In the event that you have pinworms I read a few days ago that they should be treated once a week for a YEAR to get rid of them. I am using all of the meds I have orally and nasally with neti pot in boiled cooled water. I am doing ALL drugs every week and this is my second week. I have been very sick again, Lungs nose eyes legs etc..Wish me luck cause on my last crusade I think. xoxo