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Tag: Antihistamine tolerance

Explore our medication guides and pharmacology articles within this category.

What stops antihistamines from working?

4 min read
In 2021, nearly one-third of adults in the U.S. reported having a seasonal allergy, eczema, or food allergy [1.7.1]. For many, antihistamines are the first line of defense, but it can be frustrating to find out what stops antihistamines from working when symptoms persist.