I got nitazoxanide from medsmex.com. It was 20 bucks for 6 500 mg pills. Good price. recieved within two weeks. I would advise to do the full two weeks 6 pills a day. 5 to 7 days wasn't enough time to kill everything, the ones that survived are pretty pissed off. You will need 14 boxes. This med is truely systemic, the most systemic drug I have tried. It is very strong yet gentle. It is a cleanse in itself, no need to take additional cleanses while taking it. I would reccomend taking your herbs and vitamins, thats it. Best drug at absorbing toxicity, wonderful drug.