Review: could Prempro cause Breast Cancer?


Breast cancer is found among people who take Prempro, especially for people who are female, 50-59 old , have been taking the drug for 2 - 5 years, also take medication Premarin, and have Hormone replacement therapy . We study 38,061 people who have side effects while taking Prempro from FDA and social media. Among them, 14,634 have Breast cancer. Find out below who they are, when they have Breast cancer and more.

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Prempro has active ingredients of estrogens, conjugated; medroxyprogesterone acetate. It is often used in hormone replacement therapy. (latest outcomes from Prempro 38,532 users)

Breast Cancer

Breast cancer has been reported by people with breathing difficulty, fever, rashes, diarrhea, joint pain (latest reports from 85,598 Breast cancer patients).

On Aug, 30, 2016

38,061 people reported to have side effects when taking Prempro.
Among them, 14,634 people (38.45%) have Breast Cancer

Number of reports submitted per year:

Could Prempro cause Breast cancer?

Time on Prempro when people have Breast Cancer *:

  • < 1 month: 0.53 %
  • 1 - 6 months: 2.63 %
  • 6 - 12 months: 3.03 %
  • 1 - 2 years: 11.25 %
  • 2 - 5 years: 37.8 %
  • 5 - 10 years: 33.44 %
  • 10+ years: 11.31 %

Gender of people who have Breast Cancer when taking Prempro *:

  • female: 99.92 %
  • male: 0.08 %

Age of people who have Breast Cancer when taking Prempro *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.01 %
  • 30-39: 0.13 %
  • 40-49: 5.7 %
  • 50-59: 50.89 %
  • 60+: 43.27 %

Top conditions involved for these people *:

  • Hormone Replacement Therapy (7,119 people)
  • Menopausal Symptoms (841 people)
  • Oestrogen Replacement Therapy (564 people)
  • Menopause (369 people)
  • Hypertension (176 people)

Top co-used drugs for these people *:

  • Premarin (9,202 people)
  • Provera (8,218 people)
  • Cycrin (1,818 people)
  • Medroxyprogesterone Acetate (1,644 people)
  • Estrace (1,067 people)

* Approximation only. Some reports may have incomplete information.

** Reports from social media are used.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

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