Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Premarin (conjugated estrogens) and Minivelle (estradiol) are both estrogen replacement medications used to treat menopausal symptoms like hot flashes and night sweats. They can also help prevent bone loss after menopause. However, they have some important differences. Premarin is an oral tablet, while Minivelle is a patch applied to the skin. Premarin is used for a wider range of conditions, including certain advanced stages of breast and prostate cancers. Premarin is taken daily or in cycles, depending on the condition, while Minivelle is applied to the lower stomach or buttocks twice a week. Both medications are only available as a brand. Common side effects of Premarin include headache, stomach pain, and nausea, while Minivelle may cause headaches, breast tenderness, and back pain. Both medications carry risks of serious side effects like blood clots, stroke, and certain cancers. Neither medication contains a progestin, so if you have a uterus you may need to take progestin separately.
Premarin
Minivelle (estradiol patch)
Premarin
Minivelle (estradiol patch)
Summary of Premarin vs. Minivelle
Summary for Estrogen replacement
Prescription only
Premarin (conjugated estrogens) is an oral estrogen hormone tablet that's used to treat various conditions in adults. Most commonly, it relieves menopausal symptoms such as vaginal dryness and hot flashes. The medication is also used for treating low estrogen levels, certain advanced stages of breast or prostate cancers, and osteoporosis after menopause. Depending on what you're using it for, the medication can be taken daily or in cycles. Side effects include headache, stomach pain, nausea, and breast pain.
Summary for Estrogen replacement
Prescription only
Minivelle (estradiol patch) is a twice-weekly hormonal patch that treats moderate-to-severe vasomotor symptoms, like hot flashes and night sweats, caused by menopause. It can also prevent bone loss (osteoporosis) after menopause. It's a type of hormone replacement therapy. The usual dose is one patch applied to the lower stomach or buttocks twice a week, or every 3 to 4 days. Potential side effects include headache, breast tenderness, and back pain.