Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Activella (estradiol/norethindrone) and Prefest (estradiol/norgestimate) are both combination medications used to treat menopausal symptoms and prevent bone loss. Activella is available in both brand and generic forms, while Prefest is only available as a brand-name medication, which might make it more expensive. Activella is taken as a single tablet daily, whereas Prefest requires you to alternate between two different colored tablets every three days, which can be confusing. Both medications contain an estrogen and a progestin, but the specific progestins differ: Activella uses norethindrone, and Prefest uses norgestimate. Neither medication is recommended as a first-choice for preventing osteoporosis due to its higher risk of serious side effects like breast cancer and blood clots. Both medications share similar risks, including blood clots, heart attacks, strokes, and certain cancers, as well as more common side effects like headaches and cold-like symptoms.
Activella (estradiol / norethindrone)
Prefest (estradiol / norgestimate)
Activella (estradiol / norethindrone)
Prefest (estradiol / norgestimate)
Summary of Activella vs. Prefest
Summary for Estrogen replacement / Progestin
Prescription only
Activella is a combination hormone replacement therapy (HRT) that contains estradiol (an estrogen) and norethindrone (a progestin). It's used to treat certain symptoms of menopause, such as night sweats and vaginal dryness, related to low estrogen levels. It can also help prevent bone loss (osteoporosis) in females who've reached menopause. The typical dose is 1 tablet by mouth once daily. Some side effects of this medication include breast pain and headache. Activella (estradiol / norethindrone), as well as other HRTs, isn't recommended for people who've had breast cancer.
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Activella is a brand-name medication. It also comes as a generic and branded generics, such as Mimvey.
Summary for Estrogen replacement / Progestin
Prescription only
Prefest (estradiol / norgestimate) is a combination medication that works well to relieve menopausal symptoms and prevent bone loss, but the directions on the package might be a little tricky to follow when you first start it.