But in 1. 2002, Hygiene and health center in California in the United States of America declared that the herbal mixture was contaminated with diethylstilbestrol (DES).

• 但是2002年1月,美国加州卫生健康中心检测到该产品被微量的乙烯雌酚(DES)污染,故其疗效是源于草药还是源于微量DES污染颇受争议。