Usual Adult Dose for Obesity:
120 mg orally three times a day with each main meal containing fat. The dose may be taken during the meal or within 1 hour of completing the meal.
Usual Pediatric Dose for Obesity:
12 years or older:
120 mg orally three times a day with each main meal containing fat. The dose may be taken during the meal or within 1 hour of completing the meal.
 Detailed Xenical dosage information
What happens if I miss a dose?
Take the missed dose as soon as you remember, but no more than 1 hour after eating a meal. If it has been more than an hour since your last meal, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
