You should not use Keflex if you are allergic to cephalexin or to similar antibiotics, such as Ceftin, Cefzil, Omnicef, and others. Tell your doctor if you are allergic to any drugs, especially penicillins or other antibiotics.
Tell your doctor if you have kidney disease, liver disease, a stomach or intestinal disorder such as colitis, or diabetes.
Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Keflex will not treat a viral infection such as the common cold or flu.
Before taking this medicine
To make sure Keflex is safe for you, tell your doctor if you have ever had
an allergy to any drug (especially penicillin);
liver or kidney disease; or
intestinal problems, such as colitis.
Tell your doctor if you are pregnant or breast-feeding.
