因母气不能自运，故难产，当补其母之气，则儿健易产矣，遂于大全方紫苏饮加参术补
气药，随母形色禀性，参时加减，名曰达生散。人参、白术，白芍、当归、腹皮、紫
苏、陈皮、甘草，加枳壳，砂仁，胜于瘦胎散多矣。
胎前用药，清热养血为主，而清热养血之后，惟以补脾为要，
此培后天元气之本也。若养葵则不用芩、术，而以地黄饮加杜、续
以补肾，夫胎系于肾，肾固则胎自安，此补脾不如补肾之要妙也。各具至理，察候用之。然劳神动怒，情欲
之火俱能堕胎，盖原其故，皆因于热。夫火能消物，造化自然，如惯堕之妇，或食少而中气不调，且
不必养血，先理脾胃，次服补中益气汤，脾胃旺饮食强，方能气血有自而生也。
女之肾脏系于胎，是母之真气，而子所赖以生长者也。受妊之后，宜令镇静，则血气安和，内远
七情，外薄五味，大冷大热之物皆在所禁，雾露风邪不得乘间而入，亦不得交合阴阳，触动
欲火，谨节饮食。心气大惊而癫疾，肾气不足而解颅，脾气不和而羸瘦，心气虚乏而神不足，儿从母气，
不可不慎，苟无胎动、胎痛，泻痢、风寒外邪，不可轻易服药。
因为母体的气机不能自行运转，所以导致难产，应当补益母体的气，这样胎儿健壮就容易分娩了。于是基于《大全方》中的紫苏饮，加入人参、白术等补气药物，并根据孕妇的形体特征和禀赋性格，参考时节进行加减化裁，命名为达生散。方中用人参、白术、白芍、当归、大腹皮、紫苏、陈皮、甘草，再加枳壳、砂仁，其效果远胜于瘦胎散。
妊娠期间用药，以清热养血为主，而在清热养血之后，唯有补脾最为关键，这是培补后天元气根本的方法。如果是养葵（注：此处疑为特定语境或人名/病名误植，依原文直译），则不用黄芩、白术，而是用地黄饮子加杜仲、续断来补肾。因为胎元系于肾，肾气坚固则胎元自然安稳，这是补脾不如补肾的精妙之处。两者都蕴含至理，需观察证候后使用。然而，劳神过度、动怒以及情欲之火都能导致堕胎，探究其原因，都是因为热邪。火能消蚀万物，这是造化的自然规律。对于习惯性堕胎的妇女，如果饮食少且中焦之气不调，暂不必急于养血，应先调理脾胃，其次服用补中益气汤，待脾胃旺盛、饮食增强，气血才能自然生化。
女性的肾脏与胎元相连，这是母体的真气，也是胎儿赖以生长的基础。受孕之后，宜保持心境镇静，使血气安和，内在远离七情刺激，外在节制五味摄入，大冷大热的食物都在禁忌之列，雾露风邪不得趁机侵入，也不应行房事交合阴阳，触动欲火，谨慎节制饮食。若心气受大惊刺激则易患癫疾，肾气不足则致解颅（囟门迟闭），脾气不和则身体羸瘦，心气虚乏则精神不足。胎儿依附于母体之气，不可不谨慎。如果没有胎动、胎痛，以及泻痢、风寒外邪等症状，不要轻易服药。
Because the mother's Qi cannot move spontaneously, difficult labor occurs. One should tonify the mother's Qi, so that the fetus becomes robust and delivery is facilitated. Thus, based on the Zi Su Yin (Perilla Decoction) from *Da Quan Fang* (Great Complete Formulas), Qi-tonifying herbs such as Ren Shen (Ginseng Root) and Bai Zhu (Atractylodes Rhizome) were added. The formula was modified according to the mother's physical constitution, innate character, and seasonal factors, and named Da Sheng San (Birth-Attaining Powder). It contains Ren Shen (Ginseng Root), Bai Zhu (Atractylodes Rhizome), Bai Shao (White Peony Root), Dang Gui (Angelica Sinensis Root), Fu Pi (Citron Peel), Zi Su (Perilla Leaf), Chen Pi (Tangerine Peel), Gan Cao (Licorice Root), plus Zhi Ke (Bitter Orange Fruit) and Sha Ren (Amomum Fruit). Its efficacy far surpasses that of Shou Tai San (Fetus-Thinning Powder).
During pregnancy, medication primarily focuses on clearing heat and nourishing blood. After clearing heat and nourishing blood, the most crucial step is to tonify the Spleen, which serves as the foundation for cultivating post-heaven Yuan Qi (Original Energy). If treating Yang Kui (a specific condition or context), Huang Qin (Scutellaria Root) and Bai Zhu (Atractylodes Rhizome) are not used; instead, Di Huang Yin (Rehmannia Decoction) is used with adding Du Zhong (Eucommia Bark) and Xu Duan (Dipsacus Root) to tonify the Kidney. Since the fetus is anchored in the Kidney, securing the Kidney ensures the stability of the fetus; this highlights the subtlety that tonifying the Kidney may be superior to tonifying the Spleen in certain contexts. Both approaches contain profound principles and should be applied after observing the clinical presentation. However, mental exhaustion, anger, and the fire of emotional desires can all cause miscarriage. Investigating the cause, it is due to Heat. Fire consumes matter, which is a natural law of creation. For women with habitual miscarriages, if they have poor appetite and disharmony of Middle Jiao Qi, one should not immediately nourish blood but first regulate the Spleen and Stomach, then administer Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction). Only when the Spleen and Stomach are vigorous and dietary intake strong can Qi and Blood generate naturally.
The female Kidney system is connected to the fetus; it is the mother's true Qi, upon which the child relies for growth. After conception, one should maintain tranquility so that Qi and Blood remain harmonious. Internally, one must stay away from the Seven Emotions (Joy, Anger, Worry, Pensiveness, Sadness, Fear, Fright); externally, one must moderate the Five Flavors. Foods that are extremely cold or hot are prohibited. Mist, dew, wind, and pathogenic evils must not take advantage of openings to enter. Sexual intercourse should be avoided to prevent stirring up desire-fire. Diet must be carefully regulated. If the Heart Qi suffers great fright, epilepsy may result; if Kidney Qi is insufficient, Jie Lu (delayed closure of fontanelles) may occur; if Spleen Qi is disharmonious, emaciation results; if Heart Qi is deficient, spiritual insufficiency manifests. The fetus relies on the mother's Qi, so caution is imperative. Unless there are symptoms such as fetal movement pain, fetal pain, diarrhea/dysentery, or external Wind-Cold pathogens, medication should not be administered lightly.