Miralax and Malignant pleural effusion - a phase IV clinical study of FDA data

Summary:

Malignant pleural effusion is reported as a side effect among people who take Miralax (polyethylene glycol 3350), especially for people who are female, 60+ old, also take Doxycycline, and have Pain.

The phase IV clinical study analyzes which people have Malignant pleural effusion when taking Miralax. It is created by eHealthMe based on reports of 80,819 people who have side effects when taking Miralax from the FDA, and is updated regularly.

What is Miralax?

Miralax has active ingredients of polyethylene glycol 3350. It is often used in constipation. eHealthMe is studying from 81,754 Miralax users. Check the latest studies of Miralax.

What is Malignant pleural effusion?

Malignant pleural effusion (a condition in which cancer causes an abnormal amount of fluid to collect between the thin layers of tissue lining of lung) is found to be associated with 353 drugs and 448 conditions by eHealthMe. Check the latest studies of Malignant pleural effusion.

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 Sep, 02, 2026

80,819 people reported to have side effects when taking Miralax.
Among them, 15 people (0.02%) have Malignant pleural effusion.

Could Miralax cause Malignant pleural effusion?

Among these 15 people:

What is the gender of people who have Malignant pleural effusion when taking Miralax? *

female: 53.85 %
male: 46.15 %

What is the age of people who have Malignant pleural effusion when taking Miralax? *

What are other drugs people take besides Miralax? *

What are other side effects people have besides Malignant pleural effusion? *

Oedema Peripheral (superficial swelling): 6 people, 40.00%
Anaemia (lack of blood): 6 people, 40.00%
Hypotension (abnormally low blood pressure): 5 people, 33.33%
White Blood Cell Count Decreased: 4 people, 26.67%
Blood Alkaline Phosphatase Increased: 4 people, 26.67%
Dyspnea (difficult or laboured breathing): 4 people, 26.67%
High Blood Pressure: 4 people, 26.67%
Abdominal Distension: 3 people, 20.00%
Dermatitis Psoriasiform (large white or silver flakes on the skin): 3 people, 20.00%
Death: 3 people, 20.00%

What are the existing conditions these people have? *

Pain: 5 people, 33.33%
Nausea (feeling of having an urge to vomit): 4 people, 26.67%
Colon Cancer: 4 people, 26.67%
Diarrhea: 4 people, 26.67%
Indigestion: 4 people, 26.67%
Stress And Anxiety: 3 people, 20.00%
Appetite Disorder (abnormal eating habits): 3 people, 20.00%
Breast Cancer Metastatic: 3 people, 20.00%
Dyspnea (difficult or laboured breathing): 3 people, 20.00%
Renal Cell Carcinoma (a kidney cancer): 3 people, 20.00%

* Approximation only. Some reports may have incomplete information.

Do you take Miralax and have Malignant pleural effusion?

- Check whether Malignant pleural effusion 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 Miralax:

Miralax (81,754 reports)

Browse all side effects of Miralax:

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 Malignant pleural effusion:

Malignant pleural effusion (353 drugs)

Browse all the conditions that are associated with Malignant pleural effusion:

Malignant pleural effusion (448 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on polyethylene glycol 3350 (the active ingredients of Miralax) and Miralax (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.