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Fexofenadine and Insomnia: What Users Say

Brand names: Allegra, Allegra Allergy, Allegra Hives, Aller-Ease, Allegra ODT

Insomnia: mentioned by 5 users (2.7%)

Based on user experiences from 183 Fexofenadine reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

drowsiness 9.3%
itching 8.7%
dizziness 4.4%
headaches 4.4%
nausea 4.4%
anxiety 3.3%
insomnia 2.7%
vivid dreams 2.7%
panic attacks 2.2%
rash 2.2%

Reviews for Fexofenadine

Showing 5 reviews tagged with "insomnia". Clear filters to view all 183 reviews.
Commonly mentioned side effects
  • Tir...
  • Taken for less than 1 month
  • November 27, 2022

For Urticaria "Took Telfast 180 mg. Gives some relief for allergies, but the side effects are horrible. Severe headache, anxiety, agitation, dry eyes, intense nightmares, insomnia, aches and pains, exhaustion. I was a terrified, angry mess on it that could not sleep or focus."

2 / 10
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9 Report
  • bda...
  • March 29, 2011

Fexofenadine for Allergic Rhinitis "Recently, I have been having very bad allergies and went to the doctor. She said that I should try Allegra (not Allegra-D) and that it is available over the counter. I went to the store but could not find any adult 12-hour Allegra. This disappointed me because I knew the 24-hour pills usually don't work. I went ahead and bought the smallest package of pills I could get (5) of the 180 mg dosage. I took one, and it cleared up my symptoms and made me feel better, but that night I woke up after about 4 hours of sleep and could not get back to sleep. I didn't take one the next day as I wanted to get a good night's rest. Yesterday, I took another, and the same thing happened again. I just want to sleep!"

7 / 10
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32 Report
  • Anonymous
  • Taken for less than 1 month
  • July 6, 2016

Fexofenadine for Allergic Rhinitis "I received this medication as a free sample via U.S. mail. It cleared my sinuses for 24 hours, but I was also bolt awake for 24 hours, like I was on some kind of stimulant. I would take it in severe sinusitis attacks, but not for routine allergy treatment. It also dried my sinuses out so badly that I was afraid I'd get a nosebleed for days afterward."

1 / 10
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9 Report

Frequently asked questions

  • niv...
  • August 13, 2010

Fexofenadine for Allergic Rhinitis "Allegra is really good at working for hay fever, but I have been using antidepressants for about two years, and I am having some sleeping problems now. Using Allegra is making it hard to get to sleep early."

6 / 10
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19 Report
  • All...
  • Taken for 1 to 6 months
  • June 28, 2022

For Urticaria "This drug is highly addictive. Once you stop taking it, you start having withdrawal symptoms: chest pains, headaches, and disturbed sleep. It takes a couple of weeks to get out of your system."

9 / 10
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5 Report

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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.