“Best broad spectrum pet antibiotic for stubborn, gram negative infections like ear infections, as well as other infections that are gram positive. Do your research to get the dosage; usually 10 mg to 13.5 mg/1 lb of your dog's body weight. Thanks, Allivet, for being here, and staying fair with your pricing. p.s. I give my Dane colloidal silver in his water when giving the flex meds, to multiply the effect of the antibiotic from 100 - 1000 times!”