According to the experts at Drugs.com, Keflex, also known as cephalexin, is part of the drug family referred to as antibiotics. This class of drugs helps fight any infection in your body which is caused by bacteria, and while a popular method of treatment, it is also one that is accompanied by a variety of side effects.
Common Side Effects
According to the medical experts at eMedTV.com, the most common side effects associated with Keflex include diarrhea, an upset stomach and confusion. You may also find that an inexplicable rash appears, you begin experiencing headaches or a yeast infection develops. These are all normal side effects of this drug and should pass within a short time.
Serious Side Effects
Keflex is also accompanied by more serious side effects which include the onset of hives, bloody stools, inexplicable bleeding or bruising, itching, problems breathing or swallowing, peeling skin, diarrhea, severe rash, wheezing and the onset of throat or mouth sores. Contact your doctor immediately if any of these pertain to you.
Rare Side Effects
Rare side effects, as uncommon as they may be, still occur in roughly one percent of patients taking Keflex. They include hallucinating, pain in your joints, vomiting, vaginal discharge, seizures, fatigue, diarrhea with blood, anemia and confusion.
Signs of Overdose
According to Drugs.com, it is possible to overdose on Keflex. It's imperative to take it only as prescribed. However if you have taken more than you should, you may experience one or all of the following; nausea, pains in your stomach, blood in your urine, diarrhea and vomiting. Seek medical attention immediately if any of these occur.



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