Keflex Adverse Reactions

Gastrointestinal: Symptoms of pseudomembranous colitis may appear either during or after antibiotic treatment. Nausea and vomiting have been reported rarely. The most frequent adverse effects has been diarrhea. It was very rarely severe enough to warrant cessation of therapy. Dyspepsia and abdominal pain have also occurred. As with some penicillins and some other cephalosporins, transient hepatitis and cholestatic jaundice have been reported rarely.
Hypersensitivity: Allergic reactions in the form of rash, urticaria, angioedema and rarely, erythema multiforme. Stevens-Johnson syndrome or toxic epidermal necrolysis have been observed. These reactions usually subside upon discontinuation of the drug. Anaphylaxis has also been reported.
Other reactions have included genital and anal pruritus, genital moniliasis, vaginitis and vaginal discharge, dizziness, fatigue, headache, agitation, confusion, hallucinations, arthralgia, arthritis and joint disorders. Reversible interstitial nephritis has been reported rarely. Eosinophilia, neutropenia, thrombocytopenia and slight elevations in SGOT and SGPT have been reported.