Allegra and Nausea: What Users Say

• Ale...
• Taken for 2 to 5 years
• January 12, 2020

For Allergic Rhinitis "So, my body has a very high natural histamine level, which means that I will break out in hives with feet and hand swelling almost every day. There’s no cause, my histamine levels tend to just be high. A long time ago, my sister used to use this medicine for the same condition. Therefore, when I started breaking out, my mom recommended this to me. As soon as I started taking it, it was truly a miracle. It works so quickly and efficiently to relieve my hives and remove the swelling to allow me to be able to walk on my feet properly. I have zero side effects. It’s just a medicine that does its job: no drowsiness, no nausea. I accidentally double-dosed once, and not a single problem happened. It’s an incredible medicine. I’m thankful for Allegra/fexofenadine."

• cle...
• May 23, 2013

For Allergic Rhinitis "Allegra stops the drainage and the annoying need to clear my throat (post nasal drainage). But I'm dizzy these last couple of weeks since I've started it. I have a mild sore throat and headache, which I experienced previously when trying Allegra. I feel tired, nauseous, and have had a strange tingling in my legs occur twice this week. I'm thinking Allegra is not a good choice for me, despite its effectiveness."

• Nau...
• September 22, 2016

For Allergic Rhinitis "I took two 180-mg doses of Allegra for hay fever on two consecutive nights. The day after the first dose, I experienced mild, intermittent nausea and reduced appetite. The morning after the second dose, I was bedridden for 3 days with severe nausea, intermittent sweats and chills, aberrant thoughts and dreams, and a headache. I did not vomit or have diarrhea, nor did I have an abnormal temperature. As I write this on the fourth day, I am just getting up and eating a little. This was like no stomach flu I've ever had -- I feel as though I have been poisoned. I firmly believe that my illness is a side effect from the Allegra."

• Mis...
• Taken for 1 to 6 months
• August 10, 2022

For Allergic Rhinitis "I have had a lot of trouble finding a newer antihistamine that works well for me. I have tried all the 24-hour ones, and Allegra seemed to be the right fit, but I had to stop taking it when I noticed yucky side effects. I realized that it was causing GI issues, such as abdominal cramps, nausea, and diarrhea. I was also getting dizzy spells out of the blue. When I don't take the Allegra, I'm fine. It's a catch-22 because it does seem to help with my post-nasal drip, but it's not worth having GI issues over."

• Ano...
• Taken for 2 to 5 years
• May 8, 2025

For Allergic Rhinitis "Allegra has been the best OTC antihistamine for me. I've had a minor increase in headache frequency since taking it, but this is far preferable to the side effects I've had from other allergy meds (like extreme drowsiness and nausea). The Allegra keeps me from sneezing and dripping snot all day, as well as makes it much easier for me to breathe!"