Pharmacology Proctored ATI Practice Exam 2025 - Free Pharmacology Practice Questions and Study Guide

The correct classification for drugs like loratadine and cetirizine is antihistamines. This class of medications is primarily used to alleviate allergy symptoms caused by histamine in the body. Antihistamines work by blocking the action of histamine, a chemical released during allergic reactions, which helps reduce symptoms such as sneezing, runny nose, and itchy eyes.

Both loratadine and cetirizine are second-generation antihistamines, which means they are less likely to cross the blood-brain barrier than first-generation antihistamines. This characteristic results in fewer sedative effects, making them a preferred choice for managing allergy symptoms without causing drowsiness.

The other options listed do not pertain to the function of loratadine and cetirizine. Antibiotics target bacterial infections, antidepressants are designed to treat mood disorders, and analgesics are used for pain relief. Each of these classes addresses different health issues and does not relate to the management of allergic reactions.