Tecfidera and Hypovitaminosis - a phase IV clinical study of FDA data

Summary:

Hypovitaminosis is reported as a side effect among people who take Tecfidera (dimethyl fumarate), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Proair Hfa, and have Abdominal pain upper.

The phase IV clinical study analyzes which people have Hypovitaminosis when taking Tecfidera. It is created by eHealthMe based on reports of 129,391 people who have side effects when taking Tecfidera from the FDA, and is updated regularly.

What is Tecfidera?

Tecfidera has active ingredients of dimethyl fumarate. It is often used in multiple sclerosis. eHealthMe is studying from 129,627 Tecfidera users. Check the latest studies of Tecfidera.

What is Hypovitaminosis?

Hypovitaminosis (any of several diseases caused by deficiency of one or more vitamins) is found to be associated with 249 drugs and 374 conditions by eHealthMe. Check the latest studies of Hypovitaminosis.

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 Aug, 31, 2026

129,391 people reported to have side effects when taking Tecfidera.
Among them, 12 people (0.01%) have Hypovitaminosis.

Among these 12 people:

How long have people been on Tecfidera when they have Hypovitaminosis? *

What is the gender of people who have Hypovitaminosis when taking Tecfidera? *

female: 91.67 %
male: 8.33 %

What is the age of people who have Hypovitaminosis when taking Tecfidera? *

What are other drugs people take besides Tecfidera? *

What are other side effects people have besides Hypovitaminosis? *

Rashes (redness): 5 people, 41.67%
Hypoaesthesia (reduced sense of touch or sensation): 4 people, 33.33%
Drug Ineffective: 4 people, 33.33%
Muscle Spasms (muscle contraction): 4 people, 33.33%
Memory Loss: 4 people, 33.33%
Weakness: 4 people, 33.33%
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect): 3 people, 25.00%
Malaise (a feeling of general discomfort or uneasiness): 3 people, 25.00%
Rickets (softening of bones): 3 people, 25.00%
Gait Disturbance: 3 people, 25.00%

What are the existing conditions these people have? *

Muscle Spasms (muscle contraction): 1 person, 8.33%
Insomnia (sleeplessness): 1 person, 8.33%
Headache (pain in head): 1 person, 8.33%
Gastrointestinal Disorder (functional problems of gastrointestinal tract): 1 person, 8.33%
Gastric Disorder (disease of stomach): 1 person, 8.33%
Abdominal Pain Upper: 1 person, 8.33%

* Approximation only. Some reports may have incomplete information.

Do you take Tecfidera and have Hypovitaminosis?

- Check whether Hypovitaminosis 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 Tecfidera:

Tecfidera (129,627 reports)

Hypovitaminosis treatments and more:

Hypovitaminosis (6,132 reports)

Browse all side effects of Tecfidera:

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 Hypovitaminosis:

Hypovitaminosis (249 drugs)

Browse all the conditions that are associated with Hypovitaminosis:

Hypovitaminosis (374 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on dimethyl fumarate (the active ingredients of Tecfidera) and Tecfidera (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.