禀土金之气，色赤则象火，故味甘、酸、辛，气大温，无毒。气薄味浓，降而能
收，阳中阴也。入手阳明大肠，兼入手足少阴经。味涩可以去脱，色赤可以入血，甘温
可以补中，所以为阴分收敛补益及涤除温热之用也。
赤石脂，系收敛之剂。火锻醋淬，研碎，百溃疡疽，收口长肉，一切来血，止塞
归经，养心气塞精，住泻痢除痛。治肠癖 下，崩带脱肛，取色赤以和畅血脉。且体重
而涩，直入下焦，以收敛也。治胞衣不下者，取体质之重，兼辛温而使恶血化也。故
云∶“固肠胃有收敛之能，下胞衣无推荡之峻”。
主治（痘疹合参） 治痘疮胃虚泻痢不止者，权用人丸药，为去脱收涩之方，宜
红醋淬用之。
又名凝水石，又名白水石，生于卤地盐之精也。禀积阴之气而成，味辛、咸，气大
寒，无毒。《经》曰∶小热之气，凉以和之；大热之气，寒以取之。又曰∶热淫于内，治
以咸寒。故大寒微咸之气，以为软坚去滞除热利水之需，然只可暂治有余邪热及敷汤火
所伤。若虚人虚热，并宜切禁。
寒水石，却胃中热，及五脏伏热，解巴豆毒，并丹石诸毒伤寒劳复，兼治积聚邪
热，亦除烦渴饮水，胃热牙痛，水肿，小腹作痛，凉血降火神剂。汤火所伤，敷搽即
愈。未溃者，研末油调；已破者，研末干掺。
主治（痘疹合参） 功效同前。
禀受土、金二气，色泽赤红则象征火性，因此味道甘甜、酸涩、辛散，药性大温，无毒。其气轻薄而味浓厚，作用趋势为下降且具有收敛之效，属于阳中蕴阴之物。主要归入手阳明大肠经，兼入足少阴肾经和手少阴心经。味涩能够固摄滑脱，色赤能够入血分，甘温能够补益中焦，所以被用于阴分的收敛补益以及清除温热邪气。
赤石脂，属于收敛类药物。经过火煅烧后以醋淬炼，研磨成碎末，可用于治疗各种溃疡疽疮，促进伤口愈合、生长肌肉；对于各种出血症状，能止血并引导血液回归正常经络；能养护心气、固摄精气，止住腹泻痢疾并消除疼痛。治疗肠癖（痢疾）下血、崩漏带下、脱肛等症，取其色赤以调和畅达血脉。且因其质地沉重而味涩，能直达下焦，起到收敛作用。治疗胞衣不下（胎盘滞留），是取其体质沉重，兼有辛温之性而使恶血化除。所以说：“固护肠胃具有收敛的功能，排出胞衣没有推荡攻下的峻烈。”
主治（参考《痘疹合参》）：治疗痘疮因胃虚导致泻痢不止者，权宜使用丸剂药物，作为去脱收涩的方剂，适宜用红醋淬炼后使用。
又名凝水石，又名白水石，生于卤地盐之精华。禀受积聚的阴气而成，味道辛、咸，药性大寒，无毒。《内经》说：轻微的热邪之气，用凉性药物来调和它；严重的大热之气，用寒性药物来祛除它。又说：热邪淫盛于体内，用咸寒的药物来治疗。因此，这种大寒微咸的药性，被用作软坚散结、去除积滞、清除热邪、通利小便的需要，但只可暂时用于治疗有余的邪热以及外敷汤火烫伤。如果是虚人出现的虚热，应当严格禁止使用。
寒水石，能清除胃中的热邪，以及五脏潜伏的热邪，解除巴豆毒及丹石类药物的毒性，治疗伤寒劳复（伤寒病愈后因劳累复发），兼治积聚的邪热，也能消除烦渴多饮、胃热牙痛、水肿、小腹疼痛，是凉血降火的灵验药剂。对于汤火烫伤，外敷搽涂即可痊愈。未溃破者，研成粉末用油调敷；已破溃者，研成粉末直接干撒。
主治（参考《痘疹合参》）：功效与前述相同。
Endowed with the Qi of Earth and Metal, its red color corresponds to Fire; therefore, it tastes sweet, sour, and acrid, has a strongly warm nature, and is non-toxic. Its Qi is light and thin while its flavor is dense; its action descends and astringes, representing Yin within Yang. It enters the Hand-Yangming Large Intestine Meridian and concurrently enters the Foot-Shaoyin Kidney Meridian and Hand-Shaoyin Heart Meridian. Its astringent flavor can secure against slipping and discharge; its red color can enter the Blood level; its sweet and warm nature can tonify the Middle Jiao. Thus, it is used for astringing and tonifying in the Yin level, as well as for clearing and eliminating warm-heat pathogens.
Chishizhi (Red Halloysite), being an astringent agent, when calcined by fire and quenched in vinegar, then ground into powder, can treat various ulcers and carbuncles, promoting wound closure and flesh regeneration; for all types of bleeding, it stops hemorrhage and guides blood back to its proper channels; it nourishes Heart Qi, secures Essence, arrests diarrhea and dysentery, and alleviates pain. In treating Changpi (dysentery) with lower bleeding, metrorrhagia, leukorrhea, and rectal prolapse, its red color is utilized to harmonize and unblock the blood vessels. Furthermore, due to its heavy weight and astringency, it directly reaches the Lower Jiao for astringent purposes. For treating retained placenta (Baoyi buxia), its heavy texture is utilized, combined with its acrid-warm nature to transform stagnant blood. Hence it is said: "It possesses the ability to consolidate the intestines and stomach through astringency, yet expels the placenta without the harshness of purgative pushing."
Indications (referencing *Douzhen He Can*): For treating persistent diarrhea and dysentery caused by Wei deficiency in smallpox cases, pill preparations may be used temporarily as a formula for securing against slipping and astringing; it is suitable to use after quenching in red vinegar.
Also known as Ningshuishi (Congealed Water Stone) or Baishuishi (White Water Stone), it forms from the essence of salt in saline lands. It is formed by accumulating Yin Qi, tastes acrid and salty, has a strongly cold nature, and is non-toxic. The *Classic* states: "For mild heat Qi, use cool agents to harmonize it; for severe heat Qi, use cold agents to eliminate it." It also states: "When heat pathogen overflows internally, treat it with salty-cold agents." Therefore, this strongly cold and slightly salty nature is required for softening hardness, removing stagnation, clearing heat, and promoting urination. However, it should only be used temporarily for excess heat pathogens and for external application on scalds and burns. If there is deficient heat in deficient persons, it must be strictly contraindicated.
Hanshuishi (Cold Water Stone) clears heat in the Stomach and latent heat in the Five Zang organs, resolves toxicity from Croton seed (Badou) and Danchi minerals, treats relapse of cold damage due to overexertion (Laofu), concurrently addresses accumulated heat pathogens, and relieves irritability, thirst with excessive drinking, Stomach heat toothache, edema, and lower abdominal pain. It is a divine agent for cooling blood and descending fire. For scalds and burns, applying it externally leads to immediate healing. For lesions not yet ulcerated, grind into powder and mix with oil for application; for already broken lesions, grind into powder and apply dry.
Indications (referencing *Douzhen He Can*): Efficacy is the same as mentioned above.