<s>[INST] I have a serious pinworm infection. I got the prescription for Albendza that says take single dose of 400mg then repeat in two weeks. Was wondering if it will hurt to take 1 week apart instead. So tired of this mess, just want it gone. Took the men s Saturday and still feeling the crawlings [/INST] Hello,I understand your concern. Pinworm infection can be frustrating. The reason why the repeat dose is after two weeks is to prevent reinfection. The reason for this is that pinworm eggs can survive in the surrounding environment for up two weeks.So I strongly recommend you take your second dose of Albendza in two weeks.Also, in order to prevent reinfection, it is mandatory that all the household members be treated too.I hope this helps.Wishing you good health. </s>