Delsym and Myalgia aggravated - a phase IV clinical study of FDA data

Summary:

Myalgia aggravated is reported as a side effect among people who take Delsym (dextromethorphan polistirex), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Prempro, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Myalgia aggravated when taking Delsym. It is created by eHealthMe based on reports of 4,675 people who have side effects when taking Delsym from the FDA, and is updated regularly.

What is Delsym?

Delsym has active ingredients of dextromethorphan polistirex. It is often used in cough. eHealthMe is studying from 5,033 Delsym users. Check the latest studies of Delsym.

What is Myalgia aggravated?

Myalgia aggravated (muscle pain) is found to be associated with 1,887 drugs and 615 conditions by eHealthMe. Check the latest studies of Myalgia aggravated.

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, 30, 2026

4,675 people reported to have side effects when taking Delsym.
Among them, 13 people (0.28%) have Myalgia aggravated.

Among these 13 people:

How long have people been on Delsym when they have Myalgia aggravated? *

What is the gender of people who have Myalgia aggravated when taking Delsym? *

female: 69.23 %
male: 30.77 %

What is the age of people who have Myalgia aggravated when taking Delsym? *

What are other drugs people take besides Delsym? *

What are other side effects people have besides Myalgia aggravated? *

Heart Palpitations (feelings or sensations that your heart is pounding or racing): 5 people, 38.46%
Abdominal Pain Upper: 4 people, 30.77%
Feeling Drunk: 4 people, 30.77%
Hyperhidrosis (abnormally increased sweating): 4 people, 30.77%
Headache (pain in head): 4 people, 30.77%
High Blood Pressure: 3 people, 23.08%
Arthropathy: 3 people, 23.08%
Tremor (trembling or shaking movements in one or more parts of your body): 3 people, 23.08%
Sinus Disorder (disease of sinus): 3 people, 23.08%
Pneumonia: 3 people, 23.08%

What are the existing conditions these people have? *

Multiple Myeloma (cancer of the plasma cells): 4 people, 30.77%
Wheezing (a high-pitched whistling sound made while you breath): 1 person, 7.69%
Throat Irritation: 1 person, 7.69%
Pain: 1 person, 7.69%
Nasopharyngitis (inflammation of the nasopharynx): 1 person, 7.69%
Muscle Spasms (muscle contraction): 1 person, 7.69%
Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 1 person, 7.69%
Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Delsym and have Myalgia aggravated?

- Check whether Myalgia aggravated 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 Delsym:

Delsym (5,033 reports)

Browse all side effects of Delsym:

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 Myalgia aggravated:

Myalgia aggravated (1,887 drugs)

Browse all the conditions that are associated with Myalgia aggravated:

Myalgia aggravated (615 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on dextromethorphan polistirex (the active ingredients of Delsym) and Delsym (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.