Histabil Tablet contains Bilastine 20 mg, a second-generation antihistamine indicated for the symptomatic treatment of allergic conditions such as allergic rhinitis and chronic urticaria. Bilastine acts as a selective peripheral H1 receptor antagonist, effectively inhibiting the action of histamine, thereby alleviating symptoms including sneezing, nasal congestion, rhinorrhea, itching, and hives. Due to its minimal penetration of the blood-brain barrier, Bilastine exhibits a low incidence of sedation and central nervous system side effects compared to first-generation antihistamines. Histabil is administered orally, with a recommended dosage of 20 mg once daily, preferably on an empty stomach to optimize absorption. It demonstrates a rapid onset of action and a duration of effect suitable for once-daily dosing, enhancing patient compliance. The drug is well-tolerated, with adverse effects generally mild and infrequent, including headache, dizziness, and gastrointestinal disturbances. Caution is advised in patients with severe renal impairment, and use during pregnancy and lactation should be under medical supervision. Histabil Tablet offers an effective and safe therapeutic option for managing allergic symptoms, improving quality of life in affected patients through targeted histamine receptor antagonism without significant sedation or anticholinergic effects.