丹溪曰∶世之难产者，往往见于郁闷安佚之人，富贵豢养之家。若贫贱辛苦者，无有也。古
方书只有瘦胎饮一论，而其方为湖阳公主作也，实非极至之言。何者?见其有用此方者，其
难自若。予表妹苦于难产，后遇胎孕，则触而去之，予甚悯焉。视其作为，惟勤于针指，构
思旬日，忽自悟曰，此正与湖阳公主相反。彼奉养之人，其气必实，耗其气使平和，故易产
。今形肥，知其气虚，久坐则气不运，必气愈弱，儿在胞胎，因母气不能自运耳，当补其母
之气，则儿健易产矣。令其有孕至五六个月来告，即与全方紫苏饮，加补气药，与数十帖，
果得男而甚快。遂以此方，随母形色性禀，参时令加减与之，无不应者，因名其方达生散。
白术散 治子肿。
白术（一钱） 姜皮 陈皮 茯苓皮 大腹皮 桑皮（各五分）
为末，米饮调服。
竹叶汤 治子烦
淡竹叶 麦冬肉 黄芩 人参 茯苓 防风 知母
水煎服。
参术饮 治转胞。
当归 熟地 川芎 白芍 人参 白术 陈皮 半夏 甘草
姜三片，水煎。
参术膏 转胞屡验。
人参（二钱半） 白术（二钱） 黄 （钱半） 茯苓（一钱） 陈皮（一钱） 桃仁（一钱） 炙草（
五分）
用羊猪胞煎汤代水。
丹溪说：世间的难产者，往往出现在心情郁闷、生活安逸的人身上，即那些被富贵家庭娇生惯养的人。如果是贫贱且辛苦劳作的人，则没有这种情况。古代医书中只有“瘦胎饮”这一论述，而这个方剂是为湖阳公主制定的，实际上并非最完善的言论。为什么呢？因为见到有人使用这个方子，他们的难产情况依然如故。我的表妹深受难产之苦，后来再次怀孕时，就设法终止妊娠，我非常怜悯她。观察她的行为举止，发现她只勤于女红针线活，经过十多天的构思，我突然领悟到：这正与湖阳公主的情况相反。那些奉养优厚的人，其气血必然充实，通过消耗其气使其平和，所以容易生产。现在这位女子形体肥胖，可知其气虚，久坐不动则气机不运行，必定使气更加虚弱，胎儿在胞胎中，因为母亲的气不能自行推动所致，应当补益母亲的气，那么胎儿健壮就容易生产了。让她在怀孕到五六个月时来告知，我就给予完整的紫苏饮方，加入补气药，服用几十帖，果然顺利生下男孩且过程很快。于是以此方为基础，根据产妇的形体、肤色、性格禀赋，参考时令进行加减后给予服用，没有不应验的，因此将此方命名为达生散。
白术散：治疗子肿（妊娠肿胀）。
白术（一钱） 姜皮 陈皮 茯苓皮 大腹皮 桑皮（各五分）
研为细末，用米汤调服。
竹叶汤：治疗子烦（妊娠心烦）。
淡竹叶 麦冬肉 黄芩 人参 茯苓 防风 知母
水煎服。
参术饮：治疗转胞（妊娠小便不通）。
当归 熟地 川芎 白芍 人参 白术 陈皮 半夏 甘草
生姜三片，水煎。
参术膏：治疗转胞屡见疗效。
人参（二钱半） 白术（二钱） 黄芪（钱半） 茯苓（一钱） 陈皮（一钱） 桃仁（一钱） 炙甘草（五分）
用羊或猪的膀胱煎汤代替水煎药。
Danxi stated: Difficult labor in the world often occurs in people who are depressed and live in leisure, specifically those raised in wealthy families. This is not seen among the poor and hardworking. Ancient medical texts only contain a discussion on "Shoutai Yin" (Fetus-Thinning Decoction), which was formulated for Princess Huyang; however, it is not the most comprehensive theory. Why? Because I have observed that even when this formula is used, difficult labor persists. My cousin suffered greatly from difficult labor; upon becoming pregnant again, she sought to terminate the pregnancy, which deeply pitied me. Observing her lifestyle, she was diligent in needlework. After pondering for ten days, I suddenly realized: this situation is exactly opposite to that of Princess Huyang. Those with luxurious lifestyles must have abundant Qi (vital energy); by耗 (consuming/reducing) their Qi to bring it to balance, birth becomes easy. Now, this woman is obese, indicating Qi deficiency. Prolonged sitting causes Qi stagnation, further weakening the Qi. The fetus in the womb relies on the mother's Qi to move; therefore, we should tonify the mother's Qi, making the fetus robust and facilitating easier delivery. Instructed her to report back at five or six months of pregnancy, I prescribed the complete Zisu Yin (Perilla Decoction) with added Qi-tonifying herbs. After taking dozens of doses, she successfully delivered a healthy boy with great ease. Thus, based on this formula, I adjusted it according to the mother's physique, complexion, temperament, and seasonal changes, resulting in universal efficacy. Hence, I named this formula Dasheng San (Life-Reaching Powder).
Baizhu San (Atractylodes Macrocephala Powder): Treats Zigzhong (pregnancy edema).
Baizhu (1 qian) Jiangpi (Ginger Peel), Chenpi (Tangerine Peel), Fulingpi (Poria Peel), Dafupi (Areca Peel), Sangpi (Mulberry Root Bark) (each 0.5 qian).
Grind into powder, take with rice water.
Zhuye Tang (Bamboo Leaf Decoction): Treats Zigfan (pregnancy restlessness/irritability).
Danzhuye (Light Bamboo Leaf), Maidongrou (Ophiopogon Flesh), Huangqin (Scutellaria Root), Renshen (Ginseng), Fuling (Poria), Fangfeng (Saposhnikovia Root), Zhimu (Anemarrhena Rhizome).
Decoct in water and take.
Shenzhu Yin (Ginseng and Atractylodes Drink): Treats Zhuantong (pregnancy urinary retention/cystocele).
Danggui (Angelica Sinensis), Shudi (Prepared Rehmannia Root), Chuanxiong (Ligusticum Chuanxiong), Baishao (White Peony Root), Renshen (Ginseng), Baizhu (Atractylodes Macrocephala), Chenpi (Tangerine Peel), Banxia (Pinellia Tuber), Gancao (Licorice Root).
Add three slices of fresh ginger, decoct in water.
Shenzhu Gao (Ginseng and Atractylodes Paste): Highly effective for Zhuantong (pregnancy urinary retention).
Renshen (2.5 qian), Baizhu (2 qian), Huangqi (1.5 qian), Fuling (1 qian), Chenpi (1 qian), Taoren (1 qian), Zhigancao (0.5 qian).
Decoct using broth made from sheep or pig bladders as the water substitute.