Xyosmin can treat skin allergies and is a non-sedating, long-acting antihistamine with potent selective antagonism of peripheral blood H1 receptors, which can have a good anti-inflammatory and anti-allergic effect. It is very effective in the treatment of chronic urticaria, atopic dermatitis, and erythema multiforme. It can be applied to children over 12 years of age by taking 1 tablet once a day with meals. Xyosmin has certain side effects during treatment, which can lead to changes in the cardiovascular system, such as prolongation of the Q-T interval, and can also lead to individual allergic reactions, such as angioneurotic edema. Therefore, it needs to be applied with caution when treating, not to be taken with alcohol, and also needs to be treated with caution when applied to the elderly.