Prempro and Breast infection - a phase IV clinical study of FDA data

Summary:

Breast infection is reported as a side effect among people who take Prempro (estrogens, conjugated; medroxyprogesterone acetate), especially for people who are female, 50-59 old, have been taking the drug for 2 - 5 years also take Provera, and have Hot flush.

The phase IV clinical study analyzes which people have Breast infection when taking Prempro. It is created by eHealthMe based on reports of 42,607 people who have side effects when taking Prempro from the FDA, and is updated regularly.

What is Prempro?

Prempro has active ingredients of estrogens, conjugated; medroxyprogesterone acetate. It is often used in menopause. eHealthMe is studying from 42,950 Prempro users. Check the latest studies of Prempro.

What is Breast infection?

Breast infection is found to be associated with 449 drugs and 750 conditions by eHealthMe. Check the latest studies of Breast infection.

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, 28, 2026

42,607 people reported to have side effects when taking Prempro.
Among them, 34 people (0.08%) have Breast infection.

Could Prempro cause Breast infection?

Among these 34 people:

How long have people been on Prempro when they have Breast infection? *

  • < 1 month: 0.0 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 40 %
  • 2 - 5 years: 50 %
  • 5 - 10 years: 10 %
  • 10+ years: 0.0 %

What is the gender of people who have Breast infection when taking Prempro? *

  • female: 100 %
  • male: 0.0 %

What is the age of people who have Breast infection when taking Prempro? *

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.0 %
  • 30-39: 0.0 %
  • 40-49: 3.33 %
  • 50-59: 53.33 %
  • 60+: 43.33 %

What are other drugs people take besides Prempro? *

  1. Premarin: 21 people, 61.76%
  2. Provera: 21 people, 61.76%
  3. Estraderm: 9 people, 26.47%
  4. Zoloft: 7 people, 20.59%
  5. Xanax: 6 people, 17.65%
  6. Synthroid: 5 people, 14.71%
  7. Arimidex: 5 people, 14.71%
  8. Aspirin: 5 people, 14.71%
  9. Climara: 5 people, 14.71%
  10. Estrace: 5 people, 14.71%

What are other side effects people have besides Breast infection? *

  1. Breast Cancer Female: 9 people, 26.47%
  2. Breast Cancer In Situ: 9 people, 26.47%
  3. Spinal Osteoarthritis (joint cartilage loss in spine): 9 people, 26.47%
  4. Oestrogen Receptor Assay Positive: 8 people, 23.53%
  5. Pain: 8 people, 23.53%
  6. Osteopenia (a condition where bone mineral density is lower than normal): 8 people, 23.53%
  7. Breast Cancer: 7 people, 20.59%
  8. Rashes (redness): 7 people, 20.59%
  9. Breast Cancer Metastatic: 7 people, 20.59%
  10. Breast Pain: 7 people, 20.59%

What are the existing conditions these people have? *

  1. Hot Flush (sudden feelings of heat): 10 people, 29.41%
  2. Depression: 7 people, 20.59%
  3. Cardiac Disorder: 5 people, 14.71%
  4. High Blood Cholesterol: 4 people, 11.76%
  5. Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 4 people, 11.76%
  6. High Blood Pressure: 2 people, 5.88%
  7. Breast Pain: 2 people, 5.88%
  8. Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 5.88%
  9. Urinary Incontinence (inability to control the flow of urine and involuntary urination): 2 people, 5.88%
  10. Precancerous Cells Present: 2 people, 5.88%

* Approximation only. Some reports may have incomplete information.

Do you take Prempro and have Breast infection?

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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Prempro:

Breast infection treatments and more:

How severe was Breast infection and when was it recovered:

Expand to all the drugs that have ingredients of estrogens, conjugated; medroxyprogesterone acetate:

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 Prempro:

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 Breast infection:

Browse all the conditions that are associated with Breast infection:


How the study uses the data?

The study uses data from the FDA. It is based on estrogens, conjugated; medroxyprogesterone acetate (the active ingredients of Prempro) and Prempro (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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