My daughter started druling

Hi!!
I am kind of confused. I started my daughter on zymex II, since she had some sort of a tapeworm. She stopped having stomach pain. I started her on a diet and Barefoot's dewormer and LBB. I had 3 rounds of zymex II. Recently she started having abdominal pain again and druling and anal itching. I am suspecting the parasites are not dead yet. I started again the zymex II this morning. I am wondering if I should continue the barefoot's dewormer or give her a break. She has been on the dewormers almost 2 months.