Premarin vs. Evamist for Menopause: Important Differences and Potential Risks.

Key takeaways

Premarin (conjugated estrogens) and Evamist (estradiol) are both estrogen replacement therapies used to relieve menopausal symptoms like hot flashes and night sweats. However, they differ in their forms and applications. Premarin is an oral tablet that can also treat low estrogen levels due to other conditions and certain cancers in advanced stages, and helps prevent osteoporosis, while Evamist is a topical spray specifically for managing menopausal symptoms. Premarin can be taken daily or in cycles, whereas Evamist is applied once daily to the forearm. Premarin has a broader range of side effects, including weight gain and more severe risks like blood clots and certain cancers. Evamist, on the other hand, has milder side effects but can still pose serious risks, including early puberty in children if Evamist is transferred through skin contact as well as blood clots and certain cancers. Both medications require a prescription and are available only as brand-name products.

Premarin tablet

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Evamist

(estradiol)

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Summary for Premarin

Prescription only

Premarin (conjugated estrogens) oral tablet is an estrogen hormone replacement therapy (HRT) used to treat menopause symptoms, such as hot flashes and vaginal dryness, and other conditions caused by low estrogen levels. It can also help prevent osteoporosis after menopause and treat certain advanced breast or prostate cancers. Depending on why you're taking it, you might take it by mouth every day or in cycles. Common side effects include headache, stomach pain, nausea, and breast pain.

Indications for Premarin

Hot flashes, night sweats, and flushes caused by menopause
Vaginal dryness caused by menopause
Low estrogen levels due to certain conditions
Advanced breast cancer
Advanced prostate cancer
Prevention of bone loss (osteoporosis) after menopause

Pros and Cons for Premarin

Pros

Relieves multiple menopause symptoms
Available in multiple strengths
Comes as a tablet that you take by mouth

Cons

Raises your risk of blood clots, stroke, and certain cancers
Some people might need to take it with another hormone called progestin
Can cause vaginal bleeding and spotting

Common Side Effects for Premarin

Headache (13-14%)
Abnormal vaginal bleeding (2-13%)
Breast pain (7-12%)
Stomach pain (8-11%)
Passing gas (4-6%)
Vaginal discharge (4-5%)
Back pain (3-5%)
General pain (3-5%)
Nausea (3-5%)
Insomnia (3-5%)
Depression (3-5%)
Weakness (2-5%)

Warnings for Premarin

Blood clots, heart attacks, and strokes
Uterine (endometrial) cancer
Breast cancer
Dementia
Ovarian cancer
Liver or gallbladder problems
Changes in calcium levels in the blood
Vision problems
High triglycerides (fat) levels
Low thyroid hormone levels
Buildup of fluids in your body (fluid retention)
Worsening of certain other health conditions

Summary for Evamist

Prescription only

Evamist (estradiol) is a topical hormone spray that helps relieve the hot flashes and night sweats caused by menopause. It's a hormone replacement therapy (HRT) that's sprayed onto the skin of your inner forearm once a day. The typical dose ranges from 1 to 3 sprays daily, depending on your symptoms. Some potential side effects of this medication include headache, tender breasts, and back pain.

Indications for Evamist

Moderate-to-severe vasomotor symptoms of menopause, like hot flashes and night sweats

Pros and Cons for Evamist

Pros

Dries within 2 minutes, doesn't need to be rubbed in
Possible option if you can't swallow pills
Only needs to be applied once a day

Cons

Raises your risk of certain cancers, blood clots, and strokes
Need to use with progestin to lower your risk of uterine cancer (in females who have uterus)
Must cover with clothing to prevent exposure to others