Mebendazole is only one part of a complete parasite protocol. Google Dr. Andreas Kalcker and see his parasite protocol. There are numerous other 'things' in his protocol. He will tell you that you have to keep doing the protocol continuously for up to a year to eliminate Ascaris because of their life cycle. He also states that you need to do a parasite protocol at least 4 times a year because they are so easy to get.