有大毒。
搜脓拔毒，去腐生新，痈疡久久不愈，外用僵局能平。
此药乃用水银等升华而成，有毒不能内服。外用伍乳香、没药为散，名三香散，撒于膏
药，
贴于疮口，化腐提毒，收效颇捷。
（见泻下药）
味苦、性平，有毒。研细，水飞。
涂蛇虺之伤，杨梅疔毒，疥癣痔疡，遵法搽敷力不小。化痰涎之积，血瘀风淫，邪干尸
疰，
依方制服效偏奇。
独入厥阴，为诸疮杀毒之药。与巴豆、郁金为伍醋丸，名雄黄解毒丸。治急症喉痹有良
效，
乃急救之药也。
味酸、涩，性寒，无毒。入脾、胃二经。甘草为使。恶牡蛎、麻黄。
外治∶收脱肛阴挺，理疥癣湿淫。内服∶消痰止利，涤热祛风。
矾之用有四∶诸血脱肛，阴挺疮疡，取其酸涩而收也；喉痹、痈疽、蛇伤、虫毒，取其
解毒
也；吐风热痰涎，取其酸苦涌泄也；治风痰、泄痢、崩带，取其收而燥湿也。多服伤骨损心
肺。
味酸，性大热，有毒。入心、肾二经。畏细辛、朴硝、铁、醋，用莱菔剜空，入硫合定，
糠
火煨熟，紫背浮萍同煮，皂角汤淘去黑浆。
外用∶杀虫燥寒湿。疥疮尽扫。内服∶壮阳坚筋骨，阴气全消。老年风秘，君半夏而立
通。
泄痢虚寒，佐蜡矾而速止，艾汤投一匕，阴毒回春。温酒送三丸，沉寒再造。
秉纯阳之精，能补君火，可救颠危，乌须黑发，亦可引年，然须制炼得宜，断房者，方
可用
之，一有不当，贻祸非轻，故极少用。外治疥疮，收效甚速。然同时须服利湿解毒之剂，庶
不致疮毒内攻，而生浮肿难治。
（雄黄）有大毒。
能搜剔脓液、拔除毒素，去除腐肉、促进新肉生长，对于痈疽疮疡长期不愈合的情况，外用可平息僵局。
此药是由水银等物质升华而成，有毒性，不能内服。外用时配合乳香、没药制成散剂，名为三香散，撒在膏药上，贴敷于疮口，能化腐提毒，收效相当迅速。
（见泻下药章节）
味苦，性平，有毒。需研成细粉，用水飞法处理。
涂抹治疗蛇虫咬伤、杨梅疔毒、疥癣痔疮疮疡，遵照方法搽敷效果显著。化解痰涎积聚、血瘀风邪侵袭、邪气侵犯尸疰，依照方剂服用疗效奇特。
独入厥阴经，是治疗各种疮疡的杀毒药物。与巴豆、郁金配合醋制为丸，名为雄黄解毒丸。治疗急症喉痹有良好效果，属于急救药物。
（白矾）味酸、涩，性寒，无毒。入脾、胃二经。以甘草为使药。畏牡蛎、麻黄。
外用：收敛脱肛、阴挺，调理疥癣湿邪侵袭。内服：消除痰饮、止泻，清除热邪、祛除风邪。
白矾的作用有四方面：对于各种血脱导致的脱肛、阴挺疮疡，取其酸涩收敛之性；对于喉痹、痈疽、蛇伤、虫毒，取其解毒之性；对于呕吐风热痰涎，取其酸苦涌泄之性；对于治疗风痰、泄痢、崩漏带下，取其收敛并燥湿之性。多服会伤骨损心肺。
（硫黄）味酸，性大热，有毒。入心、肾二经。畏细辛、朴硝、铁、醋，需用莱菔（萝卜）挖空，放入硫黄混合定住，用糠火煨熟，与紫背浮萍同煮，用皂角汤淘洗去黑浆。
外用：杀虫、燥除寒湿。疥疮尽扫。内服：壮阳、坚固筋骨，阴气全消。老年风秘，以半夏为主药而立通利之法。
泄痢虚寒，佐以蜡矾而迅速止住，艾汤送服一匕，阴毒回春。温酒送服三丸，沉寒再造。
禀受纯阳之精，能补益君火，可救颠危，乌须黑发，也可延年益寿，但必须炼制得当，断绝房事者，才可用之，一旦使用不当，祸患非轻，所以极少使用。外治疥疮，收效甚速。但同时须服用利湿解毒的药物，否则可能导致疮毒内攻，而生浮肿难治。
(Assuming the subject is Realgar based on context, though text starts with "Has great toxicity")
Has great toxicity.
It can search out pus and draw out toxins, remove necrotic tissue and generate new flesh. For chronic non-healing sores and ulcers, external application can resolve stagnation.
This medicine is produced by sublimation of mercury and other substances. It is toxic and cannot be taken internally. When used externally, it is combined with Frankincense (Ruxiang) and Myrrh (Moyao) to form a powder named Sanxiang San (Three Fragrances Powder). Sprinkled onto plasters and applied to the wound, it resolves necrosis and extracts toxins, yielding rapid results.
(See Laxative category)
Bitter in taste, neutral in nature, toxic. Grind into fine powder and process by water levigation.
Applied topically for snake and scorpion bites, yaws (yangmei ding), tinea, hemorrhoids, and sores, following the method yields significant power. It resolves accumulation of phlegm-saliva, blood stasis, wind pathogens invading the body, and evil qi affecting corpse-guest diseases; administering according to prescription yields remarkable efficacy.
It enters exclusively the Jueyin channel and serves as a detoxifying herb for various sores and ulcers. Combined with Croton Seed (Badou) and Turmeric Tuber (Yujin), vinegar-pilled, it is named Xionghuang Jiedu Wan (Realgar Detoxification Pill). It has good effects for treating acute sore throat obstruction (houbi) and is an emergency rescue medicine.
(Alum/Bai Fan)
Sour and astringent in taste, cold in nature, non-toxic. Enters the Spleen and Stomach meridians. Licorice Root (Gancao) acts as the guiding herb. It is incompatible with Oyster Shell (Muli) and Ephedra Herb (Mahuang).
External use: Astringes prolapsed rectum and uterine prolusion (yinting), treats tinea and dampness invasion. Internal use: Eliminates phlegm, stops diarrhea, clears heat, and dispels wind.
The uses of Alum are fourfold: For various cases of blood loss leading to prolapsed rectum, uterine prolusion, and sores, its sour and astringent properties are utilized for astringency; for sore throat obstruction, carbuncles, snake bites, and insect poison, its detoxifying property is utilized; for vomiting wind-heat phlegm-saliva, its sour and bitter properties are utilized for inducing emesis; for treating wind-phlegm, dysentery, metrorrhagia, and leukorrhea, its astringing and drying-dampness properties are utilized. Excessive intake damages bones and harms the heart and lungs.
(Sulfur/Liu Huang)
Sour in taste, extremely hot in nature, toxic. Enters the Heart and Kidney meridians. It fears Asarum (Xixin), Mirabilite (Piaoxiao), iron, and vinegar. Preparation involves hollowing out a radish (Laifu), placing sulfur inside to fix it, roasting it with bran fire, boiling it together with Purple-backed Duckweed (Zibei Fuping), and washing away the black slurry with Sophora Flower (Zaojiao) decoction.
External use: Kills parasites and dries cold-dampness. Sweeps away all tinea. Internal use: Strengthens yang, consolidates sinews and bones, eliminates yin pathogenic factors. For elderly constipation due to wind, Pinellia Tuber (Banxia) is used as the sovereign herb to establish unblocking methods.
For dysentery and diarrhea due to deficiency-cold, it is assisted by Wax-Alum pills to stop rapidly; one spoonful administered with Mugwort (Aiyi) decoction brings spring back to yin-toxin. Three pills sent down with warm wine reconstructs extreme cold.
Endowed with the essence of pure yang, it can supplement the Minister Fire, rescue critical conditions, darken hair and beard, and prolong life. However, it must be processed properly. Only those who abstain from sexual intercourse may use it. If used improperly, the disaster will be severe, hence it is rarely used. External treatment for tinea yields very rapid results. However, simultaneously, diuretic and detoxifying agents must be taken to prevent the toxin from attacking inward and causing difficult-to-treat edema.