Often referred to simply as Pei Pa Koa, the sticky black cough syrup has been produced by Hong Kong-based company Nin Jiom Medicine Manufactory since 1946, but has its roots in the early years of ...

Pei Pa Koa, a popular herbal remedy used by Filipinos ... It is also available in candy form. Cynthia and Ariana lead Wicked as Elphaba Thropp and Galinda Upland, respectively, while Jonathan ...