Be aware that counterfeit flea and tick prevention products are increasingly becoming a problem in the United States. The companies that produce these products do not sell them to anyone other than veterinarians. As a result, on-line and mail order pharmacies must work hard to make these products available. Counterfeiters will not sell to veterinarians due to the relationships that veterinarians have established with the manufacturers. Therefore, when purchasing these products, you should always purchase them from a veterinary hospital. By purchasing them from other sources, you are potentially wasting your money while putting your pet's health at risk.
In addition, Heartworm Prevention is guaranteed by the manufacturer only when it is purchased from a veterinarian (due to concerns about counterfeiting). For more information on this guarantee, please feel free to call for an explanation.
Below is a link to E.P.A. information in regards to counterfeit flea and tick control products.
http://www.epa.gov/pesticides/factsheets/petproduct.htm
