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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November 10th
2008
12:58 PM
I was put on Cephalexon (Keflex) for an anorectal abcess & immediately came down with raging tinnitus, headaches, earaches, lethargy, jaw pains, eye pains, & fever. This was three months ago & the symptoms remain. Three doctors have yet to figure out why. I've had blood tests which only show that I have "a low-level infection" of some type. In the interem, I've had surgery for an anorectal abcess, yet my post-Keflex symptoms continue.
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