When I passed the first stage , which is probably where you are , I did Fenbendazole daily 10 mg per kg for 2 weeks for the first time to build up in system then I skipped two weeks , from this point on I did 5 day double doses every 2 weeks , on the 2 week breaks from Fenbendazole I took ivermectin 3 days on 1 day off . I took doxy 2 weeks on 2 weeks off 100 mg twice a day . Fenbendazole doesn't target the adults well so ivermectin is highly recommended for this phase. Doxy has been documented to sterilize the breeders and also speeds up mortality rate of worm . Females can live for up to 6 years , and it is important they are targeted. Encysted ones will replace the adults when they die so continued treatment is necessary , most encysted emerge in the first six months , It is possible to have tens of thousands of these encysted ones .