Social media users are only now learning of Nin Jiom Pei Pa Koa, or dragon blood as one man calls it, a herbal Chinese medicine that is said to cure coughs and sore throats. Though we have come far since the days of prescribing milk of the poppy for just about every health ailment, ancient medicinal secrets are still used today. From the humble curative properties of a dock leaf, which can also be found in other leafy greens, to the continued employment of leeches, many ancient remedies formed the structure for modern medicines. What is the cough remedy Nin Jiom Pei Pa Koa?During a recent appe…