I have been using doxy, albendazole, oxi and fenbendazole, moxidectin, levamisole, DEC, piperazines, alinia, ivermectin, pyrantel for the roundworms. I take a mix of these daily and some monthly or periodically. I also take naturals and i do enemas.
I also take DE 2-3 times a day which limits their activities around the digestive tract. DEC and piperazines slow them down. I suggest DE together with meds. You also need to work on your immune system and detox at the same time. Levamisole kills them directly.