What is the definition of "rare side effects"?

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Question:

What is the definition of "rare side effects"?
submitted by Ed, 9/5/08

Could you please define "rare side effects" using beta-blockers. How many out of a thousand patients might experience them?

Answer:
by Texas Heart Institute cardiologist, Patrick J. Cook, MD

"Rare" usually refers to an incidence of <1%, or fewer than 10 out of 1,000.

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