Alcetriza (Alu) Tablet is an antihistamine used to treat allergic conditions like hay fever, conjunctivitis, skin reactions, and bites and stings. It can be taken with or without food and is usually taken in the evening. Side effects include sleepiness, dizziness, dry mouth, fatigue, and headache. It is generally safe, but side effects may persist or be worsened. Before taking it, inform your doctor about any kidney problems, epilepsy, or other medications. It is also advised to consult a doctor if pregnant or breastfeeding.