xi xin

[Guest guest]

Karen

 

I didn't see this when you posted it but stumbled on to it in an

unrelated search. I wanted to make sure you saw Andy Ellis' reply to

this specific issue.

 

Andy said, " We have researched Xi Xin and found that the species we

use

is not the one listed by the FDA. We are currently testing it but

doubt

that it contains aristolochic acid. "

 

, Karen S Vaughan <

creationsgarden@j...> wrote:

<<. In fact, it is not possible to practice shang han lun style

herbalism without using mu tong and xi xin. The only option, it would

seem, is to purchase these herbs from someone who can provide a

certificate of analysis>>

 

Well you aren't likely to get one for xi xin because it most probably

does contain aristolochic acid. The omission in Bensky is almost

certainly because it hadn't been sufficiently analyzed rather than

because it is AA-free and the caution for renal failure is a dead

giveaway....The challenge is to find substitutes for xi xin in

formulas

or to find substitute formulas that achieve the same end.

 

I disagree strongly with this last assertion. Xi xin is used long

term

in du huo ji sheng wan, for example, so I think I think the jury is

still out on this one. Du huo ji sheng tang is so widely used

worldwide in so many forms that if AA toxicity was a major risk

factor

for xi xin, we should have heard about it long ago. We'll see.

 

 

 

Karen Vaughan

CreationsGarden@j.