Hai Zao Chinese Herb | Seaweed Herb - Suitable to Cool & Transform Phlegm Heat - Medicinal Grade Chinese Herb 1 Lb Hai Zao Chinese Herb, Seaweed Herb to Cool & Transform Phlegm-Heat Geo authentic herbs, sulfur free, lab tested and sourced indigenously It helps to clear heat, reduce phlegm and swellings Seaweed is a bitter and salty herb of a cold nature Medicinal Grade Chinese Herb