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Tyr and Urticaria - a phase IV clinical study of FDA data

Summary:

Urticaria is reported as a side effect among people who take Tyr (tyrosine), especially for people who are female, 40-49 old, also take Palynziq, and have Hypothyroidism.

The phase IV clinical study analyzes which people have Urticaria when taking Tyr. It is created by eHealthMe based on reports of 634 people who have side effects when taking Tyr from the FDA, and is updated regularly.

What is Tyr?

Tyr has active ingredients of tyrosine. eHealthMe is studying from 840 Tyr users. Check the latest studies of Tyr.

What is Urticaria?

Urticaria (rash of round, red welts on the skin that itch intensely) is found to be associated with 2,612 drugs and 2,954 conditions by eHealthMe. Check the latest studies of Urticaria.

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, 26, 2026

634 people reported to have side effects when taking Tyr.
Among them, 13 people (2.05%) have Urticaria.

Could Tyr cause Urticaria?

Among these 13 people:

What is the gender of people who have Urticaria when taking Tyr? *

  • female: 100 %
  • male: 0.0 %

What is the age of people who have Urticaria when taking Tyr? *

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.0 %
  • 30-39: 0.0 %
  • 40-49: 66.67 %
  • 50-59: 16.67 %
  • 60+: 16.67 %

What are other drugs people take besides Tyr? *

  1. Palynziq: 4 people, 30.77%
  2. Glutamine: 3 people, 23.08%
  3. Epipen: 3 people, 23.08%
  4. Xolair: 3 people, 23.08%
  5. Glycine: 2 people, 15.38%
  6. Flaxseed: 2 people, 15.38%
  7. Cytomel: 2 people, 15.38%
  8. Flonase Allergy Relief: 2 people, 15.38%
  9. Citrulline: 2 people, 15.38%
  10. Fluocinonide: 2 people, 15.38%

What are other side effects people have besides Urticaria? *

  1. Itching: 5 people, 38.46%
  2. Joint Pain: 4 people, 30.77%
  3. Wheezing (a high-pitched whistling sound made while you breath): 3 people, 23.08%
  4. Depression: 3 people, 23.08%
  5. Pain: 3 people, 23.08%
  6. Abdominal Distension: 2 people, 15.38%
  7. Coeliac Artery Compression Syndrome (abdominal pain related to compression of the celiac artery): 2 people, 15.38%
  8. Hypersensitivity: 2 people, 15.38%
  9. Injection Site Erythema (redness at injection site): 2 people, 15.38%
  10. Gait Disturbance: 2 people, 15.38%

What are the existing conditions these people have? *

  1. Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 3 people, 23.08%
  2. Drowsiness: 2 people, 15.38%
  3. Osteopenia (a condition where bone mineral density is lower than normal): 1 person, 7.69%
  4. Muscle Function Loss: 1 person, 7.69%
  5. Chronic Thyroiditis (long lasting inflammation of thyroid gland): 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Tyr and have Urticaria?

- Check whether Urticaria 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 Tyr:

  • Tyr (840 reports)

Urticaria treatments and more:

How severe was Urticaria and when was it recovered:

Expand to all the drugs that have ingredients of tyrosine:

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 Tyr:

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 Urticaria:

Browse all the conditions that are associated with Urticaria:

Related publications that referenced our studies

How the study uses the data?

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

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