According to the card, 2 tablespoons of the rhizomes are poured over with 0.5 l of boiling water in the evening and left to steep in a thermos. The next day the infusion is drunk warm in 3 portions 20-40 minutes before meals. The card does not name the length of the course.
General information (not a manufacturer's instruction): it is better to keep the finished infusion in a cool place and not use it for more than a day; if in doubt about the dose, ask a doctor.