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Allegra and Weakness: What Users Say

Weakness: mentioned by 3 users (3.2%)

Based on user experiences from 95 Allegra 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 13.7%
itching 8.4%
dizziness 4.2%
nausea 4.2%
headaches 3.2%
rash 3.2%
runny nose 3.2%
sore throat 3.2%
weakness 3.2%

Reviews for Allegra

Commonly mentioned side effects
  • Jca...
  • Taken for 1 to 6 months
  • August 20, 2019

For Allergic Rhinitis "I have taken Allegra the past few years during ragweed season, which I am allergic to. I take it at night, so I do not have drowsiness during the day. I find it effective but have one major problem, which is a side effect that has caused me to stop taking it - joint pain and weakness, especially in my ankles. It became unbearable. As soon as I stopped taking it, it went away. I noticed the correlation last year but thought it was a coincidence. Now I know it's not. Pharmacists and Drs, please pay attention to this very real and perhaps more common than thought side effect."

7 / 10
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55 Report
  • MSA...
  • Taken for 1 to 2 years
  • January 12, 2022

For Allergic Rhinitis "Took for about a year for allergic asthma allergies before I realized when I ran out and started something else that I no longer need a walker to walk, and I regained all the strength in my legs!!! The whole time I was told no one knew why I slowly lost my ability to walk or function, and even my allergist never suspected the Allegra, but once I stopped the drug, my weakness went away… horrible, horrible."

1 / 10
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30 Report
  • Ric...
  • Taken for less than 1 month
  • February 7, 2021

For Allergic Rhinitis "I have bad allergies to a lot of things: food, dust, animals, pollen. The list goes on. While at the doctor's office, he gave me a 5 mg Xyzal. It cleared up my nose within the hour, and I could breathe the rest of the day. The doctor suggested taking Allegra 12 hour. So I bought some and planned on taking it the next day. That night I was really tired before bed. Went to sleep. I woke up about 7 a.m. and stayed in bed almost the entire day. I was completely drained of energy. At 3 p.m. I took the Allegra. The package says 'non-drowsy'. By 4 p.m. I was so weak I felt like I was getting anesthesia. I had to be at work by 5 p.m. I drank some tea, hoping the caffeine would help. For the next few hours I struggled hard. I was completely drained of energy and my head felt foggy. It was horrible. At the 6-hour mark, I was less tired. Woke up today and decided not to take another one. What a nightmare that was. So much for 'non-drowsy'."

5 / 10
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19 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.