question: Hi! I thought I had a yeast infection for two weeks, only to later figure out I have pinworms. I took Reece medication a week ago, and although I have had some improvement- symptoms persist. I know it is recommended to take a second dose next week. I kept feeling something so I re-did a tape test to only to find an actual threadworm! Grossing myself out completely. How long does Reece take to eliminate this problem. Do I need to get a prescription strength medication?