Core Viewpoint - The article discusses the safety of antihistamines and nasal steroids used for allergy treatment, clarifying that they do not cause addiction and emphasizing the importance of consistent medication use to prevent worsening allergy symptoms [1][3]. Group 1: Antihistamines and Nasal Steroids - The main types of antihistamines available in the market are second-generation antihistamines, such as cetirizine and loratadine, which do not affect the central nervous system [3]. - Nasal steroids, commonly used for allergies, act locally and do not enter systemic circulation, further ensuring their safety [3]. Group 2: Side Effects and Precautions - Some antihistamines may cause drowsiness and impaired concentration, which poses risks for individuals engaged in high-concentration tasks such as operating machinery or driving [5].