Non sedating anti allergic
Most cases of allergic rhinitis respond to pharmacotherapy.
Patients with intermittent symptoms are often treated adequately with oral antihistamines, decongestants, or both as needed.
Zyrtec and Claritin have very few side effects and are generally recognized as safe for most people. Zyrtec can cause sleepiness, but only in some people.
Take it for the first time when you will be at home for a few hours in case it makes you sleepy.
Antihistamines are designed to block the effects of the histamine that your body produces.
These two allergy drugs produce very similar results. Both cetirizine and loratadine are nonsedating antihistamines.
Often referred to as the nonsedating antihistamines.
They compete with histamine for histamine receptor type 1 (H1) receptor sites in the blood vessels, GI tract, and respiratory tract, which, in turn, inhibits physiologic effects that histamine normally induces at the H1 receptor sites.
The observations indicate that non-sedating antihistamines, as opposed to what has been thought previously, may be helpful in patients with allergic rhinitis in whom nasal obstruction is a major concern.
Current international guidelines need to be revised in the light of the recent evidence.