforme (a type of hypersensitivity reaction) is found to be associated with 1,707 drugs and 2,920 conditions by eHealthMe. Check the latest studies of Erythema multiforme.

On Jul, 15, 2026

4,324 people reported to have side effects when taking Vitamin b1.
Among them, 27 people (0.62%) have Erythema multiforme.

Could Vitamin b1 cause Erythema multiforme?

Among these 27 people:

What is the gender of people who have Erythema multiforme when taking Vitamin b1? *

female: 95.65 %
male: 4.35 %

What is the age of people who have Erythema multiforme when taking Vitamin b1? *

What are other drugs people take besides Vitamin b1? *

Lasix: 18 people, 66.67%
Clonazepam: 18 people, 66.67%
Fentanyl: 18 people, 66.67%
Valproic Acid: 18 people, 66.67%
Ursodiol: 18 people, 66.67%
Lactulose: 18 people, 66.67%
Xylometazoline Hydrochloride: 18 people, 66.67%
Dobutamine Hydrochloride: 18 people, 66.67%
Bricanyl: 18 people, 66.67%
Calcium: 18 people, 66.67%

What are other side effects people have besides Erythema multiforme? *

Sepsis (a severe blood infection that can lead to organ failure and death): 17 people, 62.96%
Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure): 4 people, 14.81%
Rash Macular (small, flat red spots): 3 people, 11.11%
Clostridium Test Positive: 2 people, 7.41%
Hepatic Failure (liver failure): 2 people, 7.41%
Thrombocytopenia (decrease of platelets in blood): 2 people, 7.41%
Mental Disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability): 2 people, 7.41%
Cardiogenic Shock (inadequate circulation of blood): 2 people, 7.41%
Abdominal Pain Upper: 2 people, 7.41%
Bleeding Disorders: 2 people, 7.41%

What are the existing conditions these people have? *

Vitamin B1 Deficiency: 15 people, 55.56%
Nasopharyngitis (inflammation of the nasopharynx): 15 people, 55.56%
Bronchospasm (spasm of bronchial smooth muscle producing narrowing of the bronchi): 15 people, 55.56%
Cardiac Failure: 15 people, 55.56%
Constipation: 15 people, 55.56%
Epilepsy (common and diverse set of chronic neurological disorders characterized by seizures): 15 people, 55.56%
Extrapyramidal Disorder (involuntary muscle spasms in the face and neck): 15 people, 55.56%
Flatulence (flatus expelled through the anus): 15 people, 55.56%
Gallstones (stone formation by bile component): 15 people, 55.56%
High Blood Pressure: 15 people, 55.56%

* Approximation only. Some reports may have incomplete information.

Do you take Vitamin b1 and have Erythema multiforme?

- Check whether Erythema multiforme 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 Vitamin b1:

Vitamin b1 (4,661 reports)

Browse all side effects of Vitamin b1:

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 Erythema multiforme:

Erythema multiforme (1,707 drugs)

Browse all the conditions that are associated with Erythema multiforme:

Erythema multiforme (2,920 conditions)

Related publications that referenced our studies

Tognetti L, Giorgini S, Lotti T, "Erythema multiforme-like eruption from a slimming drug preparation cutaneous adverse drug reaction", Indian dermatology online journal, 2011 Jan .
Tognetti L, Giorgini S, Lotti T, "Erythema multiforme-like eruption from a slimming drug preparation cutaneous adverse drug reaction", Indian dermatology online journal, 2011 Jan .

How the study uses the data?

The study uses data from the FDA. It is based on thiamine (the active ingredients of Vitamin b1) and Vitamin b1 (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.