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.

How Long Does Children’s Benadryl For Allergies Takes To Show Effect ?

Has anyone’s child taken this before for allergies? How long did it take before showing the results?

How Long Does Children’s Benadryl For Allergies Takes To Show Effect ?

Has anyone’s child taken this before for allergies? How long did it take before showing the results?

What Are The Cause And Effect Of Food Allergies?

I am doing a project on food allergies and I need to know the cause and the effect of food allergies.