Yes, you can give your dog Amoxicillin. You can get it on Chewy for 12 Cents each. When used in the proper doses, it is safe and efficient for managing bacterial infections in dogs. However, before using Amoxicillin, you need the vet’s approval and a prescription. Amoxicillin (brand names Amoxil, Amoxi-Tabs, Amoxi-Drop) is an aminopenicillin antibiotic made from the Penicillium fungus. Amoxicillin is a more robust version of penicillin, has a broader spectrum of antimicrobial activity, and is more resistant to stomach acids. For a more boosted efficacy, Amoxicillin is often paired with Clavulanic acid (β-lactam drug). In the veterinary medicine world, the combination of these medications is sold under the brand name Clavamox.