Prescription items are NON-RETURNABLE and NON REFUNDABLE Doxycycline Monohydrate 100mg Tablet 50 Count Doxycycline is an antibiotic commonly used to treat many diseases carried by ticks, it is used to treat susceptible infections such as erlichiosis, Lyme Disease, Rocky Mountain spotted fever, salmon poisoning, toxoplasmosis and leptospirosis. Doxycycline works by preventing bacteria from producing proteins that are essential to the growth and reproduction of the bacteria. It therefore stops the spread of infection, allowing the body's immune system to kill the existing bacteria. Dose and Administration: Always follow the dosage instructions provided by your veterinarian. If you have difficulty giving the medication, contact your veterinarian. Use all of the medication prescribed. If your pet does not receive the entire course of treatment, the infection may recur or worsen. Store in a cool dry place. 012KV-31124