在《中药学》等同类书籍中,具有要药、主药、专药之称的药物多见,但迄今这些佳称尚无一定概念,笔者就此阐发粗陋之见。要药,一般指能迅速改善和缓解病情或治愈疾病,经临床验证并公认其效显著的药物。如附子,辛热燥烈,峻补元阳,走而不守,主治亡阳虚脱证,时短效快,为回阳救逆之要药;枳实,苦降下气,气 In the equivalent books of “Chinese Medicine”, there are more and more drugs with the names of medicines, main medicines, and specialty medicines, but so far these good ones have not been given a certain concept, and the author has given a rough idea. To drug, generally refers to drugs that can rapidly improve and alleviate the condition or cure the disease, which has been clinically proven and recognized as effective. Such as Fuzi, Xin hot and dry, Jun Yang Yuan Yang, go without guarding, indicating the death of yang deficiency certificate, when short-term fast, for the back to save the anti-remedies; tamping, bitter gas, gas