Buhner suggests Mountain Rose herbs to purchase red root. I just purchased some other herbs from them just last week and had a good experience, so I would recommend them as well, although you might be able to find a great product through other sources that are less expensive, so shop around a bit. There is a list of online stores that some members have had good experiences with in the "New to Lyme?" thread.
Here is a link to Mountain Rose's red root tincture in case you are interested: /www.mountainroseherbs.com/products/red-root-extract/profile
Herb only treatment for Lyme & Bart ended 12/11 - no active symptoms for 2 yrs -Herb only treatment for Babesia ended 12/12www.healingwell.com/community/default.aspx?f=30&m=2977364
Had Lyme, Bart, Babs, RMSF, Ehrlichia, Myco, Anaplasmosis, EBV
New Lyme case 8/2014 - Healed 1/31/15
*I can usually post a link to any info that I post. Wish to see a link? Please just ask!