Heartgard is a medication for dogs that can be taken once per month to prevent heartworms. It comes in beef chewable tabs so that your dog will want to eat it. Heartgard also has a Plus version that additionally protects your dog against hookworms and roundworms. You can get Heartgard through your vet or save a few dollars by buying it without a prescription in Canada.
Use Petdrugs.com (see resources), one of Canada's top websites for selling Heartgard. Shipping is a flat $6.95 if you live in the United States, but is free if you order over $99 worth of the Heartgard. Since your pet will need the Heartgard once per month, it makes sense to stock up and take advantage of the free shipping.
Go to ABC Online Pharmacy (see resources) if you don't mind using the generic brand of Heartgard. This will save you a lot of money over the course of a year, and the generic brand is known for being just as good as Heartgard. You don't need a prescription since the company is based in Canada.
Buy Heartgard from Canada Drugs (see resources) if you are looking for a guarantee. Canada Drugs offers Heartgard with a price guarantee and a shipping guarantee. What is even better is that they have a hassle-free return policy if you are unhappy for any reason.
Check out Planet Drugs Direct (see resources). This company provides more than just the product for sale without a prescription. They also provide information about the product such as directions, precautions and side effects. It is a great source to find out all you need to know about the product before you purchase it. You can then purchase the product from Planet Drugs Direct.