Seems to be having allergy as spring has started. Had 2 Claritin 24 in the last 48 hours. However still have itchy eyes. Is it normal and can I contin?

Itchy eyes. with uncontrolled allergy during a problem season, we commonly see itchy eyes for one of two reasons. Either the eyes are excessively dry due to antihistamine use, a common side effect. This is combated by adjusting the antihistamine dose or using artificial tears. If due to allergy, the eyes are both itchy AND watering. OTC eye drops for allergy may help in this case.