Alday Tablet contains Cetirizine as its active moiety. Alday Tablet is used to provide relief from various allergic conditions characterised by a runny or blocked nose, watery eyes, fever, rash, sinus and the common cold. It is an anti-allergic medicine belonging to the anti-histamine class of medicine. Cetirizine blocks histamine which is a natural chemical substance responsible for allergic conditions. This medicine should not be used in children below 6 years of age and also in patients with kidney disease. You may experience dizziness, sleepiness, drowsiness while on this medicine, thus avoid driving. If these symptoms worsen, inform your doctor or visit a nearby clinic.