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

Summary:

Myositis is reported as a side effect among people who take Cannabis (marijuana), especially for people who are male, 50-59 old, have been taking the drug for < 1 month also take Cosentyx, and have Ankylosing spondylitis.

The phase IV clinical study analyzes which people have Myositis when taking Cannabis. It is created by eHealthMe based on reports of 12,664 people who have side effects when taking Cannabis from the FDA, and is updated regularly.

What is Cannabis?

Cannabis has active ingredients of marijuana. It is often used in stress and anxiety. eHealthMe is studying from 13,371 Cannabis users. Check the latest studies of Cannabis.

What is Myositis?

Myositis (inflammation of the muscles) is found to be associated with 828 drugs and 1,135 conditions by eHealthMe. Check the latest studies of Myositis.



On Jul, 18, 2026

12,664 people reported to have side effects when taking Cannabis.
Among them, 11 people (0.09%) have Myositis.

Could Cannabis cause Myositis?

Among these 11 people:

How long have people been on Cannabis when they have Myositis? *

  • < 1 month: 100 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 0.0 %
  • 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 Myositis when taking Cannabis? *

  • female: 30 %
  • male: 70 %

What is the age of people who have Myositis when taking Cannabis? *

  • 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: 62.5 %
  • 60+: 12.5 %

What are other drugs people take besides Cannabis? *

  1. Cosentyx: 7 people, 63.64%
  2. Voltaren: 6 people, 54.55%
  3. Ibuprofen: 4 people, 36.36%
  4. Naproxen: 3 people, 27.27%
  5. Pyridoxine: 2 people, 18.18%
  6. Cymbalta: 1 person, 9.09%
  7. Diclofenac Sodium: 1 person, 9.09%
  8. Gabapentin: 1 person, 9.09%
  9. Isoniazid: 1 person, 9.09%
  10. Lenvatinib: 1 person, 9.09%

What are other side effects people have besides Myositis? *

  1. Muscle Rupture (tear in muscle): 6 people, 54.55%
  2. Bursitis (inflammation of a bursa, typically one in the knee, elbow, or shoulder): 6 people, 54.55%
  3. Venous Pressure Jugular Decreased: 2 people, 18.18%
  4. Rhabdomyolysis (a condition in which damaged skeletal muscle tissue breaks down): 2 people, 18.18%
  5. Hypovolaemia (a decreased volume of circulating blood in the body): 2 people, 18.18%
  6. Compartment Syndrome (painful condition that occurs when pressure within the muscles builds to dangerous levels): 2 people, 18.18%
  7. Swallowing Difficulty: 1 person, 9.09%
  8. Overdose: 1 person, 9.09%
  9. Myocarditis (inflammation of heart muscle myocardium): 1 person, 9.09%
  10. Musculoskeletal Discomfort (discomfort in the body's muscles, joints, tendons, ligaments and nerves): 1 person, 9.09%

What are the existing conditions these people have? *

  1. Ankylosing Spondylitis (type of arthritis affecting the spine): 7 people, 63.64%
  2. Pulmonary Tuberculosis (lungs tuberculosis): 2 people, 18.18%
  3. Depression: 2 people, 18.18%
  4. Generalized Anxiety Disorder (excessive, uncontrollable, unexplained and often irrational worry): 1 person, 9.09%
  5. Endometrial Cancer: 1 person, 9.09%
  6. Bipolar Disorder (mood disorder): 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Cannabis and have Myositis?

- Check whether Myositis 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 Cannabis:

Myositis treatments and more:

How severe was Myositis and when was it recovered:

Expand to all the drugs that have ingredients of marijuana:

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 Cannabis:

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 Myositis:

Browse all the conditions that are associated with Myositis:

Related publications that referenced our studies


How the study uses the data?

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