Atarax 25mg Injection is an antihistaminic medication. It is utilized to treat symptoms of skin allergy such itching, swelling, and rashes. It is also utilized to treat anxiety and helps to get relaxed before or after surgery. Atarax 25mg Injection is given as an injection under the supervision of a doctor. The dose and how often you take it depends on what you are taking it for. Your doctor will decide how much you need to improve your symptoms. The most common side effects of this medication include sedation, nausea, vomiting, stomach upset, and constipation. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. You must avoid driving or attention-seeking activity while on treatment.