Welcome to Healthcare Magic Are you taking this Cetrizine tablet because of the itching. How many tablets do you take in a day and how many days a week. Please explain your problem as to why you are taking this. This medicine is known to cause sleepiness, drowsiness, urinary retention, dry mouth and throat, cough, constipation, allergic reactions which can include rash and difficulty breathing. It would be best to apply soothing lactocalamine lotion to relive the itch as well and avoid sun exposure. Eat plenty of fresh fruits and green leafy vegetables. Drink plenty of water. Consult a Dermatologist for proper diagnosis and management of this issue with proper solution.