Fenistil Drops is an oral antihistamine medication containing dimethindene maleate. It provides relief from allergic reactions through its antipruritic, antihistaminic, and antiallergic properties. The 20ml solution is administered orally to treat various allergic conditions. The active ingredient dimethindene maleate works by blocking histamine receptors to reduce allergic symptoms. The drops can be used to treat allergic skin conditions like urticaria and eczema, respiratory allergies like hay fever, and provide relief from insect bites. Dosage varies by age - adults and children over 12 years typically take 20-40 drops 3 times daily, while specific lower doses are recommended for children 1 month to 12 years old. The medication should not be used in newborns under 1 month or in cases of hypersensitivity to ingredients.