What are the symptoms of an allergy to Keflex?

Symptoms of an allergy to Keflex (cephalexin) can include skin reactions such as hives, rash, or itching. Other potential symptoms may involve respiratory issues like difficulty breathing or wheezing, as well as gastrointestinal problems such as nausea or vomiting. In severe cases, anaphylaxis may occur, leading to swelling of the face, throat, and difficulty swallowing. If an allergy is suspected, it is essential to seek medical attention promptly.