Synthroid and Thyroide - a phase IV clinical study of FDA data

Summary:

Thyroide is reported as a side effect among people who take Synthroid (levothyroxine sodium), especially for people who are female, 60+ old, have been taking the drug for 10+ years also take Lipitor, and have Rheumatoid arthritis.

The phase IV clinical study analyzes which people have Thyroide when taking Synthroid. It is created by eHealthMe based on reports of 237,758 people who have side effects when taking Synthroid from the FDA, and is updated regularly.

What is Synthroid?

Synthroid has active ingredients of levothyroxine sodium. It is often used in hypothyroidism. eHealthMe is studying from 249,168 Synthroid users. Check the latest studies of Synthroid.

What is Thyroide?

Thyroide is found to be associated with 1,232 drugs and 1,567 conditions by eHealthMe. Check the latest studies of Thyroide.

On Aug, 30, 2025

237,758 people reported to have side effects when taking Synthroid.
Among them, 2,470 people (1.04%) have Thyroide.

Among these 2,470 people:

How long have people been on Synthroid when they have Thyroide? *

What is the gender of people who have Thyroide when taking Synthroid? *

female: 88.16 %
male: 11.84 %

What is the age of people who have Thyroide when taking Synthroid? *

What are other drugs people take besides Synthroid? *

What are other side effects people have besides Thyroide? *

Fatigue (feeling of tiredness): 680 people, 27.53%
Pain: 464 people, 18.79%
High Blood Pressure: 440 people, 17.81%
Weight Decreased: 400 people, 16.19%
Joint Pain: 375 people, 15.18%
Weakness: 366 people, 14.82%
Diarrhea: 366 people, 14.82%
Headache (pain in head): 352 people, 14.25%
Weight Increased: 327 people, 13.24%
Stress And Anxiety: 324 people, 13.12%

What are the existing conditions these people have? *

Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 250 people, 10.12%
High Blood Pressure: 207 people, 8.38%
High Blood Cholesterol: 171 people, 6.92%
Depression: 105 people, 4.25%
Pain: 103 people, 4.17%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 97 people, 3.93%
Osteoporosis (bones weak and more likely to break): 88 people, 3.56%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 87 people, 3.52%
Asthma: 78 people, 3.16%
Stress And Anxiety: 71 people, 2.87%

* Approximation only. Some reports may have incomplete information.

Do you take Synthroid and have Thyroide?

- Check whether Thyroide 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 Synthroid:

Synthroid (249,168 reports)

Thyroide treatments and more:

Thyroide (69,452 reports)

Common Synthroid side effects:

Browse all side effects of Synthroid:

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

Common drugs associated with Thyroide:

Browse all the drugs that are associated with Thyroide:

Thyroide (1,232 drugs)

Common conditions associated with Thyroide:

Rheumatoid arthritis aggravated: 1,901 reports
Arthritis - rheumatoid: 1,897 reports
Multiple sclerosis: 1,590 reports
High blood pressure: 1,297 reports
Thyroid disorder: 1,022 reports
Thyroid function test abnormal: 1,020 reports
Under active thyroid: 1,006 reports
Blood cholesterol abnormal: 848 reports
High blood cholesterol and triglycerides: 844 reports
Lipoprotein test: 797 reports

Browse all the conditions that are associated with Thyroide:

Thyroide (1,567 conditions)

Drugs similar to Synthroid and Thyroide :

How the study uses the data?

The study uses data from the FDA. It is based on levothyroxine sodium (the active ingredients of Synthroid) and Synthroid (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.