凡妊娠已满十月，形体成就，神识咸备，分气趣产，宜服滑胎汤药。
瘦胎易产。胡阳公主每产累日不下，南山道士进此方。
商州枳壳（二两） 粉草（一两）
上为细末，百沸汤点二钱服。空心，日三服。
凡怀孕六、七个月以上，服之令儿易生。初生胎小微黑，百日以后肉渐变白。此虽孙真
人滑胎易产方，然抑阳降气，为众方之冠。此方分两出《必用方》，以此为正。
一方枳壳六两，甘草一两。（故加枳壳，减甘草，盖未产人甘草性寒故也。未产前一月
，日三服。忌登高厕）
一方有糯米半升，淘洗控干，同炒为末，米饮、白汤调下一、二钱。温隐居加当归、木
香各等分。
治妊娠胎肥壅隘，动止艰辛，临月服之，缩胎易产。兼治肠中诸疾，下气宽膈。
枳壳（五两） 甘草（一两半） 香附子（三两，炒去毛）
为末。姜煎汤点亦可。如丈夫、妇人冷气攻刺胁肋疼痛者，用葱白三寸同煎服。妇人脾
寒，血气成块作痛，热酒调服。大小便不通，白牵牛为末，煎汤调服。
治妊妇冲任脉虚，补血安胎。
熟地黄（二两） 当归（一两，微炒）
上为细末，炼蜜丸如梧子大，温酒下三、四十丸。
许学士云∶大率妇人妊娠，唯在抑阳助阴。盖抑阳助阴之药甚多，然胎前药唯恶群队，
若阴阳交错，别生他病。唯是南山道士枳壳散所以抑阳，四物汤所以助阴故尔。然枳壳散差
寒，若单服之恐有胎寒、腹痛之疾，以内补丸佐之，则阳不至强，阴不致弱。阴阳调停，有
益胎嗣，此前人未尝论及也。
凡妊娠已满十月，胎儿形体发育完备，神识也已具备，此时应当分气趋向分娩，适宜服用滑胎汤药。
瘦胎易产方。胡阳公主每次生产都历经多日无法娩出，南山道士进献此方。
商州枳壳（二两） 粉草（一两）
将上述药材研为细末，用滚开水冲服二钱。空腹时服用，每日三次。
凡是怀孕六、七个月以上者，服用此方可使胎儿易于出生。初生婴儿体型微小且肤色微黑，百日之后肌肉逐渐变白。这虽然是孙真人（孙思邈）的滑胎易产方，但其功效在于抑制阳气、降下气机，在众多方剂中居于首位。此方的剂量出自《必用方》，以此为正确标准。
另一版本：枳壳六两，甘草一两。（因此增加枳壳用量，减少甘草用量，因为未分娩之人服用性寒的甘草故也。在未产前一个月，每日服用三次。忌登高厕）
另一版本：加入糯米半升，淘洗后控干，与药材同炒后研为细末，用米饮或白开水调服一、二钱。温隐居在此方基础上加入当归、木香各等分。
治疗妊娠期间胎儿肥大导致胞宫狭窄，胎动及分娩艰难，临月时服用此方，可缩小胎儿体积，易于分娩。兼治肠道各种疾病，具有下气宽胸膈的功效。
枳壳（五两） 甘草（一两半） 香附子（三两，炒去毛）
研为细末。用生姜煎汤冲服亦可。如果是丈夫或妇人因冷气攻刺胁肋疼痛者，用三寸葱白同煎服用。妇人脾寒，血气结成块状作痛者，用热酒调服。大小便不通者，用白牵牛研为细末，煎汤调服。
治疗妊妇冲任脉虚弱，补血安胎。
熟地黄（二两） 当归（一两，微炒）
将上述药材研为细末，用炼蜜制成如梧桐子大小的丸剂，温酒送服三、四十丸。
许学士说：大抵妇女妊娠，关键在于抑制阳气、辅助阴气。虽然抑制阳气、辅助阴气的药物很多，但胎前用药唯独忌讳杂乱无章，如果阴阳交错，会引发其他疾病。唯有南山道士的枳壳散用来抑制阳气，四物汤用来辅助阴气。然而枳壳散偏寒，如果单独服用恐怕会导致胎寒、腹痛的疾病，配合内补丸一起使用，则阳气不至于过强，阴气不至于过弱。阴阳调和，有利于胎儿嗣续，这是前人未曾论述过的。
When pregnancy has reached full ten months, the fetal body is fully formed and consciousness is complete. At this stage, Qi should shift towards labor, and it is appropriate to take Slippery Birth Decoctions (Huatai Tang).
Slimming Fetus for Easy Delivery Formula. Princess Huyang experienced prolonged labor lasting several days without delivery each time. A Daoist from Mount Nan presented this formula.
Zhiqiao (Bitter Orange Fruit) from Shangzhou (2 liang), Fencao (Licorice Root) (1 liang).
Grind the above into a fine powder. Take 2 qian with boiling water. Take on an empty stomach, three times daily.
For those pregnant beyond six or seven months, taking this will facilitate easy delivery. The newborn is small and slightly dark-skinned, but flesh gradually turns white after one hundred days. Although this is Sun Simiao’s (Sun Zhenren) Slippery Birth and Easy Delivery Formula, its mechanism lies in suppressing Yang and descending Qi, ranking it as the premier among many formulas. The dosages of this formula come from *Bi Yong Fang* (The Essential Formula), which is considered correct.
Another version: Zhiqiao (Bitter Orange Fruit) 6 liang, Gancao (Licorice Root) 1 liang. (Thus, Zhiqiao is increased and Gancao is decreased, because Gancao is cold in nature and unsuitable for those not yet delivered. Take three times daily one month before delivery. Avoid climbing high toilets.)
Another version: Add Banmi (Glutinous Rice) half sheng, wash and drain, stir-fry together with herbs, then grind into powder. Mix with rice drink or plain warm water and take 1-2 qian. Wen Ju Yin added Danggui (Angelica Sinensis) and Muxiang (Aucklandia Root) in equal parts.
Treats excessive fetal size causing uterine constriction during pregnancy, making movement and delivery difficult. Taking this near term shrinks the fetus and facilitates delivery. It also treats various intestinal diseases, descends Qi, and expands the chest/diaphragm.
Zhiqiao (Bitter Orange Fruit) (5 liang), Gancao (Licorice Root) (1.5 liang), Xiangfu (Cyperus Rhizome) (3 liang, stir-fried to remove hairs).
Grind into powder. Can also be taken with ginger decoction. If men or women suffer from cold Qi attacking and stabbing the hypochondrium causing pain, decoct with 3 cun of Congbai (Scallion White) and take. For women with Spleen Cold where Blood and Qi form masses causing pain, take mixed with hot wine. For obstruction of urination and defecation, take Baiqianniu (White Morning Glory Seed) powder mixed with decoction.
Xiangfu (Cyperus Rhizome), Zhiqiao (Bitter Orange Fruit) (2 liang each), Gancao (Licorice Root) (0.5 liang).
Treats deficiency of the Chong and Ren meridians in pregnant women, tonifying Blood and calming the fetus.
Shudihuang (Prepared Rehmannia Root) (2 liang), Danggui (Angelica Sinensis) (1 liang, lightly stir-fried).
Grind the above into a fine powder. Make pills using refined honey, sized like wu zi (wisteria seeds). Take 30-40 pills with warm wine.
Academic Xu stated: Generally, for pregnant women, the key lies in suppressing Yang and assisting Yin. Although there are many medicines that suppress Yang and assist Yin, herbal prescriptions for the prenatal period must avoid chaotic combinations. If Yin and Yang are intermixed, other diseases may arise. Only the Zhiqiao San (Bitter Orange Powder) from the Daoist of Mount Nan suppresses Yang, while Siwu Tang (Four Substances Decoction) assists Yin. However, Zhiqiao San is somewhat cold; taking it alone might cause fetal coldness and abdominal pain. By combining it with Neibu Wan (Internal Tonification Pill), Yang will not become too strong, and Yin will not become too weak. Harmonizing Yin and Yang benefits fetal continuity, a point previously unmentioned by predecessors.