Claritin and Fatigue: What Users Say

• wit...
• Taken for less than 1 month
• October 14, 2020

For Allergic Rhinitis "Took one 24-hour Claritin on Sunday. Within hours, my itchy eyes and runny/stuffy nose had cleared. Took a second Claritin on Monday. Poor sleep that night. Tuesday morning, getting out of bed, I experienced a terrible backache and the beginnings of a headache that Tylenol didn't touch. Backache lasted all day. Stopped Claritin before my third dose. Today is Wednesday, and I'm feeling zombie-like, fatigued, with lingering back pain. Much as I had hoped this might be my miracle pill, it's not. I'm a 70+ year-old lady in good health who will not be taking this again."

• Wen...
• June 14, 2010

For Allergic Rhinitis "This is the 2nd time in a month that I have suffered from dizziness and fatigue after taking Claritin. My blood pressure has dropped to 96/58, which is low even for me. I have always had lower than normal blood pressure. I last took Claritin on Thursday morning, and this is Monday, and I can finally stand up without feeling dizzy."

• Mar...
• Taken for 10 years or more
• May 13, 2023

For Allergic Rhinitis "I have been on Claritin throughout my youth. It has never failed me and was great. I am 69 years old and very fit, and Claritin just started giving me side effects like waking up with sudden anxiety, being very thirsty, and also fatigued. I tested myself again after a while, and I think it is true. I’m not on any other medication except 8 mg of Candasartan blood pressure meds, which I have been taking for over 10 years. I’m a golfer and work out in the gym. It’s sad to be no longer able to tolerate certain antihistamines."