Just to warn you about heartworms: They can kill your pet! Your pet must be treated within a reasonable amount of time to avoid damage to the heart and lungs. My dog was only 2 years old and the vet stated that she must have not had them long, for her lungs and heart were in good condition.
I followed the step by step in Dr. Clark's book. She says the dosage is per 10 pounds of weight. I also added garlic, which is supposed to repel mosquitos, mites, fleas, and ticks.
Many alternative methods advise certain herbs but don't have a structure or dosage. I only noticed Dr. Clark's that did.
Also, I read a book by an alternative vet by the name of Goldstein. He says that the pet's immune system suffers with store-bought pet food. Anything not FDA approved for human consumption is added to pet food -- let your imagination wander.
He bakes a whole chicken, adds a recipe of brown rice, then adds vegetables. When I do it, I add some frozen vegetables with the rice and deboned chicken while warm and keep it in a freezer ziploc bag.
Of course with any new program, I was consistent for several weeks, then slacked off. I come back to it time and again, but when it's been awhile, I restart with parsley juice the first week, then gradually add the other ingredients.
I tested my dog after 6 months of the diagnosis. Certainly, the heartworms were killed off sooner than that, but didn't know how much sooner. Since each test is $20 a pop, I wasn't going to be testing every week, every month, etc.
Dogs will eat anything you feed them, so in a way that's good because the herbs are horrible-tasting!
I wish my indoor cats were willing to do this. We haven't found a way to solve that one.