If you are lucky and mebendazole has an effect on your worms, then 3 pks of 6 is not enough. See what happens and order more or try the Eruopean batch. Mebendazole did nothing for me, and I had Ascaris type worms. Others, it helped or gave them some relief while they searched for something else. Killing parasites is not a 3-6 or 30 day thing.
If you see worms taking it, then that is your biggest problem, hindering recovery from other bugs that may be inside your body. Just see how it goes.