Yerba Santa, Dried Leaf Clusters, One Pound Yerba Santa, Dried Leaf Clusters, medicinal, rheumatism, A tea made from the leaves was used to treat colds, sore throat, laryngitis, bronchitis, asthma, stomach-ache, vomiting, diarrhea, reduce fevers, and is quite effective as an expectorant and decongestant to relieve coughs.