How long should someone take collinsonia for chronic sinus problems? What is daily dose recommended? ANSWER
Collinsonia canadensis ('Stone Root') has its effects on the vasculature of the sinus cavity, increasing the tone and strength of the veins (which it also does for the throat, liver and hemorrhoidal veins as well). Because it does not possess anti-histamine like actions, it is safe to take for long periods of time. Results vary from person to person, but most people see improvement within 90 days. Here is a link to the NAP information piece on Collinsonia.
The Ask Dr. D'Adamo internet advice column ran from 1996 to 2009, at which time Dr. D'Adamo's teaching and programming responsibilities no longer allowed him to
devote time and resources to directly answering visitor questions. However we've recently reorganized this treasure-trove of material and made it again available to his readership. He occasionally posts new entries. These are marked with a NEW tag.