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Compare Fosamax vs. Estrace

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

Key takeaways

Alendronate (Fosamax) and estradiol (Estrace) are both medications that can be used to improve bone health, but they belong to different classes and have different uses. Alendronate is a bisphosphonate that prevents and treats osteoporosis by slowing bone breakdown. Estradiol, on the other hand, is an estrogen replacement used to relieve menopausal symptoms like vaginal dryness and itching and also to prevent bone loss after menopause. Alendronate is taken orally, either daily or weekly, and is available in tablet, oral solution, and dissolvable tablet forms. Estradiol comes as an oral tablet and cream, although the cream is not approved to prevent bone loss after menopause. Common side effects of alendronate include stomach pain and heartburn, whereas estradiol can cause nausea and breast pain and increase the risk of certain cancers and blood clots. Alendronate requires you to stay upright for 30 minutes after taking it. Both medications are available as a lower-cost generic.

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