Pyrantel pamoate, marketed for dogs under the name Strongid, is among the safest canine dewormers. It's also sold under the brand name Nemex. Because it's generally safe, Strongid is often used for an initial puppy deworming. Puppies are usually born with roundworms or hookworms, passed to them by their mother. The medication, given to dogs in liquid form, paralyzes and kills the worms. The initial dose is followed by another two or three weeks later.
Available over the counter, most dogs tolerate pyrantel pamoate very well, and side effects are relatively rare. Some dogs might experience gastrointestinal upset and throw up after pyrantel pamoate is administered. Consult your vet about giving your dog Strongid if he's taking other medications, especially other wormers. Although debilitated or sick animals can receive Strongid, especially if their issues are worm-related, always check with your vet before giving a pet any medication.
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