白扁豆，味甘，气微温，无毒。入脾、胃二经。下气和中，除霍乱吐逆，解河豚酒毒，
善治
暑气。佐参、茯、二术，止泻实神。但味轻气薄，单用无功，必须同补气之药共用为佳矣。
或谓白扁豆非固胎之药，前人安胎药中往往用之，何故？盖胎之不安者，由于气之不安，白
扁豆尤能和中，故用之以和胎气耳。母和而安，即谓之能安胎也。亦可但单用此味，以安骤
动之胎，吾从未见其能安者矣。
或问白扁豆气味凉薄，亦可有可无之物，先生删药味甚多，何独不删白扁豆？夫扁豆乃
五谷
中最纯之味，淡而不厌，可以适用者，不止入汤剂也，或入于丸剂，或磨粉而调食，均能益
人。况功用不独安胎，尤善种子。凡妇人之不受孕者，半由于任、督之伤也，白扁豆善理任
、督，又入脾、胃二经，同人参、白术用之，引入任、督之路，使三经彼此调和，而子宫胞
胎自易容物。予所以特登此味，以为毓麟之资，岂漫然而收录乎哉。
乌芝麻，味甘，气温，无毒，入肾经，并通任、督之脉。功擅黑须，《图经》未载，故
近人
无知之者。凡黑须髭之药，缺乌芝麻则不成功。盖诸药只能补肾，而不能通任督之路也。唇
口之间，正在任督之路，乌芝麻通任督而又补肾，且其汁又黑，所以取神效也。但功力甚薄
，非久服多服，益之以补精之味，未易奏功也。
或问乌芝麻黑须髭，神农未书，《本草》不志，何吾子创言之哉？曰∶乌芝麻变白，予
亲试
而验者。乃不慎色故，余年四十早衰，须髯半白，服乌芝麻重黑，后因变乱，不慎酒色复白
。可见，服乌须药，必须断欲，不可归咎乌芝麻之无效验焉哉。
或疑乌芝麻即白芝麻同类，未闻白芝麻之润肾，乌芝麻之变白，恐亦好事者之言。不知
乌芝
麻之变白，实有义也。芝麻性润而汁乌，乌自入肾，既入肾，自能润髭矣，况又通任督之脉
乎。然而，乌芝麻之义，又不止此，乌芝麻更能上润于心，使心火不炎，不烧任督之路，引
补肾之药至于唇口，故能变白也。
白扁豆，味道甘甜，性质微温，没有毒性。归入脾、胃两条经络。能降气调和脾胃，消除霍乱引起的呕吐和逆气，解除河豚和酒类的毒素，善于治疗暑邪之气。配合人参、茯苓、苍术和白术使用，止泻效果显著且神奇。但是它的药味轻、药力薄，单独使用没有功效，必须与补气药物一起使用才好。
有人问白扁豆不是固护胎儿的药物，前人在安胎方剂中往往使用它，这是什么原因？大概是因为胎儿不安稳，是由于母体气机不安稳所致，白扁豆尤其能够调和脾胃之气，所以用它来调和胎气罢了。母亲身体调和而安稳，就称它能安胎。也可以只单用这一味药，来安抚突然躁动的胎儿，但我从未见过它能起到安胎作用的。
有人问白扁豆气味清凉淡薄，似乎是可以有也可以没有的药物，先生删减了很多药味，为什么唯独不删除白扁豆？因为扁豆是五谷中最纯正的味道，清淡而不令人厌烦，适用的场合不止是煎汤服用，还可以加入丸剂，或者磨成粉调食，都能对人有益。况且它的功用不只是安胎，尤其善于促进受孕。凡是妇女不能怀孕的，一半是由于任脉和督脉受损，白扁豆善于调理任脉和督脉，又归入脾、胃二经，与人参、白术同用，能将药力引入任脉和督脉的路径，使这三条经络彼此调和，子宫和胞胎自然容易容纳受精卵。我之所以特别收录这味药，作为孕育麟儿（子嗣）的资本，难道是随意收录的吗？
乌芝麻，味道甘甜，性质温和，没有毒性，归入肾经，并且通达任脉和督脉的脉络。功效擅长使胡须变黑，《本草图经》中没有记载，所以近代人无知晓它的。凡是能使胡须变黑的药物，缺少乌芝麻就不能成功。大概各种药物只能补肾，而不能通达任脉和督脉的路径。嘴唇和口部之间，正是任脉和督脉经过的地方，乌芝麻既能通达任督又能补肾，而且它的汁液是黑色的，所以能取得神奇的效果。但是它的药力很薄弱，如果不是长期服用、大量服用，并辅以补精的药物，不容易见效。
有人问乌芝麻能使胡须变黑，神农氏《本草经》未书写，《本草》著作也未记载，为什么您创立这种说法呢？回答说：乌芝麻会变白，是我亲自尝试并验证过的。这是因为不慎房事导致的，我四十岁时早衰，胡须和鬓角半白，服用乌芝麻后重新变黑，后来因为战乱，不慎饮酒色欲又变白了。由此可见，服用黑发药物，必须断绝性欲，不能归咎于乌芝麻没有疗效。
有人怀疑乌芝麻就是白芝麻同类，没听说过白芝麻能润肾，乌芝麻会变白，恐怕也是好事者之言。不知道乌芝麻变白，确实有道理。芝麻性质滋润且汁液为黑色，黑色自能入肾，既然入肾，自然能滋润胡须，何况又能通达任脉和督脉呢。然而，乌芝麻的道理，又不止于此，乌芝麻更能向上滋润心脏，使心火不炎上，不烧灼任脉和督脉的路径，引导补肾的药物到达嘴唇和口部，所以能使白发变黑。
Bai Biandou (White Hyacinth Bean), with a sweet taste and slightly warm nature, is non-toxic. It enters the Spleen and Stomach meridians. It descends Qi and harmonizes the middle Jiao, eliminates vomiting and regurgitation caused by Huoluan (cholera-like syndrome), resolves toxicity from pufferfish and alcohol, and is particularly effective in treating Summerheat pathogen. When combined with Renshen (Ginseng), Fuling (Poria), Baizhu (Atractylodes macrocephala), and Zhushu (Atractylodes lancea), it stops diarrhea with remarkable efficacy. However, its flavor is light and its qi is thin; used alone, it has no effect, so it must be used together with Qi-tonifying herbs for best results.
Some ask: Bai Biandou is not a herb for securing the fetus, yet predecessors often included it in fetal-securing formulas. Why? Generally, fetal instability arises from maternal Qi instability. Bai Biandou excels at harmonizing the Middle Jiao, thus it is used to harmonize fetal Qi. When the mother is harmonized and stable, it is said to secure the fetus. One might use this single herb to calm a suddenly agitated fetus, but I have never seen it succeed in doing so.
Someone asks: Bai Biandou has a cool and thin flavor, seemingly an optional herb. You deleted many herbs, why did you specifically spare Bai Biandou? Because Biandou possesses the purest flavor among the five grains, bland yet not tiresome, applicable not only in decoctions but also in pills or ground into powder for dietary use, all benefiting the body. Moreover, its functions are not limited to securing the fetus but especially promote conception. Women who fail to conceive often suffer injury to the Ren and Du vessels. Bai Biandou regulates the Ren and Du vessels and enters the Spleen and Stomach meridians. Combined with Renshen and Baizhu, it guides medicinal energy into the pathways of the Ren and Du vessels, harmonizing these three meridians, thereby making the uterus and womb receptive to conception. I included this herb specifically as a resource for nurturing offspring, not arbitrarily.
Wu Zhima (Black Sesame Seed), with a sweet taste and warm nature, is non-toxic. It enters the Kidney meridian and connects with the Ren and Du vessels. Its function excels at darkening hair. It was not recorded in *Tujing*, so modern people are ignorant of it. Any herb intended to darken beard and whiskers fails without Wu Zhima. Generally, other herbs can only tonify the Kidney but cannot open the pathways of the Ren and Du vessels. The area between the lips and mouth lies exactly on the pathway of the Ren and Du vessels. Wu Zhima opens these vessels while tonifying the Kidney, and its juice is black, hence achieving miraculous effects. However, its potency is weak; unless taken long-term and in large doses, supplemented with essence-tonifying herbs, it is difficult to achieve results.
Someone asks: Wu Zhima darkens hair, yet Shennong did not write of it, and *Bencao* does not record it. Why do you create such claims? I reply: I personally tested that Wu Zhima turns white. This occurred due to imprudence in sexual activity. At age forty, I experienced premature aging, with half my beard turning white. After taking Wu Zhima, it turned black again. Later, due to turmoil, I indulged in wine and sex, and it turned white again. Thus, when taking hair-darkening herbs, one must abstain from sexual desire; one should not blame Wu Zhima for lacking efficacy.
Some suspect Wu Zhima is the same category as Bai Zhima (White Sesame Seed) and have not heard that White Sesame nourishes the Kidney or that Black Sesame turns white, fearing this is merely talk by enthusiasts. They do not understand the rationale behind Wu Zhima turning white. Sesame is moistening, and its juice is black. Black enters the Kidney; once in the Kidney, it naturally moistens the beard. Furthermore, it connects the Ren and Du vessels. However, the significance of Wu Zhima extends beyond this: it moistens the Heart from above, preventing Heart Fire from flaring up and burning the pathways of the Ren and Du vessels, thereby guiding Kidney-tonifying herbs to the lips and mouth, which allows white hair to turn black.