Clarytin syrup cotains 5 mg loratidine per 5 ml .It is available in 100 ml of bottle .It is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Claritin is used to treat sneezing, runny nose, watery eyes, hives, skin rash, hay fever, itching, and other cold or allergy symptoms.