桃核（去皮、尖）五十个 桂枝三两 大黄四两 芒硝二两 甘草（炙）二两
右五味，以水七升，煮取二升半，去滓，内芒硝，更上火微沸，下火，先食温服五合
，日三服，当微利。
@@@
太阳病六、七日，表证仍在，脉微而沉，反不结胸，其人发狂者，以热在下焦，少腹
当□满，而小便自利者，下血乃愈。所以然者，以太阳随经瘀热在里故也。宜下之以
抵当汤。
【注】
太阳病六、七日，表证仍在者，脉当浮大。若脉微而沉，则是外有太阳之表而内见少
阴之脉，乃麻黄附子细辛汤证也。或邪入里，则为结胸、藏结之证。今既无太阳、少
阴兼病之证，而又不作结胸、藏结之病，但其人发狂，是知太阳随经瘀热，不结于上
焦之卫分，而结于下焦之荣分也。故少腹当□满，而小便自利者，而血蓄于下焦也。
下血乃愈者，言不自下者，须当下之，非抵当汤不足以逐血下瘀，乃至当不易之法也
。
【集注】
喻昌曰：蓄血而至于发狂，则热势攻心，桃核承气不足以动其血，桂枝不足以散其邪
，非用单刀直入之将，必不能斩关取胜也，故名其汤为抵当。抵者至也，乃至当不易
之良法也。
张璐曰：邪结于胸，则用陷胸以涤饮；邪结少腹，则用抵当以逐血。
程知曰：脉微而沉，邪结于里也。表证仍在，而反不结胸，太阳随经之邪，不结上焦
，而结下焦。小便自利，血病而气不病也。
程应旄曰：热结于气分，则为溺涩，热结于血分，则为蓄血，血既蓄而不行，自非大
下其血不愈。
桃核（去皮、尖）五十个 桂枝三两 大黄四两 芒硝二两 甘草（炙）二两
右五味，以水七升，煮取二升半，去滓，内芒硝，更上火微沸，下火，先食温服五合
，日三服，当微利。
@@@
太阳病（太阳经受邪所致的病证）六、七日，表证（病邪在肌表的证候）仍在，脉微而沉，反不结胸（邪热与痰水互结于胸膈的证候），其人发狂者，以热在下焦（人体下部脏腑及部位），少腹
当□满，而小便自利者，下血乃愈。所以然者，以太阳随经瘀热在里故也。宜下之以
抵当汤（破血逐瘀之剂）。
【注】
太阳病六、七日，表证仍在者，脉当浮大。若脉微而沉，则是外有太阳之表而内见少
阴之脉（少阴心肾受邪的脉象），乃麻黄附子细辛汤证（麻黄、附子、细辛组成的方剂所主治的证候）也。或邪入里，则为结胸、藏结（脏气虚衰，寒邪凝结于内的重证）之证。今既无太阳、少
阴兼病之证，而又不作结胸、藏结之病，但其人发狂，是知太阳随经瘀热，不结于上
焦之卫分（运行于体表、具有防御作用的营卫之气），而结于下焦之荣分（即营分，行于脉中、具有营养作用的营气）也。故少腹当□满，而小便自利者，而血蓄于下焦也。
下血乃愈者，言不自下者，须当下之，非抵当汤不足以逐血下瘀，乃至当不易之法也
。
【集注】
喻昌曰：蓄血而至于发狂，则热势攻心，桃核承气汤（活血祛瘀、通下泄热之剂）不足以动其血，桂枝不足以散其邪
，非用单刀直入之将，必不能斩关取胜也，故名其汤为抵当。抵者至也，乃至当不易
之良法也。
张璐曰：邪结于胸，则用陷胸（指小陷胸汤等清热化痰宽胸之剂）以涤饮；邪结少腹，则用抵当以逐血。
程知曰：脉微而沉，邪结于里也。表证仍在，而反不结胸，太阳随经之邪，不结上焦
，而结下焦。小便自利，血病而气不病也。
程应旄曰：热结于气分，则为溺涩，热结于血分，则为蓄血，血既蓄而不行，自非大
下其血不愈。
Peach Kernel (deprived of skin and tip) fifty pieces, Guizhi Tang (Cinnamon Twig Decoction) three liang, Dahuang four liang, Mangxiao two liang, Gancao (roasted) two liang.
The above five ingredients are boiled in seven sheng of water to obtain two and a half sheng. The dregs are removed, Mangxiao is added, and it is heated again until it boils slightly. Then the fire is removed. It should be taken warm, five he at a time before meals, three times a day, when there will be slight purgation.
@@@
In Taiyang disease (disease caused by pathogenic factors invading the Taiyang meridian) for six or seven days, if the exterior syndrome (syndrome where pathogenic factors are located on the body surface) still persists, the pulse is faint and deep, but contrary to Jie Xiong (a syndrome characterized by the binding of heat and phlegm-fluid in the chest), the patient experiences mania. This is because heat is located in the Xiajiao (lower jiao, referring to the lower part of the human body including organs like kidneys and bladder). There should be fullness in the Shaofu (lower abdomen), and if urination is normal, bleeding from below will lead to recovery. The reason for this is that Taiyang pathogenic factors have followed the meridians, causing stasis-heat to accumulate internally. Yi Xia Zhi (indicate using purgative method) with Didang Tang (Decoction for Overcoming Stagnation).
[Annotation]
In Taiyang disease for six or seven days, if the exterior syndrome still persists, the pulse should be floating and large. If the pulse is faint and deep, it indicates an external Taiyang exterior syndrome combined with an internal Shaoyin pulse (pulse pattern indicating Shaoyin Heart-Kidney pathology), which corresponds to the Zheng (syndrome) of Mahuang Fuzi Xixin Tang (Decoction of Ephedra, Prepared Aconite Root, and Asarum). Or, if the pathogen enters the interior, it becomes a Jie Xiong or Zang Jie (severe syndrome of cold-pathogen binding due to deficiency of zang-organs) syndrome. Now, since there is no syndrome of concurrent Taiyang and Shaoyin diseases, nor does it present as Jie Xiong or Zang Jie, but only the patient experiences mania, we know that Taiyang stasis-heat following the meridians does not bind in the Wei Fen (defensive qi level, primarily affecting the exterior) of the Shangjiao (upper jiao), but binds in the Ying Fen (nutritive qi level, primarily affecting the interior/blood) of the Xiajiao. Therefore, with fullness in the Shaofu and normal urination, blood is accumulating in the Xiajiao. "Bleeding from below leads to recovery" means that if it does not discharge spontaneously, it must be purged; only Didang Tang is sufficient to drive out blood stasis, making it the most appropriate and unchangeable method.
[Collected Annotations]
Yu Chang said: When blood accumulation reaches the point of mania, the heat intensity attacks the heart. Taohé Chengqi Tang (Decoction of Peach Kernels for Receiving Qi) is insufficient to move the blood, and Guizhi (Cinnamon Twig) is insufficient to disperse the pathogen. Without using a general who strikes directly with a single sword, one cannot break through the gates to achieve victory; hence the decoction is named Didang. "Di" means arrival, representing the most appropriate and unchangeable excellent method.
Zhang Lu said: When pathogen binds in the chest, Xian Xiong (referring to formulas like Xiao Xian Xiong Tang to clear heat and resolve phlegm-fluid) is used to cleanse fluids; when pathogen binds in the Shaofu, Didang is used to expel blood.
Cheng Zhi said: A faint and deep pulse indicates pathogen binding in the interior. Although the exterior syndrome persists, contrary to Jie Xiong, the Taiyang pathogen following the meridians does not bind in the Shangjiao but in the Xiajiao. Normal urination indicates blood pathology without qi pathology.
Cheng Yingmao said: Heat binding in the Qi Fen (qi level) results in difficult urination; heat binding in the Blood Fen (blood level) results in blood accumulation. Once blood accumulates and stagnates, naturally, only by vigorously purging the blood can recovery be achieved.