Added ''Pearl'' "Du Zhong and latex allergy" on ''3/13/2008'':
Use extreme caution in prescribing Du Zhong
to patients who are allergic to latex. The quality of Du Zhong
is assessed by the amount of white "stretchy" material between the pieces of bark- the more the better. This "stretchy" material is very similar to latex, and may elicit an allergic response in patients allergic to latex.