This registry is a place to share positive or negative side effects of using Keflex. If you directly experienced a side effect while using Keflex, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
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September 7th
2003
5:29 PM
I have been takin Keflex two days 4 times a day and all I do is sleep. I was concerned about it making me have trouble breathing because I'm on oxygen all the time but it hasn't bothered yet. Is this natural for it to make me tired?
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