Butabarbital

For trouble in sleeping:
Adults--50 to 100 milligrams (mg) at bedtime.

For daytime sedation:
Adults--15 to 30 mg three or four times a day.
Children--Dose is based on body weight or size and must be determined by your doctor. The usual dose is 2 mg per kilogram (kg) (0.9 mg per pound) of body weight three times a day.

For sedation before surgery:
Adults--50 to 100 mg sixty to ninety minutes before surgery.
Children--Dose is based on body weight and must be determined by your doctor. The usual dose is 2 to 6 mg per kg (0.9 to 2.7 mg per pound) of body weight. However, the dose is usually not more than 100 mg.