禀土金之气以生。生者味辛性冷，熟者味甘温平，故下气消谷去痰癖。肥健人及温
中补不足，宽胸膈利大小便，化痰消导者，煮熟之用也。止消渴制面毒，行风气，去邪
热气，治肺痿吐血肺热，痰嗽下痢者，生食之用也。入手足太阴，阳明经，故所主皆脾
肺肠胃之病，但性专下气，复能耗血多食，则髭发早白，服地黄首乌者不可食。子味辛
过于根，生研汁服吐风痰，同醋研消肿毒，熟食下气，定喘消食，除胀止气痈，其性辛
甚，故升降亦烈，于根治痰有推墙倒壁之功矣。
莱菔根，啖可生，叶啖须煮，制白面豆腐二毒，忌首乌地黄同餐，倘误犯之，须发
易白。消谷食，去痰癖，止咳嗽，解渴消，捣生汁磨墨，下咽止吐血，下血甚捷，《衍
义》云∶散气用生姜，下气用莱菔，但煮食多者，亦停膈间，以成溢饮之症，盖味甘多
辛少故尔。子劫喘咳下气，治痰倒壁冲墙，水研服即吐风痰，醋研敷，立消肿毒，入肺
下气而定喘，入脾消食以宽膨，生则能升可吐，熟则能吐可利。
按∶丹溪曰∶莱菔子，治痰有推墙倒壁之功，虚弱人服之，气浅难以布息，昔胡僧
入中国，见人食面惊曰∶“食之，安不得病？”及见食莱菔，乃曰∶“赖有此耳。”又
洞微志云∶有人病狂，梦中见红衣女子，引入殿中，小姑歌云∶五云楼阁晓玲
珑，天府由来是此中。惆怅闷怀言不尽，一丸莱菔火吾宫。一道士云∶此犯大麦毒也。红衣女
心神也，小姑，服神也，莱菔制面毒，故曰∶火吾宫也。遂以药及莱菔子。治之果
愈。嗣是治面积，颇着神异。
莱菔根禀受土和金二气而生。生吃味道辛、性质寒凉，煮熟后味道甘、性质温和平正，因此能降气、助消化、去除痰癖。对于身体肥壮健康的人以及需要温中补虚的人，通过煮熟食用可以宽胸膈、通利大小便、化痰消导，这是熟用的功效。用于止消渴、制约面食之毒、行散风气、去除邪热之气，治疗肺痿吐血、肺热、痰嗽、下痢等症，这是生食的功效。莱菔根入足太阴脾经、手太阴肺经、足阳明胃经和手阳明大肠经，所以它主治的病症都与脾、肺、肠胃有关。但因其药性专于降气，如果多食会耗伤血液，导致胡须头发过早变白，服用地黄、何首乌的人不可食用。
莱菔子的味道比根部更辛烈，生研取汁服用可催吐风痰，与醋同研外敷可消肿毒；熟食可降气、定喘、消食、消除胀满、制止气痈。其性味非常辛烈，所以升降作用也很猛烈，在根治痰饮方面有推墙倒壁般的强大功效。
莱菔根可以生吃，叶子必须煮熟才能吃。它能制约白面和豆腐这两种食物的毒性，忌讳与何首乌、地黄同餐，如果误犯禁忌，会导致须发变白。它能消解谷食、去除痰癖、停止咳嗽、解除口渴。将生莱菔捣烂取汁，用来磨墨，咽下后可迅速止住吐血和下血。《衍义》中说：发散气滞用生姜，降气用莱菔。但如果煮食过多，也会在胸膈间停滞，形成溢饮的症状，这是因为莱菔味甘而辛味少的原因。
莱菔子能劫夺喘咳之气、降气，治疗痰饮有推墙倒壁之功，用水研磨服用即可吐出风痰，用醋研磨外敷，能立即消肿毒。入肺经可降气定喘，入脾经可消食宽膨。生用时能升提并可催吐，熟用时能降下并可通便。
按语：朱丹溪说：莱菔子治疗痰饮有推墙倒壁的功效，但虚弱之人服用，因元气浅薄难以布息，会有危险。从前有一位胡僧来到中国，看见人吃面食惊恐地说：“吃了这个，怎么能不得病？”等到看见人吃莱菔，才说：“幸好有这个（来化解）。”又据《洞微志》记载：有人患狂病，梦中见到红衣女子，将他引入殿中，小姑唱歌道：“五云楼阁晓玲珑，天府由来是此中。惆怅闷怀言不尽，一丸莱菔火吾宫。”一位道士说：“这是犯了大麦的毒。红衣女子代表心神，小姑代表服神，莱菔能制约面毒，所以说‘火吾宫’（烧掉我的宫殿/心神）。于是用药及莱菔子治疗，果然痊愈。从此以后，治疗面食积滞，莱菔子颇显神异。”
Radish Root (Laifu Gen) is born from the Qi of Earth and Metal. When raw, its taste is pungent and nature is cold; when cooked, its taste is sweet and nature is warm and neutral. Therefore, it descends Qi, aids digestion, and eliminates phlegm accumulation. For robust individuals or those needing to warm the middle and tonify deficiency, cooking it allows for widening the chest and diaphragm, promoting urination and defecation, resolving phlegm, and aiding digestion; this is the use of cooked Radish Root. To stop thirst, counteract the toxicity of wheat flour, circulate wind-qi, eliminate pathogenic heat, treat lung abscess with hemoptysis, lung heat, cough with phlegm, and dysentery, these are the uses of raw consumption. It enters the Foot-Taiyin Spleen, Hand-Taiyin Lung, Foot-Yangming Stomach, and Hand-Yangming Large Intestine meridians. Thus, it primarily treats diseases of the Spleen, Lung, Stomach, and Intestines. However, since its action is specifically to descend Qi, excessive consumption depletes Blood, causing premature whitening of beard and hair. Those taking Rehmanniae Radix (Dihuang) or Polygoni Multiflori Radix (Shouwu) should not consume it.
The seeds have a more pungent flavor than the root. Raw juice extracted by grinding can induce vomiting of wind-phlegm; mixed with vinegar and applied externally, it reduces swelling and detoxifies. Cooked, it descends Qi, calms asthma, aids digestion, removes distension, and stops qi-abscesses. Its nature is extremely pungent, so its ascending and descending actions are vigorous. In treating phlegm, it has the power to "push down walls and overturn battlements."
Radish Root can be eaten raw; leaves must be boiled before eating. It counters the toxicity of white flour and tofu. It is contraindicated to eat together with Polygoni Multiflori Radix (Shouwu) and Rehmanniae Radix (Dihuang); if mistakenly consumed, hair and beard may turn white. It digests food, removes phlegm accumulation, stops cough, and relieves thirst. Crushed raw juice used to grind ink, when swallowed, stops hemoptysis and hematochezia very quickly. *Yanyi* states: "To disperse stagnant Qi, use Ginger; to descend Qi, use Radish." However, excessive consumption of cooked Radish may cause stagnation in the chest and diaphragm, leading to overflow-dampness (Yiyin), because its sweet taste predominates over its pungency.
Radish Seeds (Laifuzi) resolve asthma and cough, descend Qi, and treat phlegm with the power to "push down walls and overturn battlements." Ground with water and taken orally, it induces vomiting of wind-phlegm; ground with vinegar and applied externally, it immediately reduces swelling and detoxifies. Entering the Lung, it descends Qi and calms asthma; entering the Spleen, it aids digestion and relieves bloating. Raw, it ascends and can induce vomiting; cooked, it descends and can promote bowel movement.
Commentary: Zhu Danxi said: "Radish Seeds treat phlegm with the power to 'push down walls and overturn battlements.' However, weak individuals who take it may find their Qi shallow and breathing difficult." Once, a Hu monk entered China. Seeing people eat wheat noodles, he exclaimed in alarm, "Eating this, how can one avoid illness?" But upon seeing people eat Radish, he said, "Fortunately, there is this [to counteract it]." Also, *Dongwei Zhi* records: A person suffered from mania. In a dream, a woman in red clothes led him into a hall. A young girl sang: "Five-colored pavilions shine clear at dawn, The Heavenly Mansion has always been here. Melancholy and stifled feelings cannot be fully expressed, One pill of Radish burns my palace." A Daoist priest said, "This is a poisoning from large wheat. The woman in red represents the Heart Spirit (Shen); the young girl represents the Subordinate Spirit (Fu Shen). Radish counters the toxicity of wheat, hence it says 'burns my palace' (destroying the spirit's residence)." He was treated with medicine and Radish Seeds, and recovered. Since then, Radish Seeds have shown miraculous effects in treating wheat-food stagnation.