Getty Images Antihistamine pills like Zyrtec, Claritin or Allegra are more effective than topical creams, as they calm the body’s overall immune response.
Anti-histamines combined with a decongestant are usually marked with a "D." Claritin-D, Allegra-D, and Zyrtec-D all contain a decongestant called pseudoephedrine, the same active ingredient that ...
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