Medications to Stop Before Your Test

Carefully review the medication list below and follow the instructions on when to stop the medications that interfere with allergy testing.  If the medication that needs to be stopped was not prescribed by your Texas Ear, Nose & Throat Specialist doctor, contact the prescribing doctor to confirm that you may safely stop taking the medication for the duration required prior to testing.

Medications to Stop Before Your Test:


Three weeks (21 days) prior to testing stop taking:

  • Atarax
  • Hydroxyzine
  • Vistaril

Two weeks (14 days) prior to testing stop taking:

  • Allergy shots

One week (7 days) prior to testing stop taking:

  • Sublingual drops
  • Beta Blockers- click for information
  • Astelin (nasal spray)
  • Astepro (nasal spray)
  • Azelastine (nasal spray)
  • Claritin

  • Clarinex
  • Dymista
  • Lortadine
  • Optivar (eye drops)
  • Patanase (nasal spray)
  • Patanol (eye drops)


Three (3) days prior to testing stop taking:

  • Acrivastine
  • Allegra
  • Astemizole
  • Atrohist
  • Azatadine
  • Benadryl
  • Bromfed
  • Brompheniramine
  • Cetirizine
  • Chlorpheniramine
  • Codimal DH Syrup
  • Cyproheptadine
  • Dimetane Cough Syrup
  • Diphehydramine
  • Dura-vent
  • Extendryl
  • Fexofenadine
  • Hycomine Compound
  • Kronofed
  • Methscopolamine

  • Nolamine
  • Nolahist
  • Periactin
  • Phenergan
  • Phenidamine
  • Promethazine
  • Pyrilamine
  • Rynatan
  • Rynatuss
  • Semprex
  • Sinulin
  • Travist
  • Trinalin
  • Tussionex
  • Tylenol Allergy
  • Tylenol Cold/Flu
  • Tylenol PM
  • Xyzal
  • Zyrtec


Forty eight (48) hours prior to testing stop taking:

  • Cough syrups, allergy medications, cold remedies, anti-itching and sleep aids..
  • Celebrex
  • Mobic
  • Naprosyn

Twenty Four (24) hours prior to testing stop taking:

  • Aspirin, Advil, Aleve, Excedrin, Ibuprofen
  • Axid
  • Cimetadine
  • Pepcid
  • Ranitidine
  • Tagament
  • Zantac
  • ZyfloTagament
  • Zantac
  • Zyflo