Buyers beware of internet pharmacies! There are benefits when you purchase heartworm medications and flea/tick prevention from a veterinarian versus from online and commercial pharmacies: our prices are comparable as a service to our clients, manufacturer's guarantee only when purchased from a licensed purchasing veterinarian, we maintain records of your purchases, and will ensure that your pet is receiving the correct dose of the medications!! Call us to purchase your medications today! - 203-735-8634!!