恶阻者，谓有胎气，恶心阻其饮食也。妊娠禀受怯弱，中脘宿有痰饮，便有阻病，其症颜色如故，
脉息平和，但觉多卧少起，肢体沉重，头目昏眩，恶闻食气，喜啖酸咸，或嗜一物，或大吐，或时吐
痰与清水，甚者或作寒热，心中愦闷，呕吐痰水，胸膈烦满，恍惚不能支持，此皆胃气弱而兼痰与气
滞者也。亦有素本不虚，而一受胎孕，则冲任上壅，气不下行，故呕逆者。又有由经血既闭，水渍于
脏，脏气不宣通，故心烦愦闷，气逆而呕吐，及三月余而呕吐渐止。盖三月相火化胎之候，未能上食
于母，血气未用，五味不化，中气壅实，其为郁滞痰火秽恶之气，尽冲于胃，所以有恶阻等症。以上
诸症，轻者不须服药，乃常病也；重者须少药调之，宜用加味参橘饮。恶阻兼腰痛者，防胎坠下，犹
宜二陈、四物，加条芩。白术和中理脾为主，不可升举，盖呕逆，气已上升，再用升药，则犯有升无
降，上更实而下更虚，益促其坠矣。再若左脉弱而呕，服诸药不止者，当服理血归原药则愈，《经》
云“无阴则呕”是也。
加味参橘饮 治孕成二、三月后恶阻，呕逆恶食，或头眩晕，倦怠者。
人参（一钱） 归身（酒洗） 白术（各二钱土炒） 半夏（八分制） 橘红 藿香 炙草（各
四分） 砂仁（三分碎） 竹茹
归原散 治妊娠恶阻，呕吐不止，头痛，全不入食，服诸药不愈者。
人参 川芎 归身 白芍 丁香 炙草（各五分） 茯苓 白术（土炒） 陈皮（各一两五钱）
半夏（一两制） 桔梗（炒） 枳壳（麸炒各二钱半）
共为细末，引用姜五片，枣一枚，每服三钱。方内丁香不若易以砂仁或豆蔻为稳，如果胃寒
之甚，用者亦详慎之。
恶阻，是指怀孕后，胎气影响导致恶心、阻碍饮食的现象。孕妇如果体质虚弱，中脘部位原本就有痰饮停滞，就会出现这种阻滞病症。其症状表现为面色如常，脉象平和，只是觉得嗜睡少动，肢体沉重，头晕目眩，厌恶食物气味，喜欢吃酸咸口味，或者特别嗜好某一种食物；有的剧烈呕吐，有的时常吐出痰液和清水；严重的甚至出现寒热交替，心中烦乱闷塞，呕吐痰水，胸膈部烦热胀满，精神恍惚难以支撑。这些都是由于胃气虚弱兼有痰湿和气机阻滞所致。也有的人原本身体不虚，一旦受孕，冲任二脉之气上壅，气机不能下行，所以发生呕逆。还有的是因为月经停止后，水湿浸渍脏腑，脏气不能宣通，所以心烦意乱、气逆呕吐，到了三个月左右呕吐逐渐停止。这是因为三个月时是相火化生胎儿的时期，胎儿尚未从母体摄取营养，血气未被大量消耗，五味之精未能完全转化，中气壅滞充实，那些郁滞的痰火秽浊之气全部冲犯胃部，所以出现恶阻等症状。以上各种症状，轻的不需要服药，属于正常现象；重的需要用少量药物调理，适宜使用加味参橘饮。恶阻伴有腰痛的情况，要防止胎元下坠，适宜用二陈汤、四物汤，加入黄芩。白术以和中健脾为主，不可使用升提药，因为呕逆时气机已经上升，再用升提药物，就会造成只有升没有降的局面，使上部更实而下部更虚，反而加速胎元下坠。如果左脉弱且呕吐，服用其他药物无效时，应当服用理血归原药才能痊愈，《内经》说“无阴则呕”就是这个道理。
加味参橘饮：治疗怀孕二、三个月后出现恶阻，呕吐逆气、厌恶饮食，或者头晕目眩、疲倦乏力者。
人参（一钱） 当归身（酒洗） 白术（各二钱，土炒） 半夏（八分，制过） 橘红 藿香 炙甘草（各四分） 砂仁（三分，捣碎） 竹茹
归原散：治疗妊娠恶阻，呕吐不止，头痛，完全无法进食，服用其他药物无效者。
人参 川芎 当归身 白芍 丁香 炙甘草（各五分） 茯苓 白术（土炒） 陈皮（各一两五钱） 半夏（一两，制过） 桔梗（炒） 枳壳（麸炒，各二钱半）
以上药材共研为细末，煎服时引用生姜五片、大枣一枚，每次服用三钱。方中的丁香不如改用砂仁或豆蔻更为稳妥，如果是胃寒非常严重的情况，使用者也要详细审慎。
Ezu (Morning Sickness) refers to the condition where, upon conception, fetal Qi causes nausea and obstructs the intake of food. If a pregnant woman has a weak constitution and phlegm-fluid retention in the Zhongwan region, this obstruction disease occurs. The symptoms include a normal complexion, a peaceful pulse, but with a tendency to sleep more and rise less, heavy limbs, dizziness and vertigo, aversion to food odors, a preference for sour and salty tastes, or cravings for specific foods; some experience severe vomiting, while others frequently spit out phlegm and clear fluid. In severe cases, there may be alternating chills and fever, mental restlessness and oppression, vomiting of phlegm and water, heat and fullness in the chest and diaphragm, and mental confusion with inability to sustain oneself. These are all due to weak Stomach Qi combined with phlegm and Qi stagnation. There are also cases where the person was not originally deficient, but upon conception, the Chong and Ren vessels become congested upwards, preventing Qi from descending, thus causing vomiting and reflux. Another cause is that after menstruation ceases, water dampness infiltrates the Zang organs, preventing their Qi from circulating freely, leading to mental irritability, Qi rebellion, and vomiting, which gradually subsides after three months. This is because at three months, when the Ministerial Fire transforms into the fetus, the fetus has not yet drawn nourishment from the mother, blood and Qi are not yet heavily utilized, and the transformation of the five flavors is incomplete. The Middle Qi becomes congested and solid, and the stagnant phlegm-fire and turbid evil Qi rush against the Stomach, resulting in symptoms like Ezu. For mild cases among the above, medication is unnecessary as it is a common physiological phenomenon; for severe cases, mild medication is required to regulate the condition, and Jiawei Shanju Yin (Modified Ginseng and Tangerina Peel Decoction) is suitable. If Ezu is accompanied by lower back pain, one must guard against miscarriage; Erchen Tang (Two-Cured Decoction) and Siwu Tang (Four-Agent Decoction) with Huangqin (Scutellaria Root) are appropriate. Baizhu (Atractylodis Macrocephalae Rhizoma) primarily harmonizes the middle and regulates the Spleen; lifting herbs should not be used. Since vomiting indicates upward rebellious Qi, using lifting herbs would create a situation of "only ascending, no descending," making the upper part more excess and the lower part more deficient, thereby accelerating miscarriage. If the left pulse is weak and vomiting persists despite other medications, Lixue Guiyuan Yao (Blood-Regulating and Origin-Returning Medicine) should be taken to achieve recovery, as stated in the Classic: "Without Yin, there is vomiting."
Jiawei Shanju Yin (Modified Ginseng and Tangerina Peel Decoction): Treats Ezu occurring two to three months after conception, characterized by vomiting, reflux, anorexia, dizziness, vertigo, and fatigue.
Renshen (Ginseng Radix et Rhizoma) (1 qian), Danggui Shen (Angelicae Sinensis Radix - body), Baizhu (Atractylodis Macrocephalae Rhizoma) (2 qian each, stir-fried with earth), Banxia (Pinelliae Rhizoma) (8 fen, processed), Juhong (Citri Reticulatae Pericarpium Rubrum), Huoxiang (Agastaches Herba), Zhigancao (Glycyrrhizae Radix et Rhizoma Preparatum) (4 fen each), Sharen (Amomi Fructus) (3 fen, crushed), Zhuru (Bambusae Caulis in Taeniam).
Guiyuan San (Origin-Returning Powder): Treats pregnancy Ezu with persistent vomiting, headache, complete inability to eat, and failure of other medications.
Renshen (Ginseng Radix et Rhizoma), Chuanxiong (Ligustici Chuanxiong Rhizoma), Danggui Shen (Angelicae Sinensis Radix - body), Baishao (Paeoniae Radix Alba), Dingxiang (Caryophylli Flos), Zhigancao (Glycyrrhizae Radix et Rhizoma Preparatum) (5 fen each), Fuling (Poria), Baizhu (Atractylodis Macrocephalae Rhizoma, stir-fried with earth), Chenpi (Citri Reticulatae Pericarpium) (1 liang 5 qian each), Banxia (Pinelliae Rhizoma, 1 liang, processed), Jiegeng (Platycodonis Radix, stir-fried), Zhike (Aurantii Fructus Immaturus, bran-stir-fried) (2.5 qian each).
Grind all ingredients into fine powder. For administration, use 5 slices of fresh ginger and 1 jujube as the decoction base. Take 3 qian per dose. It is more stable to replace Dingxiang (Caryophylli Flos) with Sharen (Amomi Fructus) or Doukou (Amomi Fructus Rotundus) in this formula. If the stomach cold is extremely severe, users should exercise caution.