Multivitamin and Lymphocyte count decreased - a phase IV clinical study of FDA data

Summary:

Lymphocyte count decreased is reported as a side effect among people who take Multivitamin (ascorbic acid; biotin; cyanocobalamin; dexpanthenol; ergocalciferol; folic acid; niacinamide; pyridoxine hydrochloride; riboflavin phosphate sodium; thiamine hydrochloride; vitamin a; vitamin e), especially for people who are female, 60+ old, also take Ativan, and have Multiple sclerosis.

The phase IV clinical study analyzes which people have Lymphocyte count decreased when taking Multivitamin. It is created by eHealthMe based on reports of 79,185 people who have side effects when taking Multivitamin from the FDA, and is updated regularly.

What is Multivitamin?

Multivitamin has active ingredients of ascorbic acid; biotin; cyanocobalamin; dexpanthenol; ergocalciferol; folic acid; niacinamide; pyridoxine hydrochloride; riboflavin phosphate sodium; thiamine hydrochloride; vitamin a; vitamin e. It is often used in vitamin supplementation. eHealthMe is studying from 83,597 Multivitamin users. Check the latest studies of Multivitamin.

What is Lymphocyte count decreased?

Lymphocyte count decreased is found to be associated with 1,204 drugs and 1,336 conditions by eHealthMe. Check the latest studies of Lymphocyte count decreased.

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, 24, 2026

79,185 people reported to have side effects when taking Multivitamin.
Among them, 95 people (0.12%) have Lymphocyte count decreased.

Could Multivitamin cause Lymphocyte count decreased?

Among these 95 people:

What is the gender of people who have Lymphocyte count decreased when taking Multivitamin? *

female: 60.76 %
male: 39.24 %

What is the age of people who have Lymphocyte count decreased when taking Multivitamin? *

What are other drugs people take besides Multivitamin? *

What are other side effects people have besides Lymphocyte count decreased? *

Haemoglobin Decreased: 49 people, 51.58%
White Blood Cell Count Decreased: 43 people, 45.26%
Haematocrit Decreased: 40 people, 42.11%
Fatigue (feeling of tiredness): 38 people, 40.00%
Red Blood Cell Count Decreased: 38 people, 40.00%
Nausea (feeling of having an urge to vomit): 30 people, 31.58%
Cough: 28 people, 29.47%
Dyspnea (difficult or laboured breathing): 28 people, 29.47%
Neutrophil Count Decreased (less than normal number of neutrophil a type of blood cell): 28 people, 29.47%
Joint Pain: 27 people, 28.42%

What are the existing conditions these people have? *

Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 22 people, 23.16%
Polycythaemia Vera (blood disorder in which the bone marrow makes too many red blood cells): 18 people, 18.95%
Neuropathy Peripheral (surface nerve damage): 12 people, 12.63%
Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 12 people, 12.63%
Pelvic Pain: 12 people, 12.63%
Stress And Anxiety: 12 people, 12.63%
Muscle Spasms (muscle contraction): 12 people, 12.63%
Primary Myelofibrosis (primary disorder of the bone marrow): 12 people, 12.63%
Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 12 people, 12.63%
Depression: 12 people, 12.63%

* Approximation only. Some reports may have incomplete information.

Do you take Multivitamin and have Lymphocyte count decreased?

- Check whether Lymphocyte count decreased 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 Multivitamin:

Multivitamin (83,597 reports)

Lymphocyte count decreased treatments and more:

Lymphocyte count decreased (25,306 reports)

How severe was Lymphocyte count decreased and when was it recovered:

Lymphocyte count decreased in Multivitamin

Expand to all the drugs that have ingredients of ascorbic acid; biotin; cyanocobalamin; dexpanthenol; ergocalciferol; folic acid; niacinamide; pyridoxine hydrochloride; riboflavin phosphate sodium; thiamine hydrochloride; vitamin a; vitamin e:

Lymphocyte count decreased and drugs with ingredients of ascorbic acid; biotin; cyanocobalamin; dexpanthenol; ergocalciferol; folic acid; niacinamide; pyridoxine hydrochloride; riboflavin phosphate sodium; thiamine hydrochloride; vitamin a; vitamin e (440 reports)

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 Multivitamin:

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 Lymphocyte count decreased:

Lymphocyte count decreased (1,204 drugs)

Browse all the conditions that are associated with Lymphocyte count decreased:

Lymphocyte count decreased (1,336 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on ascorbic acid; biotin; cyanocobalamin; dexpanthenol; ergocalciferol; folic acid; niacinamide; pyridoxine hydrochloride; riboflavin phosphate sodium; thiamine hydrochloride; vitamin a; vitamin e (the active ingredients of Multivitamin) and Multivitamin (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.