Penicillin and Myositis - a phase IV clinical study of FDA data


Myositis is reported only by a few people who take Penicillin.

The phase IV clinical study analyzes which people take Penicillin and have Myositis. It is created by eHealthMe based on reports of 6,617 people who have side effects while taking Penicillin from the FDA, and is updated regularly.

Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 600+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.

On Nov, 26, 2022

6,617 people reported to have side effects when taking Penicillin.
Among them, 3 people (0.05%) have Myositis.

What is Penicillin?

Penicillin has active ingredients of penicillin g potassium. It is often used in strep throat. eHealthMe is studying from 7,207 Penicillin users for its effectiveness, alternative drugs and more.

What is Myositis?

Myositis (inflammation of the muscles) is found to be associated with 1,671 drugs and 1,057 conditions by eHealthMe.

Number of Penicillin and Myositis reports submitted per year:

Could Penicillin cause Myositis?

Gender of people who have Myositis when taking Penicillin *:

  • female: 33.33 %
  • male: 66.67 %

Age of people who have Myositis when taking Penicillin *:

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

Common drugs people take besides Penicillin *:

  1. Zometa: 2 people, 66.67%
  2. Velcade: 2 people, 66.67%
  3. Aredia: 2 people, 66.67%
  4. Travoprost: 2 people, 66.67%
  5. Timolol: 2 people, 66.67%
  6. Tamsulosin: 2 people, 66.67%
  7. Aspirin: 2 people, 66.67%
  8. Cilostazol: 2 people, 66.67%
  9. Oxycontin: 2 people, 66.67%
  10. Oxycodone: 2 people, 66.67%

Common side effects people have besides Myositis *:

  1. Abdominal Pain: 3 people, 100.00%
  2. Depression: 3 people, 100.00%
  3. Fatigue (feeling of tiredness): 3 people, 100.00%
  4. Injury: 3 people, 100.00%
  5. Age-Related Macular Degeneration: 2 people, 66.67%
  6. Abdominal Pain Upper: 2 people, 66.67%
  7. Emphysema (chronic respiratory disease - over inflation of the air sacs (alveoli) in the lungs): 2 people, 66.67%
  8. Enlarged Prostate: 2 people, 66.67%
  9. Escherichia Infection (bacterial infection by escherichia coli): 2 people, 66.67%
  10. Exposed Bone In Jaw: 2 people, 66.67%

Common conditions people have *:

  1. Multiple Myeloma (cancer of the plasma cells): 2 people, 66.67%
  2. Hypercalcaemia (elevated calcium (ca+) level in the blood): 2 people, 66.67%
  3. Stress And Anxiety: 1 person, 33.33%
  4. Schizophrenia (a mental disorder characterized by a breakdown of thought processes): 1 person, 33.33%
  5. Pain: 1 person, 33.33%
  6. Major Depression (a mood state that goes well beyond temporarily feeling sad or blue. it is a serious medical illness that affects one's thoughts, feelings): 1 person, 33.33%
  7. Bipolar Disorder (mood disorder): 1 person, 33.33%

* Approximation only. Some reports may have incomplete information.

Do you take Penicillin and have Myositis?

Check whether Myositis is associated with a drug or a condition

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

Related publications that referenced our studies

Related studies

How severe was Myositis and when was it recovered:

Expand to all the drugs that have ingredients of penicillin g potassium:

Alternative drugs to, pros and cons of Penicillin:

Common Penicillin side effects:

Browse all side effects of Penicillin:

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

Myositis treatments and more:

COVID vaccines that are related to Myositis:

Common drugs associated with Myositis:

All the drugs that are associated with Myositis:

Common conditions associated with Myositis:

All the conditions that are associated with Myositis:

How the study uses the data?

The study uses data from the FDA. It is based on penicillin g potassium (the active ingredients of Penicillin) and Penicillin (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.

Who is eHealthMe?

With medical big data and proven AI 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 600+ 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: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on 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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