TCM Materia Medica
The TCM herb "huang yao zi" which in english is "dioscorea bulbifera tuber", is categorized within the "herbs that cool and transform phlegm heat" functional grouping. It is thought to enter the heart, liver and lung channels and exhibits bitter (ku) and neutral (ping) taste/temperature properties.
Dosages and preparations will vary according to each individual and the overall approach of a formula, but generally this herb has the following dosage and/or preparation guidelines:
Of many possible clinical applications, it may be considered to influence the following issues/symptoms:
As noted above, huang yao zi is within the herbs that cool and transform phlegm heat functional group. All the herbs in this category are listed below.
(truncated intro "... used for phlegm-heat and dry-phlegm patterns - coughs, scrofula, goiters (stagnant phlegm-fire in the channel), convulsions. )".