咸甘平小毒。火熬用之。
《本经》主小儿二十种惊痫，蛇痫，癫疾螈 ，弄舌摇头，寒热肠痔，蛊毒。
发明 蛇蜕属巽走肝，故《本经》治小儿惊痫等病，一皆风毒袭于经中之象。其入药有
四义，一能辟恶取其性灵也，故治邪辟鬼魅，蛊疟诸疾。二能驱风取其性窜也，故治惊痫瘢
驳，偏正头风，喉舌诸疾。三能杀虫，故治恶疮痔漏，疥癣诸疾，用其毒也。四有蜕义，故
治眼目翳膜，胎衣不下，皮肤之疾，会意以从其类也。
即南蛇
甘苦寒小毒。
发明 蚺蛇产岭南，禀己土之气，其胆受甲乙风木，其味苦中有甘，所主皆厥阴、太阴
之病。其治心腹 痛者，虫在内攻啮也。下部 疮者，虫在外侵蚀也。湿热则生虫，燥湿则
杀虫，内外施之皆可取用，更能散肿消血，故直谏之臣受廷杖者，临时服少许则血不凝滞于
内。又能明目凉血，除疳杀虫。惜乎，难得真者。
甘咸温有毒。产蕲州者良，禁犯铁。凡用去头尾，酒浸，酥炙，火缓焙，去尽
皮骨，此物甚毒，不可不防。胁有方胜，尾上有拂者真。
发明 蛇性窜，能引药至于风痰处，故能治一切风病。其风善行数变，蛇亦善行数蜕，
所以能透骨搜风，为大风、白癜风、风痹、惊搐、癞癣恶疮要药，取其内走脏腑，外彻皮肤
，无处不到也。阴虚血少内热生风者，非其所宜。凡服蛇酒药，切忌见风。开坛时须避其气
，免致面目浮肿。凡疠风曾服过大枫子仁者，服白花蛇无效。
【蛇蜕】
味咸、甘，性平，有小毒。使用时需经火熬制。
《神农本草经》记载其主治小儿二十种惊痫，包括蛇痫（一种类似蛇形抽搐的癫痫）、癫疾引起的肢体抽搐、弄舌摇头，以及寒热往来、肠痔、蛊毒等病症。
【发明】
蛇蜕在五行中属巽卦，走肝经，因此《神农本草经》中治疗小儿惊痫等疾病，都是针对风毒侵袭经络的表现。它入药有四种作用：一是能辟除邪气，取其灵性，所以用于治疗邪气鬼魅、蛊疟等各种疾病；二是能驱散风邪，取其性质窜动，所以用于治疗惊痫、皮肤斑驳、偏头痛和正头痛、咽喉舌头等疾患；三是能杀虫，所以用于治疗恶疮、痔漏、疥癣等各种疾病，是利用其毒性；四是有“蜕皮”的含义，所以用于治疗眼目翳膜、胎衣不下、皮肤疾病，是取同类相从之意。
即南蛇（此处指另一种蛇类或部位，原文语境下通常指代特定药用蛇体部分，但根据下文“蚺蛇胆”标题，此处可能为排版错误或特指某蛇之皮/肉，结合后文“蚺蛇胆”独立成段，此段“即南蛇”可能是对前文蛇蜕来源的补充或另一条目开头，但根据常见版本，《本经逢原》中“蛇蜕”后直接接“蚺蛇胆”。若按字面翻译，“即南蛇”意为“就是南方的蛇”，但结合上下文结构，这更像是另一个药材条目的开始，或者是对蛇蜕产地的说明。鉴于原文结构，我将“即南蛇”视为独立短句处理，但主要信息集中在后面的“蚺蛇胆”标题上。*注：仔细核对《本经逢原》原文，通常格式为【蛇蜕】...【蚺蛇胆】... 此处原文“即南蛇”位于“蛇蜕”段落末尾与“蚺蛇胆”标题之间，极有可能是排版错误，将“蚺蛇胆”的标题误植或混入。但在严格忠实原文任务下，我将其作为文本一部分翻译。然而，观察下一段标题“蚺蛇胆”，再下一段“白花蛇”，中间夹杂的“即南蛇 甘苦寒小毒”实际上描述的是蚺蛇胆的特性。因此，这里的“即南蛇”应理解为引出“蚺蛇胆”这一药材，或者原文此处有缺漏。为了准确，我将“即南蛇”后的内容归入蚺蛇胆的描述，因为“甘苦寒小毒”是蚺蛇胆的性味。*
*修正策略*：原文结构略显混乱。标准结构应为：
1. 蛇蜕
2. 蚺蛇胆
3. 白花蛇
原文中“即南蛇”出现在蛇蜕之后，蚺蛇胆之前，且紧接着“甘苦寒小毒”，这显然是蚺蛇胆的性味。因此，翻译时将“即南蛇”理解为对蚺蛇胆的引入或别名说明，或直接将其内容合并至蚺蛇胆部分。但为了逐句对照，我先列出原文句子。
【蚺蛇胆】
味甘、苦，性寒，有小毒。
【发明】
蚺蛇产于岭南地区，禀受己土之气，其胆接受甲乙风木之气，味道苦中带甘，所主治的都是厥阴经和太阴经的疾病。它治疗心腹疼痛，是因为虫子在体内攻咬所致；治疗下部疮疡，是因为虫子在体外侵蚀所致。湿热环境容易生虫，燥湿环境可以杀虫，内服外用都可以取用，更能消散肿胀、消除瘀血，所以那些因直言进谏而遭受廷杖的大臣，临时服用少许则血液不会在体内凝滞。又能明目凉血，去除疳积、杀虫。可惜很难得到真品。
【白花蛇】
味甘、咸，性温，有毒。产自蕲州的品质优良，禁止接触铁器。凡是用时要去掉头尾，用酒浸泡，用酥油炙烤，用火缓慢焙干，去掉所有的皮骨。此物毒性很大，不可不防备。胁下有方胜花纹，尾巴上有佛指甲（或拂尘状）特征的是真品。
【发明】
蛇的性质窜动，能引导药物到达风痰所在之处，所以能治疗一切风病。风邪善于运行变化，蛇也善于爬行和蜕皮，所以能透入骨骼搜剔风邪，是大风病（麻风）、白癜风、风痹、惊搐、癞癣恶疮的要药，取其内走脏腑，外彻皮肤，无处不到的特性。阴虚血少、内热生风的人，不适合使用。凡是服用蛇酒药的人，切忌见风。开坛时必须避开其气味，以免导致面目浮肿。凡是患疠风（麻风）曾经服用过大枫子仁的人，再服用白花蛇就无效了。
[She Tui (Snake Slough)]
Taste: Salty, Sweet. Nature: Neutral. Toxicity: Slightly toxic. Preparation: Roast over fire before use.
*Shennong Bencao Jing* records its indications for twenty types of pediatric convulsions and epilepsy, including "snake epilepsy" (epilepsy resembling snake-like convulsions), manic disorders with limb twitching, tongue protrusion and head shaking, alternating chills and fever, intestinal hemorrhoids, and gu poison.
[Invention]
Snake slough belongs to the Xun trigram and enters the Liver meridian. Therefore, the treatments for pediatric convulsions and epilepsy in *Shennong Bencao Jing* all reflect the manifestation of wind-toxin invading the meridians. Its medicinal application has four aspects: First, it can ward off evil spirits due to its spiritual nature, thus treating diseases caused by evil influences, ghosts, gu malaria, etc. Second, it can dispel wind due to its penetrating nature, thus treating convulsions, skin mottling, lateral and frontal headaches, and throat and tongue disorders. Third, it can kill parasites, thus treating malignant sores, hemorrhoids with fistula, scabies, and tinea, utilizing its toxicity. Fourth, it carries the meaning of "shedding," thus treating eye nebulae, retained placenta, and skin diseases, following the principle of similarity.
[Ran She Dan (Python Gallbladder)]
Taste: Sweet, Bitter. Nature: Cold. Toxicity: Slightly toxic.
[Invention]
Python is produced in the Lingnan region, inheriting the Qi of Ji Earth. Its gallbladder receives the Wind-Wood Qi of Jia and Yi. Its taste is bitter with a sweet aftertaste, and it primarily treats diseases of the Jueyin and Taiyin meridians. It treats heart and abdominal pain caused by internal parasites gnawing; it treats lower body ulcers caused by external parasites eroding. Damp-heat generates parasites, while dryness-dampness kills them; both internal and external applications are effective. It can also dissipate swelling and resolve blood stasis. Thus, officials who received imperial beatings for straight advice could take a small amount temporarily to prevent internal blood stagnation. It can also brighten the eyes, cool blood, eliminate childhood malnutrition (gan syndrome), and kill parasites. Unfortunately, genuine products are rare.
[Bai Hua She (Bungarus multicinctus / Chinese Cobra)]
Taste: Sweet, Salty. Nature: Warm. Toxicity: Toxic. Products from Qizhou are superior. Avoid contact with iron. When used, remove the head and tail, soak in wine, roast with butter, slowly bake over fire, and remove all skin and bone. This substance is very toxic and must be handled with caution. Authentic specimens have a square-patterned mark on the flanks and a brush-like tip on the tail.
[Invention]
The nature of snakes is penetrating, allowing them to guide medicines to areas affected by wind-phlegm, thus treating all wind diseases. Wind pathogens move rapidly and change frequently; snakes also crawl swiftly and shed their skins. Therefore, they can penetrate bones and search out wind, making them essential herbs for severe wind diseases (leprosy), vitiligo, wind-bi syndrome, convulsions, and leprous tinea/malignant sores. They work by entering the zang-fu organs internally and reaching the skin externally, going everywhere. They are not suitable for patients with yin deficiency, blood insufficiency, and internal heat generating wind. Those taking snake wine must strictly avoid exposure to wind. When opening the jar, one must avoid inhaling its odor to prevent facial and ocular edema. Patients with leprosy who have previously taken seeds of *Aleurites fordii* (Big Maple Seed) will find Bai Hua She ineffective.