Histan Syrup is an antihistamine medication in liquid form used to treat various allergic symptoms. The 100ml syrup formulation is manufactured by Kuwait Saudi Pharmaceutical Industries Co. and is designed to provide relief from allergic reactions. This medication is used to relieve allergy symptoms such as sneezing, runny nose, itchy/watery eyes, and skin reactions. The syrup format makes it easier to administer, especially for children and those who have difficulty swallowing tablets. As with all medications, it should be taken as directed by a healthcare provider and stored at room temperature away from direct sunlight. Common side effects may include drowsiness. Consult your doctor before use if you have any underlying medical conditions or are taking other medications.