Doxycycline is a broad spectrum antibiotic that is a member of the tetracycline family. It is used to fight bacterial infections in dogs and cats. Doxycycline is used to treat many different bacterial infections including, leptospirosis, toxoplasmosis, mycoplasma, psittacosis, and tick borne diseases including Lyme disease, ehrlichiosis, and Rocky Mountain spotted fever. **Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.**