Another way that worms leave a dog's body is through vomit. The Puppy Dog Place website states that it is normal for a dog to vomit a few worms after it has received antihelmintics. Doing so shows that the medication is working and removing the worms from the dog's body. However, if the dog vomits a large amount of worms or repeatedly vomits, contact your veterinarian.
Apr 3, 2017 - How to Treat Worms in Dogs
Heartworms can, and should, be detected by a simple blood test before administering medication. The antigen test detects an adult female worms at least 5-8 months old. The says: “The antigen detection test is the preferred diagnostic method for asymptomatic dogs or when seeking verification of a suspected HW infection.”
Dog Tapeworms – Causes, Treatments, and Prevention - Pets WebMD
Another question: is your dog healthy enough for these medications? The “Heartworm Prevention” page of the states: “Healthy kidneys and normal liver functions are essential in metabolizing most medications.” Many dogs, including my Jiggy, do not have healthy organ function. I wonder how many unhealthy animals are nevertheless on meds?
Regardless of the type of worm, the best remedy is prevention
Several are available for dogs. These products differ based on which worms need to be eliminated from your pet. The most common worm medications used in young puppies contain Pyrantel, which is found in . Usually, two doses of Pyrantel are recommended for puppies at three and six weeks old to treat and prevent roundworms and hookworms, which are most common in puppies this age. There are five general types of worms that dogs can contract: round worms, tapeworms, whipworms, heartworms, and hookworms. Some of these parasites are more devastating than others, but over time all of them can become a source of poor health and discomfort for your companion animal. It is important to recognize the side effects of the various worm medications. Once you do, you can make an educated decision about whether to treat a side-effect as an emergency or as a worrisome but acceptable event.