Buhner's Healing Lyme 2nd Ed. says (p. 379) Stephania tetandra or Stephania cepharantha.
Same book, p. 380, says dosage for Lyme arthritis and/or neuro-Lyme should be:
Powdered herb: 1-4 "00" capsules
Tincture (1:5, 65% water/alcohol solution): 1/2 teaspoon 3x/day
for a list of companies through which the herbs can be obtained. Stephania root is listed, but you have to scroll way down the page almost to the end to find it.
Lyme & Bart.; too many health issues to list...