Are heartworm pills bad for dogs?
On One Hand: Heartworm Medication Stops HeartwormsHeartworm has a slow, cumulative effect on your dog, slowly aging and killing her. Heartworm pills prevent the heartworm larvae from maturing and having such a negative effect on your dog. The medication is prescribed by your dog’s veterinarian and you give it to the dog once every month.On the Other: Giving Medication to an Infected DogVeterinarians will administer blood tests to dogs before beginning heartworm prevention medication. If the dog is already infected with heartworms, giving him a heartworm preventive medication could cause him to become seriously ill or die. It also takes six to seven months for the heartworm microfilariae to mature and cause a positive test result. Finally, medication itself might have side effects. For example, a Heartgard product details page notes, “The following adverse reactions have been reported following the use of HEARTGARD: Depression/lethargy, vomiting, anorexia, diarrhea,mydriasis, ataxia, st
