The cetirizine and loratadine are among the most commonly used antihistamines that help in the treatment of various allergic reactions. They are used to relieve symptoms of allergic rhinitis, hay fever, and skin allergies, as both effectively reduce histamine levels in the body. These medications block the histamine H1 receptors, thereby reducing inflammation, itching, and runny nose. Allergic reactions are widespread, and many people may experience them, especially in the spring and summer months when pollen levels increase. The choice between cetirizine and loratadine is important not only in terms of effectiveness but also regarding side effects and the method of treatment. Since these medications are available over the counter,…