Children who are uncooperative, particularly anxious, or unable to control their muscles for prolonged periods, may be offered an oral sedative. Oral sedatives come in many different forms (usually tablets, pills, and liquids), and may make the child feel drowsy. If oral sedatives are to be used, the pediatric dentist may require parents to prepare the child before the appointment. Some common preparatory measures may include: limiting food and fluid intake prior to the appointment, having the child wear comfortable clothing to the appointment, and preparing to stay with the child for several hours after the appointment. Oral sedatives rarely produce serious side effects – nausea is among the most common.