There are people who have used the rx route. Although the posters on this board are split (which is becoming a tad bit argumentative). My thinking is to try the natural route first. I would suggest you research the rx's if you decide to use them, taking a drug w/o understanding dosages and interactions would be not wise. Determining proper dosages from an animal model could be problematic. If I were going to get a rx I would use a mebendazole or albendazole.
(vermox, fenbendazole, albendazole)) are effective against most helminths (except Tapeworms or cestodes)
praziquantel is both used in animal and human applications. Many equine dewormers use this w/ ivermectin. It is effective against all helminths including cestodes and flukes. whereas mebandazole is primarily not used for the latter two.
If you are looking into killing protozoal infections then you will need to use another class of rx's ....