Claritin is used for relief of allergy symptoms that is generally caused by both seasonal and indoor factors including pets, hayfever, pollen, dust and mould. It helps Canadians with temporary allergy relief to be more alert and focused every day! Claritin is an effective, fast acting allergy medicine that is available in 12-hour and 24-hour strengths. Plus, Claritin comes in a variety of forms -- caplets, rapid dissolve tablets, spray and syrup -- to help keep you and your family symptom-free!