Reception course of at least three weeks. But then you should certainly take a break for a week. Adhere to a diet, exclude fatty, spicy, sour, aggressive food. Eat five times a day, but do not forget that portions should be small. It would be nice if the food was not hard, but a soft consistency. No bad habits, only healthy food, strong sleep, a healthy image of your life, exclude nervous stresses, stressful situations.