Hi,IVANN.
If you take nitazoxanide,is better to take 5-10 time the recommended dose,if you have resistant strain of parasites.
My resistent strain of trichiuris responds just to elevated level of drug,the problem is here in Europe,that this drug is not introduced in Europe.
I ordered 5 pack of drug from mexico,and must reorder again.
Here is an interesting link for you: http://www.sciencedirect.com/science/article/pii/S2211320712000103