Bactrim (sulfamethoxazole and trimethoprim) and Keflex (cephalexin) are antibiotics prescribed to treat bacterial infections. Keflex treats many types of infections, especially skin and soft tissue infections and is also used before dental procedures in patients identified with certain heart-related conditions to prevent bacterial infections of the heart known as endocarditis. A. Dexamethasone elixir B. Nystatin suspension C. Tetracycline oral rinse D. Valacyclovir (Valtrex ®) tablets Key: D Dental Care. Substance Use Disorder. HIV and Hepatitis C. Pharmacy. Lab Services. Insurance Enrollment. OUR HEALTHCARE PROVIDERS. We provide compassionate, comprehensive care to all patients regardless of your insurance or ability to pay. Discounts for essential services are offered based on family size and income. Learn More. OUR CAREERS. Our employment opportunities are continually changing. Keflex and Amoxil amoxicillin are both antibiotics prescribed to treat bacterial infections. Amoxicillin is also used before dental procedures in patients identified with certain heart-related conditions to prevent bacterial infections of the heart known as endocarditis. These drugs belong to different drug classes. Keflex is a cephalosporin antibiotic and amoxicillin is a penicillin-type. Beta-lactam antibiotics include penicillins, cephalosporins and related compounds. As a group, these drugs are active against many gram-positive, gram-negative and anaerobic organisms. Information. Antes de usar la inyección de piperacilina y tazobactam, informe a su médico y farmacéutico si es alérgico a la piperacilina, tazobactam, antibióticos de cefalosporina como cefaclor, cefadroxilo, cefuroxima (Ceftin, Zinacef) y cefalexina (Keflex); otros antibióticos de beta-lactam tales como penicilina o amoxicilina (Amoxil, Larotid, Moxatag); cualquier otro medicamento, o bien, a.