How do monthly heartworm preventives work?
answer Fortunately, there are many very effective once-a-month heartworm preventives available today. Some are chewable tablets and others are topically-applied solutions. Monthly heartworm preventives, because of their ease of use and effectiveness, have become the popular choice for prevention of heartworm disease. Unlike the daily products of the past, these compounds are capable of killing developing heartworm larvae, and administering the preventive every month will effectively eliminate the chance of infection. Check with your veterinarian to see which product is right for your pet.
