Fenistil Drops is an antihistamine medication containing dimethindene maleate, designed to provide relief from various allergic conditions. This 20ml oral solution helps treat symptoms like itching, hives, hay fever and other allergic reactions through its antipruritic and antiallergic properties. The active ingredient dimethindene maleate works by blocking histamine, which causes allergic symptoms. Dosage varies by age: adults and children over 12 years typically take 20-40 drops 3 times daily; children 3-12 years: 15-20 drops 3 times daily; children 1-3 years: 10-15 drops 3 times daily; infants 1 month to 1 year: 3-10 drops 3 times daily. Not recommended for newborns under 1 month. The medication can be used to treat allergic skin conditions, respiratory allergies, food and drug allergies, and insect bites.