Zaditen Sterile Eye Drops is for the relief of itchy, allergy eyes. Preservative free, relief in minutes, lasts up to 12 hours. Zaditen eye drops are for short term treatment of the symptoms of seasonal allergic conjunctivitis (itchy, watery or swollen eyes and/or eyelids). Preservative free, relief in minutes, lasts up to 12 hours. Suitable for adults of all ages and for children from 3 years of age.