Does the body get used to allergy pills and then won't make any effect?

Like for example if I take one pill daily for spring allergies. Then the pills won't take effect into my body and my allergy would worsen?

I say this because I took one pill daily over two weeks, and the last days it wasn't getting as effective as it was before.

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Answer:
Yes. Its like a disease, we get immune to it over time, The best thing to do is take the pills for lets state mon-fri, and on sta-sun, u don't take anything. This will give ur body the chance to flush the drug out of your system, and calm down. if that doesn't work, take them for one week, and than stop for one week.

hope this helps!

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Answer:
I used to have that problem. What you need to do is change brands of antihistamine for a couple of weeks. After that, the first medication will work again for a couple of weeks.