Generally you need to be off long acting, 2nd generation antihistamines ( zyrtec, allegra, xyzal, claritin) for 7-10 days prior to your appointment.
The short acting, older antihistamines, like Benadryl only need 2-4 days.
Certain nasal sprays, containing antihistamines (Azelastine, Dymista ), will also interfere, and you would have to be off for up to 7 days.
Other allergy medications such as Nasal steroid sprays (flonase, nasacort) and montelukast (singulair) will not interfere with your testing and can be continued.
15725 Pomerado Road #218
Poway, CA 92064
Dr. Zarei is one of the finest. most expert, caring physicians I have ever had, maybe THE finest, and her team, including Naren and Michelle, is wonderful.
Amazing physician and staff! Dr. Zarei always takes the time to explain diagnosis and treatment – to ensure proper patient compliance!
Dr Zarei is very caring, kind, and a very good physician. She takes a detailed history, and takes into account my other current issues. She will follow up, and is very proactive about taking care of you as a person and not just the disease. Will be a patient of hers forever. Her assistant Nerin is amazing as well.
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