Many people here say that if you have one, it is most commonly associated with a bunch of others. They never come alone, and once you notice one that has given the others adequate time to also hatch and grow.
So bottom line is, if you're infected it is usually not a singular type infection but a plethora. Candida is also present, heavily, in most cases.
Typical doses of Mebendazole is 100 to 500mg for 7 days, although doses for up to a month have been observed. If you need to go this long, then you have a much larger problem.
Try looking in to Praziquantel and Albendazole, as seen in ICU's protocol. It shows positive feedback in most co-infections for parasites.