OTC allergy meds: Combining Benadryl (diphenhydramine) and zyrtec may make you very drowsy so take it at night. You may like to try fexofenadine or Allegra instead; it's also non-sedating and can be taken once a day. Zyrtec and Claritin have derivatives that can be obtained only by prescription from your doctor. There are also nasal sprays that your doctor may try on you.
Answered 10/4/2016
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