The only praziquantel my vet has is "Drontal Plus" The ingedients are, praziquantel,pyrantel pamoate and febantel. Pyrantel pamoate is active against hookworms and ascarids. Febantel is active against nemotodes including whipworms, according to the instructions. Does this sound like the praziquantel people are using for internal parasites or should I be looking for straight praziquantel? thanks.