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A member asked:
Does femara (letrozole) cause insomnia?
4 doctors weighed in across 3 answers
Yes: Femara (letrozole) causes insomnia in 7% of people who take it.
Answered 6/25/2014
6.1k views
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Yes: It is a known side effect of femara (letrozole).
Answered 12/23/2012
5.4k views
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Yes, it may: Insomnia is one of the side effects of letrozole and some patients have reported insomnia while taking this medication. It happened to around 7% of the patients who took it. Therefore, it is possible for letrozole to cause insomnia.
Answered 6/16/2017
656 views
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