I'm allergic to penicillin and sulfa. Dentist prescribed Clindamycin 150 mg for 10 days for infection in my tooth. Got hives, rash, swollen lips and extreme itching and blotches from head to toe. Was on vacation so stopped medication after 3 days of taking it. It is now 5 days taking benadryl and Nitrofurantoin antibiotic is very often used to treat urinary tract infections. Allergic reactions to this is rather uncommon. However, when it happens the skin reactions could show up as itching, swelling of skin, eczema, and even serious conditions such as stevens-johnson syndrome. Other symptoms affecting gastrointestinal , urinary, blood. im allergic to penicillin and erythromycin, i told the hospital befor my operation to be given 300mg of clindamycin, iv ended up with itchy rash all over it 4days to appear, i was told by surgeon wasnt in same family. Though an allergy can develop at any age, penicillin allergies are often first recorded in childhood, when penicillin is the No. 1 antibiotic prescribed, she said. INTRODUCTION. This topic will review hypersensitivity (allergic) reactions to macrolides, aminoglycosides, tetracyclines, clindamycin, and metronidazole. Background. Patients who report a penicillin (PCN) allergy receive suboptimal antibiotic therapy compared with patients not reporting an allergy. VA Pharmaceutical Sciences CSU PARENTERAL ANTIBIOTIC ALLERGY CROSS-SENSITIVITY CHART Amikacin Amikacin Ampicillin Azithromycin Cefazolin a Cefotaxime b X Penicillin Skin Allergy Testing Penicillin allergy testing can be performed safely on hospitalized patients and suggests improved outcomes, less vancomycin Penicillin and Amoxicillin are excellent antibiotics that have been widely used for decades to treat bacterial infections. Although Penicillin was observed to kill bacteria in 1928, its clinical use for treating infections started in the 1940’s. Penicillin V is an antibiotic in the penicillin group of drugs. It fights bacteria in your body. Penicillin V is used to treat many different types of infections caused by bacteria, such as ear infections.