Compare Premarin vs. Prempro

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Treats low estrogen, relieves menopause symptoms, and lowers your risk of osteoporosis.

Premarin (Conjugated Estrogens) relieves menopausal symptoms and prevents bone loss. It's an oral hormone replacement, so it can have a lot of side effects, and it's important to think through the benefits and potential hassles of this drug before using it.

3.5/ 5 average rating with 154 reviewsforPremarin
No information currently available
Upsides
  • Premarin (Conjugated Estrogens) replenishes estrogen to your whole body and relieves multiple symptoms due to low estrogen (hot flashes, night sweats, vaginal dryness).
  • Lowers your risk of fractures by keeping your bones healthy. Make sure you also take enough calcium and Vitamin D.
  • Improves mood, energy, and mental alertness for some people.
  • Does not expose your partner to estrogen during sexual acitivities like vaginal estrogen creams.
  • Can help relieve symptoms of prostate cancer or advanced breast cancer in some people.
No information currently available
Downsides
  • More potential side effects than estrogen creams since it exposes your whole body to estrogen.
  • Increases your risk of uterine and breast cancer.
  • If you have your uterus, you have to take Premarin (Conjugated Estrogens) with another hormone called progestin to lower your risk of uterine cancer.
  • Increases your risk of developing blood clots and stroke.
  • Can't be used in people with liver problems.
  • Can be expensive since it's only available as a brand name product.
No information currently available
Used for
  • Hot flashes and night sweats
  • Vaginal dryness and inflammation
  • Low estrogen
  • Primary ovarian failure
  • Prevention of postmenopausal osteoporosis
  • Metastatic breast cancer
  • Advanced prostate cancer
  • Menopause - Moderate to severe abnormal vasomotor function Menopause - Moderate to severe vaginal atrophy - Moderate to severe vulvar atrophy Postmenopausal osteoporosis
  • In women with an intact uterus; Prophylaxis
Dosage forms
  • Pill
  • Pill
Price
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Reviews
154 reviews so far
50%
saidit'sworth it
43%
saiditworked well
11%
saidit'sa big hassle

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Side effects
28possible side effects
  • Headache
    13%
  • Abdominal pain
    9%
  • Breast pain
    7%
  • Nausea
    5%
  • Asthenia
    4%
  • Back pain
    4%
  • Pain
    4%
  • Flatulence
    4%
  • Insomnia
    4%
  • Leukorrhea
    4%
  • Vaginal moniliasis
    4%
  • Leg cramps
    3%
  • Depression
    3%
  • Pruritus
    3%
  • Vaginitis
    3%
  • Pelvic pain
    2%
  • Hypertension
    2%
  • Diarrhea
    2%
  • Dyspepsia
    2%
  • Weight gain
    2%
  • Emotional lability
    2%
  • Hypertonia
    2%
  • Acne
    2%
  • Alopecia
    2%
  • Breast enlargement
    2%
  • Breast neoplasm
    2%
  • Cervix disorder
    2%
  • Vaginal hemorrhage
    2%
See more detailed side effects
The Prempro (Conjugated Estrogens / Medroxyprogesterone Acetate) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Endometrial cancer
    • Using estrogen for more than one year
  • Breast cancer
    • Personal or family history of breast cancer
    • Duration of use
  • Increased risk of blood clots and stroke
    • Personal or family history of blood clots
    • Obesity
    • Systemic lupus erythematosus (SLE)
  • Increased risk of heart disease
    • Smoking
    • Obesity
    • High blood pressure
    • High blood sugar
    • High cholesterol
    • Age 50 or older
  • Memory loss
  • Gallbladder problems
  • Serious allergic reaction
    • Prior severe allergic reaction to Premarin (Conjugated Estrogens)
  • Harm to fetus
    • Women of childbearing age
  • Pancreas swelling (pancreatitis)
    • High levels of triglycerides
See more detailed risks and warnings
No information currently available