Get Keflex Conveniently Delivered to Your Doorstep Without the Need to Leave Your Home Commercial name: Keflex (Cephalexin) What it is used for: Bacterial infections Dosage: Pills 50, 125, 250, 375, 500, 750 mg each How much does Keflex cost? The price per tablet ranges from $0.76 Where can I buy Keflex in the USA? Enjoy the ease of purchasing prescribed antibiotics from the comfort of your residence. Our .