What is Pyrantel primarily used for in canines and felines?

Pyrantel is primarily used as a deworming agent for canines and felines, specifically targeting intestinal parasites such as roundworms, pinworms, and whipworms. This medication works by paralyzing the worms in the gastrointestinal tract, allowing the animal's body to expel them naturally.

The effectiveness of Pyrantel in treating these specific types of worms makes it a critical component of parasite control in pets. It is not involved in flea prevention, heart disease treatment, or relieving upset stomachs, which require different medications and approaches. Each of those conditions addresses different health issues that do not align with the spectrum of action that Pyrantel offers against intestinal parasites. Thus, its designation as a dewormer is both accurate and significant in the realm of veterinary care.