What is the highest safe dosage for certrizine?

The highest recommended dosage for cetirizine, an antihistamine, is typically 10 mg per day for adults and children over 6 years old. For certain cases, a doctor may prescribe up to 20 mg per day, but this should be done under medical supervision. For children aged 2 to 6, the dosage is generally 5 mg once daily. Always consult a healthcare professional before adjusting any medication dosage.