这就是在小柴胡汤的基础上加入桂枝、芍药，据《外台秘要》记载，也可用于治疗心腹部突然遭受邪气侵袭引起的疼痛。
这就是在小柴胡汤的基础上去掉人参、半夏、生姜、大枣，加入桂枝、干姜、栝蒌根、牡蛎，所治疗的病症是：伤寒病经过五六天，已经发过汗，但胸胁部胀满，小便不通利，口渴但不呕吐，只有头部出汗，伴有怕冷发热、心烦的症状。在《金匮要略》中，此方被称为柴胡桂姜汤，用于治疗疟疾，症状表现为寒多热少，或者仅有恶寒而没有发热。
这就是在小柴胡汤的基础上去掉甘草，加入铅丹、桂枝、龙骨、牡蛎、茯苓、大黄，用于治疗伤寒病经过八九天之后，误用泻下法，导致胸胁胀满、烦躁惊悸、小便不通利、说胡话（谵语）、身体沉重的病症。另一版本中含有黄芩。
这就是在小柴胡汤的基础上加入五味子，用于治疗温病，症状表现为发热且口渴，不怕冷，伴有咳嗽。
这就是在小柴胡汤的基础上加入牡丹皮，用于治疗妇女患伤寒，症状表现为身体发热、寒热往来、夜间躁动不安而白天相对安静，甚至出现像看见鬼怪一样的幻觉，且正值月经来潮或月经刚结束的情况。
这就是在小柴胡汤的基础上加入茯苓，用于治疗小便困难、潮热、腹部胀满。
这就是在小柴胡汤的基础上加入芒硝，用于治疗伤寒病十三天仍未解除，出现胸胁胀满且呕吐，下午傍晚时分出现潮热，随后出现轻微腹泻。这里提到“知以丸也”，意思是应当使用丸剂治疗。先用小柴胡汤解除表证，然后再用这个方剂治疗里证。
这就是在小柴胡汤的基础上加入白术、麦门冬，用于治疗痰热引起的头痛，以及手足忽冷忽热的症状。
这就是在小柴胡汤的基础上加入陈皮、芍药，这是近代的用法，还加入三匙生艾汁，用于治疗少阳经受邪引起的耳聋、胁痛、寒热往来、呕吐且口苦的症状。病位在半表半里之间，适宜采用和解的方法治疗。
这就是在小柴胡汤的基础上加入枳壳、桔梗，用于治疗痘疹消退后出现的咳嗽和胁痛。
这就是在小柴胡汤的基础上加入枳壳、川芎、白芍药，用于治疗伤寒引起的身体发热和两侧胁肋部疼痛。
这就是在小柴胡汤的基础上加入干姜、牡蛎，用于治疗痞证，症状表现为胸膈部胀满。
这就是在小柴胡汤的基础上去掉半夏、大枣，加大黄、当归、芍药，用于治疗各种积热引起的骨蒸潮热、寒热往来，以及伤寒发汗后病邪未解引起的肺咳，还有妇女月经不通等病症。
这就是在小柴胡汤的基础上去掉大枣，加入青黛，用姜汁和蒸饼制作成丸剂，用于治疗呕吐、脉象弦、头痛且有汗出的症状。
这就是在小柴胡汤的基础上加入芒硝、大黄，用于治疗妇女患伤寒，头痛、脉象浮，医生反而误用泻下法，导致邪气乘虚而入，出现口干舌燥、寒热往来、胡言乱语、像看见鬼怪一样的幻觉，脉象浮而数的症状。
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with the addition of Guizhi (Cinnamon Twig) and Shaoyao (Peony Root). According to *Waitai Miyao* (Secret Essentials of the Outer Palace), it can also be used to treat sudden pain in the heart and abdomen caused by invasion of pathogenic factors.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Ren Shen (Ginseng Radix), Ban Xia (Pinellia Rhizome), Sheng Jiang (Zingiberis Rhizoma Recens), and Da Zao (Jujubae Fructus) removed, and the addition of Guizhi (Cinnamon Twig), Gan Jiang (Zingiberis Rhizoma), Gualou Gen (Trichosanthis Radix), and Muli (Ostreae Concha). It treats Taiyang disease (Disease of the Taiyang Channel) after five or six days, following sweating therapy, characterized by fullness in the chest and hypochondrium, difficulty in urination, thirst without vomiting, sweating only on the head, aversion to cold alternating with fever, and irritability. In *Jin Gui Yao Lue* (Essential Prescriptions from the Golden Cabinet), this formula is named Chaihu Guijiang Tang (Bupleurum, Cinnamon Twig, and Dried Ginger Decoction) and is used to treat malaria with predominant chills and slight fever, or merely chills without fever.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Gan Cao (Licorice Root) removed, and the addition of Qiandan (Lead Tan), Guizhi (Cinnamon Twig), Longgu (Fossilized Bones), Muli (Ostreae Concha), Fuling (Poria), and Dahuang (Rhubarb Root). It treats Taiyang disease (Disease of the Taiyang Channel) after eight or nine days, where improper purgative therapy resulted in chest and hypochondriac fullness, irritability and palpitations, difficulty in urination, delirium, and heaviness of the body. Another version contains Huang Qin (Scutellaria Root).
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Wuweizi (Schisandra Fruit) added, treating Warm Disease (Warm Pathogen-induced illness) characterized by fever, thirst, absence of aversion to cold, and cough.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Mudan Pi (Moutan Cortex) added, treating women with Taiyang disease (Disease of the Taiyang Channel) presenting with fever, alternating chills and fever, restlessness at night with calmness during the day, hallucinations resembling seeing ghosts, occurring while menstruation has just started or ended.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Sheng Dihuang (Rehmanniae Radix Recens) added, treating the same symptoms as mentioned above.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Fuling (Poria) added, treating difficulty in urination, tidal fever, and abdominal fullness.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Mangxiao (Natrii Sulfas) added, treating Taiyang disease (Disease of the Taiyang Channel) unresolved after thirteen days, presenting with chest and hypochondriac fullness and vomiting, tidal fever in the late afternoon, followed by slight diarrhea. The text notes "know to use pills," indicating that pill form should be used. First, resolve the exterior syndrome with Xiao Chai Hu Tang (Minor Bupleurum Decoction), then treat the interior condition with this formula.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Baizhu (Atractylodis Macrocephalae Rhizoma) and Maidong (Ophiopogonis Radix) added, treating headache due to Phlegm-Heat and alternating cold and heat in the hands and feet.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Chenpi (Citrus Reticulatae Pericarpium) and Shaoyao (Peony Root) added. This is a modern method, adding three spoonfuls of raw Aiye juice (Artemisia argyi leaf juice). It treats Shaoyang disease (Disease of the Shaoyang Channel) characterized by deafness, hypochondriac pain, alternating chills and fever, vomiting, and bitter taste in the mouth. The pathology lies between the exterior and interior, suitable for harmonizing treatment.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Zhike (Aurantii Fructus Immaturus) and Jiegeng (Platycodon Root) added, treating cough and hypochondriac pain after the eruption of smallpox or chickenpox.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Zhike (Aurantii Fructus Immaturus), Chuanxiong (Ligusticum Chuanxiong Rhizome), and Baishao (White Peony Root) added, treating Taiyang disease (Disease of the Taiyang Channel) with fever and bilateral hypochondriac pain.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Gan Jiang (Zingiberis Rhizoma) and Muli (Ostreae Concha) added, treating Pi syndrome (Glomus/Fullness Syndrome) characterized by fullness and distension in the chest and diaphragm.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Ban Xia (Pinellia Rhizome) and Da Zao (Jujubae Fructus) removed, and Dahuang (Rhubarb Root), Danggui (Angelica Sinensis Radix), and Shaoyao (Peony Root) added. It treats various conditions involving accumulated Heat such as bone-steaming tidal fever, alternating chills and fever, lung cough remaining after sweating therapy for Taiyang disease (Disease of the Taiyang Channel), and amenorrhea in women.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Da Zao (Jujubae Fructus) removed, and Qingdai (Indigo Naturalis) added, processed with Jiangzhi (Ginger Juice) and steamed bing (steamed wheat cake) into pills. It treats vomiting, wiry pulse, headache, and sweating.
This is Xiao Chai Hu Tang (Minor Bupleurum Decoction) with Mangxiao (Natrii Sulfas) and Dahuang (Rhubarb Root) added, treating women with Taiyang disease (Disease of the Taiyang Channel) presenting with headache and floating pulse. If the physician incorrectly uses purgation, allowing pathogenic factors to enter due to deficiency, symptoms include dry mouth and tongue, alternating chills and fever, delirious speech resembling seeing ghosts, and a floating and rapid pulse.