Se and Hypothyroidism - a phase IV clinical study of FDA data

Summary:

Hypothyroidism is reported as a side effect among people who take Se (selenium), especially for people who are female, 50-59 old, have been taking the drug for 6 - 12 months also take Synthroid, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Hypothyroidism when taking Se. It is created by eHealthMe based on reports of 5,331 people who have side effects when taking Se from the FDA, and is updated regularly.

What is Se?

Se has active ingredients of selenium. eHealthMe is studying from 5,604 Se users. Check the latest studies of Se.

What is Hypothyroidism?

Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development) is found to be associated with 1,616 drugs and 2,600 conditions by eHealthMe. Check the latest studies of Hypothyroidism.



On Jul, 22, 2026

5,331 people reported to have side effects when taking Se.
Among them, 35 people (0.66%) have Hypothyroidism.

Could Se cause Hypothyroidism?

Among these 35 people:

How long have people been on Se when they have Hypothyroidism? *

  • < 1 month: 0.0 %
  • 1 - 6 months: 50 %
  • 6 - 12 months: 50 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

What is the gender of people who have Hypothyroidism when taking Se? *

  • female: 81.82 %
  • male: 18.18 %

What is the age of people who have Hypothyroidism when taking Se? *

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.0 %
  • 30-39: 12.5 %
  • 40-49: 12.5 %
  • 50-59: 58.33 %
  • 60+: 16.67 %

What are other drugs people take besides Se? *

  1. Synthroid: 20 people, 57.14%
  2. Magnesium: 16 people, 45.71%
  3. Biotin: 14 people, 40.00%
  4. Lasix: 12 people, 34.29%
  5. Amoxicillin: 11 people, 31.43%
  6. Claritin: 11 people, 31.43%
  7. Xanax: 11 people, 31.43%
  8. Hydrochlorothiazide: 11 people, 31.43%
  9. Premarin: 11 people, 31.43%
  10. Furosemide: 11 people, 31.43%

What are other side effects people have besides Hypothyroidism? *

  1. Joint Pain: 16 people, 45.71%
  2. Neck Pain: 16 people, 45.71%
  3. Pain: 16 people, 45.71%
  4. Stress And Anxiety: 15 people, 42.86%
  5. Osteoarthritis (a joint disease caused by cartilage loss in a joint): 15 people, 42.86%
  6. Chest Pain: 14 people, 40.00%
  7. Arrhythmias (irregular heartbeat): 14 people, 40.00%
  8. High Blood Cholesterol: 13 people, 37.14%
  9. Depression: 13 people, 37.14%
  10. Muscle Strain (an injury to a muscle in which the muscle fibres tear): 12 people, 34.29%

What are the existing conditions these people have? *

  1. Multiple Myeloma (cancer of the plasma cells): 12 people, 34.29%
  2. Osteopenia (a condition where bone mineral density is lower than normal): 4 people, 11.43%
  3. Migraine (headache): 4 people, 11.43%
  4. Pain: 4 people, 11.43%
  5. Urinary Tract Infection: 3 people, 8.57%
  6. Hypersensitivity: 3 people, 8.57%
  7. Inflammation: 3 people, 8.57%
  8. Osteoporosis (bones weak and more likely to break): 3 people, 8.57%
  9. Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 2 people, 5.71%
  10. Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 5.71%

* Approximation only. Some reports may have incomplete information.

Do you take Se and have Hypothyroidism?

- Check whether Hypothyroidism 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 Se:

  • Se (5,604 reports)

Hypothyroidism treatments and more:

How severe was Hypothyroidism and when was it recovered:

Expand to all the drugs that have ingredients of selenium:

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 Se:

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 Hypothyroidism:

Browse all the conditions that are associated with Hypothyroidism:

Related publications that referenced our studies


How the study uses the data?

The study uses data from the FDA. It is based on selenium (the active ingredients of Se) and Se (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.



Recent studies on eHealthMe: