Claritin-D 12-Hour is a popular over-the-counter medication that combines the antihistamine loratadine with the decongestant pseudoephedrine. This combination provides relief from allergy symptoms such as sneezing, runny nose, itchy/watery eyes, and nasal congestion for up to 12 hours.

Loratadine works by blocking the action of histamine, a substance in the body that causes allergy symptoms. Pseudoephedrine works by narrowing blood vessels in the nasal passages, reducing swelling and congestion. Together, these two ingredients provide effective relief from both nasal congestion and other allergy symptoms.

It is important to follow the dosing instructions provided on the packaging or by your healthcare provider. Taking more than the recommended dose can lead to serious side effects, including increased heart rate, high blood pressure, and insomnia.

Some common side effects of Claritin-D 12-Hour may include dry mouth, headache, dizziness, and nausea. If you experience any severe side effects such as difficulty breathing, chest pain, or a rapid heartbeat, seek medical attention immediately.

It is important to note that Claritin-D 12-Hour may not be suitable for everyone. It is important to talk to your healthcare provider before starting this medication, especially if you have certain medical conditions such as high blood pressure, heart disease, or thyroid problems.

Overall, Claritin-D 12-Hour can be an effective option for managing allergy symptoms and nasal congestion. However, it is important to use it as directed and consult with your healthcare provider if you have any concerns or questions.