It differs by goal.

Getting through acute symptoms is a matter of short use, and if the goal is reducing the pattern of recurrence at every change of season, we view it in units of months. It often has to be judged over a full turn of the seasons.

We do not use the first prescription unchanged to the end. Early on the focus is on symptoms such as cough and sputum, and once it settles the direction shifts towards reducing recurrence. We adjust while watching the course at two- to four-week intervals.

If your digestion becomes uncomfortable or your stool pattern changes while taking it, please tell us.