三豆汤 治天行痘疹。乡邻有此证，预服之，能活血解毒，则不染。
赤豆（即红小豆，一升） 大黑豆（一升） 绿豆（一升） 北草（三两）
上以三豆淘令净，用水八升，煮令豆熟为度。日逐空心，任意食豆饮汁七日，永不出。
龙凤膏
乌鸡卵（一个） 地龙（活而细小者，用一条，此田间蚯蚓也）
上以鸡卵开一小窍，入地龙在内，夹皮纸糊其窍，甑上蒸熟，
去地龙，与儿食之。每岁立春日食一枚，终身不出痘疹。觉邻有此证流行时，食一二枚亦好。
独圣丹
丝瓜老者，近蒂取三寸，固济于砂瓶内，桑柴火烧存性，为末，以如数配，砂糖捣成饼，时时与吃尽
为佳。小儿痘疹服此则少，或全然，只烧蒸三两日，不出者，或每遇作热时，即与食之，出痘必少。
永不出痘二五散
用有雄鸡蛋七枚，内取一枚，开一孔，去青黄净，将入鲜明好朱砂四钱九分，其孔以纸糊，用鸡抱去，
鸡雏将朱砂采，日精月华，各七日夜，收贮所用。再用起头结丝瓜一个，候老成种干燥，烧灰存性，为末。每
服朱砂五分，丝瓜灰五分，为细末，蜂蜜水调服，服过三次，亦不出痘疹，邻家出痘，就宜服之。
凡发热之初，急宜表汗，使脏腑胎毒及外感不正之气，尽从汗散，则痘出稀少。然表药必在红点未见
之前也，如发热壮盛者，痘出必重，急煎加味败毒散调三酥饼，热服表之，须令遍身出臭汗，则毒瓦斯表散，
痘出必稀。若得真犀角磨汁和入尤妙。如无三酥饼，煎败毒散调辰砂末表之，更研辰砂末调涂眼四围，或
黄柏膏之类，可免眼目之患。
凡发热之初，证类伤寒，疑似之间，或耳尻冷，呵欠咳嗽，面
赤，必是出痘之候，宜服升麻葛根汤加山楂、大力子，其疮必出，稀少而易愈。
凡发热之初，憎寒壮热，鼻流清涕，咳嗽痰涎，此因伤风伤寒而得，以参苏饮，或调紫草膏表之。
凡热盛发狂，谵语烦渴者，急煎败毒散调辰砂末解之。
凡发热之初，或作腹痛及膨胀者，由毒瓦斯与外邪相搏，欲出不得出也，用参苏饮去参、苓，加砂仁、陈皮表之。
凡热盛吐衄，面黄粪黑，瘀血相续，及一切失血之证，并宜犀角地黄汤。
凡热盛发惊搐为吉候，用红线散调辰砂六一散表之。痰涎壅盛，不省人事者，薄荷汤化下抱龙丸。
凡发热欲出痘，作腰痛者，急服神解汤，出汗，腰痛止为度，不止再进一服，免出肾经之痘。
凡因积冷腹痛，或胃寒泄泻呕吐者，用理中汤加砂仁、陈皮、香附，温而出之。
热毒本盛者，表药出汗，热退为佳，其有一切杂证，皆由毒瓦斯
欲出不能故也，但宜表散，使毒瓦斯得泄，则诸症自退，痘亦稀矣，
此治初热，预防要法。
三豆汤：治疗时行痘疹。如果乡邻中有人出现这种病症，预先服用此方，能够活血解毒，从而不被传染。
赤豆（即红小豆，一升） 大黑豆（一升） 绿豆（一升） 北草（三两）
以上药材将三豆淘洗干净，用水八升，煮至豆子熟透为止。每天空腹时，随意吃豆喝汁，连续七日，即可永远不出痘疹。
龙凤膏：
乌鸡卵（一个） 地龙（活且细小的，用一条，这是田间的蚯蚓）
以上将鸡蛋开一个小孔，放入地龙在内，用夹皮纸糊住小孔，在蒸笼上蒸熟，
去掉地龙，给小儿食用。每年立春之日吃一枚，终身不会出痘疹。若感觉邻居家有此病流行时，吃一二枚也好。
独圣丹：
老丝瓜，靠近瓜蒂处截取三寸，密封固定在砂瓶内，用桑柴火烧至存性（保留药性），研为细末，按数量配比，与砂糖捣成饼状，时时让患儿服食吃完为佳。小儿患痘疹服用此方则症状减轻，或完全不出。只需烧制蒸煮两三日，若仍不出痘，或每当发热时，就给予服用，出痘必然减少。
永不出痘二五散：
取有雄鸡下的蛋七枚，从中取出一枚，开一孔，去净蛋黄蛋白，将鲜明优质的朱砂四钱九分装入孔内，以纸糊住孔口，用母鸡抱孵，
待小鸡孵化后，朱砂吸收了日精月华之气，共经过七个日夜，收贮备用。再取初结的一个丝瓜，待其老熟干燥，烧成灰保留药性，研为细末。每次服用朱砂五分、丝瓜灰五分，研为细末，用蜂蜜水调服，服用三次后，也不会出痘疹。邻居家出痘时，适宜服用此方。
凡是发热初期，急宜使用发汗解表法，使脏腑内的胎毒及外感不正之气，全部随汗液发散出去，则痘疹发出稀少。然而解表药物必须在红色斑点尚未出现之前使用。如发热壮盛者，痘疹发出必然严重，急煎加味败毒散配合三酥饼，热服以解表，必须令全身出臭汗，则毒瓦斯从体表散发，痘疹发出必然稀少。如果加入磨汁的真犀角尤为奇妙。如果没有三酥饼，煎煮败毒散配合辰砂末解表，更研细辰砂末涂抹眼睛四周，或者使用黄柏膏之类，可避免眼目患病。
凡是发热初期，证候类似伤寒，处于疑似之间，或者耳廓和尾骶部发冷，打哈欠咳嗽，面色发红，必定是出痘的征兆，适宜服用升麻葛根汤加山楂、牛蒡子，其疮疹必能发出，且稀少而易愈。
凡是发热初期，憎恶寒冷且高热，鼻流清涕，咳嗽痰涎，这是因为伤风或伤寒所致，可用参苏饮，或者配合紫草膏解表。
凡是热势极盛导致发狂，胡言乱语，烦躁口渴者，急煎败毒散配合辰砂末以解除热毒。
凡是发热初期，出现腹痛及腹部胀满者，是由于毒瓦斯与外邪相互搏结，想要发出却发不出来，用参苏饮去掉人参、茯苓，加砂仁、陈皮以解表。
凡是热盛导致吐血衄血，面色发黄，大便黑色，瘀血相继出现，以及一切失血证候，都适宜使用犀角地黄汤。
凡是热盛引发惊厥抽搐为吉兆，用红线散配合辰砂六一散解表。痰涎壅盛，不省人事者，用薄荷汤送服抱龙丸。
凡是发热欲出痘，出现腰痛者，急服神解汤，出汗，腰痛停止为止，若不停止再进服一剂，以避免肾经出痘。
凡是因积冷导致腹痛，或者胃寒泄泻呕吐者，用理中汤加砂仁、陈皮、香附，温补并透发出来。
热毒本已旺盛者，使用解表药出汗，热退为佳，其余一切杂证，都是由毒瓦斯想要发出而不能发出的缘故，只宜解表发散，使毒瓦斯得以宣泄，则诸症自然消退，痘疹也会稀少，
这是治疗初热阶段，预防的关键方法。
San Dou Tang (Three Bean Decoction): Treats epidemic variola and exanthema. If neighbors in the village have this condition, taking it in advance can invigorate blood and resolve toxicity, thereby preventing infection.
Vigna angularis (Red Adzuki Bean, one sheng) Phaseolus vulgaris var. nanus (Large Black Bean, one sheng) Vigna radiata (Mung Bean, one sheng) Beicao (Northern Grass, three liang)
Wash the three beans thoroughly. Use eight sheng of water and boil until the beans are cooked. Eat the beans and drink the broth freely on an empty stomach every day for seven days; this will permanently prevent smallpox.
Long Feng Gao (Dragon and Phoenix Paste):
Gallus gallus domesticus egg (one) Pheretima aspergillum (Earthworm, live and small, use one; this is the earthworm found in fields)
Make a small hole in the chicken egg, insert the earthworm inside, seal the hole with paper-wrapped skin, and steam it in a steamer until cooked.
Remove the earthworm and feed it to the child. Eating one egg on each Start of Spring annually will prevent smallpox for life. If you sense an outbreak among neighbors, eating one or two eggs is also beneficial.
Du Sheng Dan (Supreme Holy Pill):
Take old Luffa cylindrica fruit, cut three cun near the stem, seal it securely in a clay pot, and burn it with mulberry wood fire until the carbonized nature remains. Grind into powder. Mix with sugar according to the ratio, pound into cakes, and let the patient consume them gradually until finished. Taking this for pediatric variola/exanthema reduces severity or prevents eruption entirely. Burning and steaming for two to three days suffices; if eruption does not occur, administer whenever fever arises to ensure minimal eruption.
Yong Bu Chu Dou Er Wu San (Permanently Preventing Smallpox Two-Five Powder):
Take seven eggs laid by a rooster-containing hen. Select one egg, make a hole, and empty the yolk and white completely. Insert four qian nine fen of bright, high-quality Cinnabar (Zhusha) into the hole, seal with paper, and incubate under a hen. After the chick hatches, the Cinnabar has absorbed the essence of sun and moon over seven days; store for use. Take one young Luffa cylindrica fruit that has matured and dried, burn to ash retaining its medicinal property, and grind into powder. For each dose, mix five fen of Cinnabar and five fen of Luffa ash into fine powder, and take mixed with honey water. After three doses, smallpox/exanthema will not erupt. It is suitable to take when neighbors have smallpox.
At the initial stage of fever, it is urgent to induce sweating to release the pathogenic factors. This allows the fetal toxins within the zang-fu organs and the external pathogenic qi to dissipate through sweat, resulting in sparse eruptions. However, exterior-releasing medicines must be administered before red spots appear. If fever is intense, eruptions will likely be severe. Immediately decoct Jia Wei Bai Du San (Modified Decoction to Overcome Toxins) and mix with San Su Bing (Three Crisp Cakes), taking it hot to release the exterior. It is necessary to induce profuse foul-smelling sweat throughout the body so that toxic vapors disperse from the surface, ensuring sparse eruptions. Adding ground real Rhinoceros Horn (Xijiao) is especially excellent. If San Su Bing is unavailable, decoct Bai Du San mixed with Chen Sha (Cinnabar) powder for exterior release. Additionally, finely grind Chen Sha powder and apply around the eyes, or use Huang Bo Gao (Phellodendron Ointment), to avoid ocular complications.
At the initial stage of fever, symptoms resemble Taiyang disease (Cold Damage), creating diagnostic uncertainty. Signs such as cold ears and sacrum, yawning, coughing, and facial flushing indicate impending eruption. It is appropriate to take Sheng Ma Ge Gen Tang (Kudzu and Cimicifuga Decoction) added with Shan Zha (Hawthorn) and Niu Bang Zi (Arctium Fruit). The eruptions will emerge sparsely and heal easily.
At the initial stage of fever, aversion to cold with high fever, clear nasal discharge, and cough with phlegm are caused by wind-cold invasion. Use Shen Su Yin (Ginseng and Perilla Drink) or apply Zi Cao Gao (Arnebia Ointment) to release the exterior.
If heat is extreme leading to mania, delirious speech, restlessness, and thirst, immediately decoct Bai Du San mixed with Chen Sha powder to resolve the heat.
At the initial stage of fever, abdominal pain and distension occur because toxic vapors struggle against external pathogens, wanting to erupt but unable to do so. Use Shen Su Yin, removing Ren Shen (Ginseng) and Fu Ling (Poria), adding Sha Ren (Amomum Fruit) and Chen Pi (Tangerine Peel) to release the exterior.
For cases where extreme heat causes hematemesis and epistaxis, yellow complexion, black stool, continuous blood stasis, and all types of hemorrhagic syndromes, Xi Jiao Di Huang Tang (Rhinoceros Horn and Rehmannia Decoction) is indicated.
Convulsions and tremors during high fever are considered auspicious signs. Use Hong Xian San (Red Thread Powder) mixed with Chen Sha Liu Yi San (Cinnabar Six-to-One Powder) to release the exterior. For excessive phlegm obstruction and unconsciousness, administer Bao Long Wan (Protect Dragon Pill) dissolved in Bo He Tang (Mint Decoction).
When fever precedes eruption accompanied by lower back pain, urgently take Shen Jie Tang (Divine Resolution Decoction) to induce sweating. Continue until back pain ceases; if not relieved, administer another dose to prevent eruptions involving the Kidney meridian.
For abdominal pain due to accumulated cold, or vomiting and diarrhea due to Stomach cold, use Li Zhong Tang (Regulate the Middle Decoction) added with Sha Ren, Chen Pi, and Xiang Fu to warm and vent the condition.
In cases where heat toxin is inherently strong, inducing sweat with exterior-releasing medicine to reduce fever is ideal. All other miscellaneous symptoms arise because the toxic vapors desire to erupt but cannot. Only exterior-dispersing methods should be used to allow toxic vapors to vent; then, various symptoms will naturally recede, and eruptions will be sparse.
This is the crucial preventive method for treating the initial heat stage.