While it is always a good idea to talk to your vet before giving your dog any medication, the Frontline family of flea and tick control products is available over the counter. You should take precautions before using it, however, to help ensure the safety of your pet.
You can purchase Frontline directly from your vet, in which case he will provide you with the specific type of the medication best suited to your dog. If you want to buy it yourself, you can do so from many local pet stores and chains as well as the Internet. Frontline is effective against adult fleas and ticks, while Frontline Plus contains a growth inhibitor that will eliminate eggs and larvae as well.
Never use a pesticide product made for one species on another animal. Frontline for cats, for instance, uses a different formulation than the product made for dogs, and using the wrong one may make your pet ill. You also should weigh your dog before purchasing Frontline, and select the dosage to match his current weight in order to avoid a potential overdose.