【气味】
甘辛大热有小毒。阳中之阳浮也。去其外之粗皮。是为肉桂。入足少阴太阴经血分
。
【主治】
补下焦不足。治沉寒痼冷之病。渗泄止渴。去荣卫中风寒。表虚自汗。春夏为禁药
。
秋冬下部腹痛非此不能止。补命门不足。益火消阴。治寒痹风喑。阴盛失血。泻痢惊痫。故
凡小儿惊风及泄泻。并用五苓散以泄丙火。渗土湿。内用肉桂者。抑肝风而扶脾土也。医录
云。有人患赤眼肿痛。脾虚不能饮食。肝脉盛。用凉药治肝则脾愈虚。用暖药治脾则肝愈盛
。但于温平药中倍加肉桂。杀肝而益脾也。
【气味】
辛温无毒。浮而升阳也。少阳本经引经之药。又入手足厥阴气分。
【主治】
中风入脑头痛。面上游风。治一切面。一切气。一切血。破宿血。养新血。长肉
诸疮疡及排脓。凡郁在中焦。须开提以升其气。解诸郁而通阴阳者。非川芎不为功。凡血痢
已通而痛不止者。乃阴亏气郁也。若助清阳之气而能令气行血调者。非川芎而谁济。但单服
过久。则辛喜归肺。肺气偏胜。恐金来贼木。故有暴亡之患。若配合得宜。定无此害。
【气味】
苦微寒无毒。
【主治】
伤寒。补不足。金疮痈疡折跌。续筋。妇人崩漏。子宫冷。腰痛。关节缓急。入平
胃散治痢尤效。
【气味】
味甘、辛，性大热，有小毒。属于阳中之阳，性质轻浮上升。去掉其外层的粗糙树皮，即为肉桂。它归入足少阴肾经和足太阴脾经的血分。
【主治】
补益下焦的不足，治疗沉寒痼冷（深伏体内的寒冷重症）的病证。具有渗湿泄浊、止渴的作用。祛除营卫受风寒之邪，治疗表虚自汗。春夏季节将其列为禁忌药物。
秋冬季节下部腹痛，非用此药不能止痛。补益命门之火不足，通过益火来消除阴寒。治疗寒痹和风喑（因风邪导致的失音）。治疗阴盛导致的失血，以及腹泻痢疾、惊痫等症。因此，凡是小儿惊风和泄泻，通常配合五苓散以清泄丙火（小肠之火），渗利脾土之湿气，方中内用肉桂，是为了抑制肝风而扶持脾土。医书记载：有人患赤眼肿痛，脾虚导致不能饮食，肝脉旺盛。如果用凉药治肝，则脾更虚；如果用暖药治脾，则肝火更盛。只有在温平的药物中加倍加入肉桂，才能既杀伐肝木之亢盛，又有益于脾土。
【气味】
味辛，性温，无毒。性质轻浮且升发阳气。是少阳胆经的本经引经药，又入手厥阴心包经和足厥阴肝经的气分。
【主治】
治疗中风入脑引起的头痛，面部的游风（游走不定的风邪）。治疗一切面部疾病，调理一切气病，调理一切血病。破除陈旧瘀血，滋养新血，促进肌肉生长，治疗各种疮疡及排脓。凡是郁结在中焦（脾胃），必须通过开提作用来升举气机，解除各种郁滞并通达阴阳的，非川芎不能建功。凡是血痢已经通畅但疼痛不止的，这是阴亏气郁所致。如果能助长清阳之气，使气行则血调的，除了川芎还有谁能救济？但是单服时间过久，因为辛味喜好归于肺经，会导致肺气偏胜，恐怕金克木（肺金克制肝木），所以有突然死亡的隐患。如果配伍得当，必定没有这种危害。
【气味】
味苦，微寒，无毒。
【主治】
治疗伤寒，补益不足。治疗金创（金属利器造成的创伤）、痈疡、骨折跌打损伤，接续筋骨。治疗妇女崩漏（非经期大量出血或淋漓不断），子宫寒冷，腰痛，关节拘急或弛缓。加入平胃散中治疗痢疾尤其有效。
[Flavor and Nature]
Sweet, pungent, very hot in nature, with slight toxicity. It belongs to the Yang within Yang, possessing a floating and ascending quality. After removing the rough outer bark, it is called Rougui (Cortex Cinnamomi). It enters the blood aspect of the Foot-Shaoyin Kidney Meridian and the Foot-Taiyin Spleen Meridian.
[Indications]
Tonifies deficiencies of the Lower Jiao; treats diseases of deep-seated cold and stubborn coldness. Promotes diuresis and fluid metabolism to relieve thirst. Expels wind-cold from the Ying (Nutritive) and Wei (Defensive) levels; treats spontaneous sweating due to exterior deficiency. It is contraindicated during spring and summer.
In autumn and winter, for abdominal pain in the lower body, no other herb can stop the pain like this one. Tonifies the insufficiency of the Mingmen (Gate of Life); benefits fire to dissipate yin-cold. Treats cold-bi syndrome and wind-induced aphonia; hemorrhage caused by excessive yin; diarrhea, dysentery, convulsions, and epilepsy. Therefore, for pediatric convulsions and diarrhea, Wuling San (Five-Ingredient Powder with Poria) is generally used to drain Bing Fire (Fire of the Small Intestine) and leach out dampness from the Earth element. The inclusion of Rougui internally serves to suppress Liver Wind and support Spleen Earth. Medical records state: A patient suffered from red, swollen, and painful eyes, with Spleen deficiency leading to inability to eat, and a full Liver pulse. Using cooling herbs to treat the Liver would further weaken the Spleen; using warming herbs to treat the Spleen would further exacerbate the Liver. However, by doubling the dosage of Rougui in warm and neutral formulas, one can subdue the Liver while benefiting the Spleen.
[Flavor and Nature]
Pungent, warm in nature, non-toxic. It has a floating and ascending quality that raises Yang Qi. It is the guiding herb for the Shaoyang Gallbladder Meridian itself, and also enters the Qi aspect of the Hand-Jueyin Pericardium Meridian and the Foot-Jueyin Liver Meridian.
[Indications]
Treats headache caused by wind-stroke entering the brain; wandering wind on the face. Treats all facial conditions, regulates all Qi disorders, and regulates all Blood disorders. Breaks up old blood stasis, nourishes new blood, promotes flesh growth, treats various sores and ulcers, and expels pus. For stagnation in the Middle Jiao, where it is necessary to lift and raise Qi, resolve various stagnations, and unblock Yin and Yang, no herb achieves this merit better than Chuanxiong (Rhizoma Chuanxiong). In cases of bloody dysentery where flow has resumed but pain persists, this indicates Yin deficiency with Qi stagnation. To assist Clear Yang Qi and promote Qi movement to regulate Blood, who else but Chuanxiong can provide relief? However, long-term single use may cause its pungent flavor to favor the Lung Meridian, leading to an excess of Lung Qi. This risks Metal overacting on Wood (Lung Metal suppressing Liver Wood), posing a danger of sudden death. If properly compounded, this harm will certainly be avoided.
[Flavor and Nature]
Bitter, slightly cold in nature, non-toxic.
[Indications]
Treats Shanghan (Cold Damage); tonifies deficiencies. Treats metal wounds, carbuncles and ulcers, fractures, and dislocations; reconnects tendons and bones. Treats metrorrhagia and metrostaxis in women, cold uterus, lumbar pain, and joint stiffness or flaccidity. When added to Pingwei San (Peaceful Stomach Powder), it is particularly effective for treating dysentery.