A 48-year-old member asked:

Too tired to drive. i've been looking at allegra-d and zyrtec-d. which one would you recommend?

1 doctor answer • 1 doctor weighed in

Dr. Thomas Kleinanswered

Allergy and Immunology 42 years experience

Allegra (fexofenadine) 180 mg: Zyrtec may cause drowsiness. Allegra (fexofenadine) does not cross into the brain and should not cause drowsiness. The "d" component is a decongestant and may cause insomnia, decreased appetite, high blood pressure and in men - urinary difficulties due to prostate issues so I do not prefer the Allegra (fexofenadine)-D products. Visit my website at www.Kleinallergy.Com for more info.

5.3k viewsAnswered >2 years ago

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Last updated Mar 29, 2015

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