Claritin-D 12 Hour User Reviews & Ratings

• con...
• August 11, 2009

For Nasal Congestion "Best decongestant I have ever taken. As effective as any sinus rinse, but a lot less annoying to take a pill! One slight side effect: minor headaches. Do not take Claritin D-24 on a daily basis - it is too strong and caused dizziness."

• DJa...
• Taken for 1 to 6 months
• March 5, 2016

For Nasal Congestion "After suffering with nasal congestion and trying a variety of allergy medicines, I tried using Claritin-D. Although it didn't clear up the nasal congestion, at first I did seem to feel better. THEN, the side effects started: extreme dry mouth, stomach pain, headaches, feeling nervous, faster heart rate, constipation, tingly feeling under my skin, insomnia, urinating less than usual. After quitting the medicine, I also had high blood pressure, fear and anxiety (I was afraid to be alone, so my grown children came to stay with me several days). I wouldn't take it again!!!"

• Kat...
• Taken for 10 years or more
• March 18, 2023

For Allergic Rhinitis "I've taken Claritin D-12H for years. The drainage down my throat and stuffy nose disappears. Tried the 24-H formula and had inconsistent results in those 24 hrs. Doesn't cause me to be hyper or awake. Claritin D-12H is truly the best! I'm 61 years old and have tried other alternatives when Claritin D-12H is not available and not gotten close to the relief of Claritin D-12H. Makes life enjoyable again."

• Flo...
• Taken for less than 1 month
• March 5, 2022

For Nasal Congestion "Works well, keeps my sinuses clear. I breathe great after taking it. It is a bit stimulating, just like Zyrtec D, but not problematic. But if you are sensitive concerning that, be careful. Good therapy for allergies and angry sinuses, LOL."

• swe...
• June 26, 2019

For Allergic Rhinitis "Doctor recommended Claritin D because of constant post-nasal drip and burning pain in chest. After taking it for two weeks, the drip did not stop, the chest pain got worse, and I experienced more episodes of irregular heartbeats. No more Claritin D for me."

• Anonymous
• Taken for less than 1 month
• May 21, 2019

For Nasal Congestion "I took loratadine with pseudoephedrine for a sinus infection, and it’s working great so far. It gave me night sweats because of the antihistamine in it, just like Benadryl does sometimes to me. I just woke up and had to grab a towel to lay on in bed."

• ann...
• Taken for less than 1 month
• September 18, 2021

For Allergic Rhinitis "OMG, this is the worst. Helped the foggy head, but the side effects are not worth it. Headache, shaking, dry mouth, trouble with deep breath. Still have hours before this wears off. Any worse and I am off for urgent care."

• Kat...
• August 31, 2015

For Allergic Rhinitis "Sneezing, itchy eyes, and runny nose, terrible allergy attack. Normally I take Benadryl or one with diphenhydramine in it, but I didn't want to be tired all day, so I took Claritin-D 12 hour. BIG MISTAKE! It took 5 hours before it even started easing my allergy symptoms, and it still hasn't completely gotten rid of them, but I am stuck not being able to take anything else for another 6 1/2 hours. I would never recommend this!"

• pea...
• Taken for 10 years or more
• November 4, 2019

For Nasal Congestion "12-hour Claritin D has worked wonders for me. It clears all the congestion in my head from my allergies and it produces no ill side effects for me. Through the years, I have had bad reactions to Benadryl, Sudafed, and a prescription decongestant, but for whatever reason, 12-hour Claritin D is perfect for me. I take one tablet daily."

• Anonymous
• December 2, 2011

For Nasal Congestion "When I have a cold that blocks sinuses, ears, and chest, this is what I take."