Synthroid and Trelstar drug interactions - a phase IV clinical study of FDA data
Summary:
Drug interactions are reported among people who take Synthroid (levothyroxine sodium) and Trelstar (triptorelin pamoate). Common drug interactions include cough among females and dizziness among males.
The phase IV clinical study analyzes what interactions people have when they take Synthroid and Trelstar. It is created by eHealthMe based on reports of 24 people who take the same drugs 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 249,202 Synthroid users. Check the latest studies of Synthroid.
What is Trelstar?
Trelstar has active ingredients of triptorelin pamoate. eHealthMe is studying from 1,506 Trelstar users. Check the latest studies of Trelstar.
24 people who take Synthroid and Trelstar together, and have interactions are studied.

What are the common drug interactions of Synthroid and Trelstar, by gender? *:
female:
- Cough
- Headache (pain in head)
- Malaise (a feeling of general discomfort or uneasiness)
- Nasopharyngitis (inflammation of the nasopharynx)
- Stress
- Vomiting
male:
- Dizziness
- Fatigue (feeling of tiredness)
- Muscular weakness (muscle weakness)
- Myalgia (muscle pain)
- Nausea (feeling of having an urge to vomit)
- Swelling
- Arthralgia (joint pain)
- Bone pain
- Cellulitis (infection under the skin)
- Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
What are the common drug interactions of Synthroid and Trelstar, by age (0-1 to 60+)? *:
0-1:
n/a
2-9:
n/a
10-19:
n/a
20-29:
n/a
30-39:
n/a
40-49:
n/a
50-59:
n/a
60+:
- Dizziness
- Fatigue (feeling of tiredness)
- Fall
- Quality of life decreased
- Tremor (trembling or shaking movements in one or more parts of your body)
- Weight decreased
- Arthralgia (joint pain)
- Chest pain
- Cough
- Disease progression
What are the existing conditions these people have? *
- Prostate Cancer: 13 people, 54.17%
- Prostate Cancer Metastatic: 3 people, 12.50%
- Multiple Myeloma (cancer of the plasma cells): 2 people, 8.33%
* Approximation only. Some reports may have incomplete information.
Do you take Synthroid and Trelstar?
- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously
Related studies:
Effectiveness of, side effects of, and alternative drugs to the 2 drugs:
Browse all drug interactions of Synthroid and Trelstar:
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 zSub-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 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 zBrowse all side effects of Trelstar:
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 zBrowse all interactions between Synthroid and drugs from A to Z:
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 zBrowse all interactions between Trelstar and drugs from A to Z:
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 zHow the study uses the data?
The study uses data from the FDA. It is based on levothyroxine sodium and triptorelin pamoate (the active ingredients of Synthroid and Trelstar, respectively), and Synthroid and Trelstar (the brand names). 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.
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