大寒。主目热赤痛，止渴。
陶隐居云∶生水田中及湖渎岸侧，形圆大如梨、桔者，人亦煮食之。煮汁，亦疗热，醒
酒，
止渴。患眼痛，取珍珠并黄连纳其中，良久汁出，取以注目中，多瘥。唐本注云∶《别录》
云，壳，疗尸疰，心腹痛；又主失精。水渍饮汁，止渴。今按∶陈藏器本草云∶田中螺
，煮食之，利大小便，去腹中结热，目下黄，香港脚冲上，小腹急硬，小便赤涩，脚手浮肿。
生浸取汁饮之，止消渴，碎其肉，敷热疮。烂壳烧为灰末服，主反胃。臣禹锡等谨按蜀本图
经云
∶生水田中，大如桃、李，状类蜗牛而尖长，青黄色，夏秋采之。药性论云∶田螺汁，亦可
单
用。主治肝热，目赤肿痛。取大者七枚，洗净，新汲水养去秽泥，重换水一升浸洗，仍旋取
于干净器中，着少盐花于口上，承取自出者，用点目。逐个如此用了，却放之。日华子云∶
田螺，冷，无毒。治手足肿及热疮，生研汁敷之。
陈藏器云在水田中，圆大者是。小小泥有棱名KT 螺，亦止渴，不能下水。食之当先
米泔浸
去泥，此物至难死，有误泥在壁中，三十年犹活，能伏气饮露唯生，穿散而出即死。烂壳烧
为
灰末服，主反胃，胃冷，去卒心痛。食疗云大寒。汁饮疗热、醒酒、压丹石。不可常食。圣
惠方治连月饮酒咽喉烂，舌上生疮。水中螺、蚌肉、葱、豉、椒、姜煮，饮汁三、两盏，瘥
。食医心镜主消渴，饮水日夜不止，口干，小便数。田中螺五升，水一斗，浸经宿，渴即饮
之。每日一度易水换生螺为妙。又方云∶以水三升煮，取汁，渴即饮之，螺即任吃。
【性味】大寒。
【主治】主要治疗眼睛红肿热痛，具有止渴功效。
陶弘景说：田螺生长在水田中以及湖泊沟渠的岸边，形状圆润硕大，像梨或橘子大小的，人们也会煮熟食用。将其煮取汁液，也能治疗热证，解酒醒神，止渴。患有眼痛的人，取珍珠和黄连放入螺壳内，过一段时间后汁液渗出，取此汁滴入眼中，多数能痊愈。《新修本草》注解说：《名医别录》记载，螺壳可治疗尸疰（一种慢性消耗性疾病），心腹疼痛；又主治遗精。用水浸泡后饮用汁液，可止渴。
如今考证：陈藏器在《本草拾遗》中说：田螺，煮熟食用，能通利大小便，清除腹中积热，消除眼下发黄，缓解脚气病向上冲逆引起的症状，小腹急迫坚硬，小便赤红涩痛，手脚浮肿。将活螺浸水取汁饮用，可治疗消渴症；将螺肉捣碎，外敷于热疮处。将烂壳烧成灰末服用，主治反胃。
臣禹锡等人谨按《蜀本图经》记载：田螺生长在水田中，大小如桃、李，形状类似蜗牛但更尖长，呈青黄色，夏秋两季采集。《药性论》说：田螺汁也可以单独使用。主治肝热引起的目赤肿痛。取大螺七枚，洗净，用新汲水饲养以去除污秽泥土，再换一升清水浸泡，随即置于干净的容器中，在螺口处撒少许盐花，承接其自行渗出的汁液，用来点眼。逐个这样处理后，再将它们放回水中。
日华子说：田螺性冷，无毒。治疗手足肿胀及热疮，生研取汁外敷。
陈藏器说：生长在水田中，圆润硕大的才是真品。体型小且有棱角的泥螺，也能止渴，但不能用于利水。食用前应当先用米泔水浸泡去除泥土。这种生物极难死亡，若有误吞泥沙藏在壁缝中，三十年后仍能存活。它依靠伏气和饮露才能生存，一旦穿散出来就会死亡。将烂壳烧成灰末服用，主治反胃、胃寒，去除突发性心痛。
《食疗本草》说：田螺大寒。其汁液饮用可治疗热证、解酒、压制丹石毒。不可经常食用。
《圣惠方》治疗连续数月饮酒导致咽喉溃烂、舌上生疮。用水煮螺肉、蚌肉、葱、豆豉、花椒、生姜，饮用汁液三到两盏，即可痊愈。
《食医心镜》主治消渴症，日夜饮水不止，口干，小便频数。取田螺五升，水一斗，浸泡过夜，口渴时饮用。每天更换一次水和生螺为妙。又有方剂说：用三升水煮，取汁，口渴时饮用，螺肉任人食用。
[Properties and Flavor] Greatly cold.
[Indications] Primarily treats redness, swelling, heat, and pain of the eyes; has the effect of quenching thirst.
Tao Hongjing stated: The *Cipangopaludina chinensis* (Field Snail) grows in paddy fields and along the banks of lakes and ditches. Those that are round and large, resembling pears or oranges, are also boiled and eaten by people. Boiling them to extract the juice can also treat heat syndromes, alleviate alcohol intoxication, and quench thirst. For those suffering from eye pain, place pearl powder (*Zhenzhu*) and Coptis Rhizome (*Huanglian*) inside the shell. After a while, juice exudes; collect this juice and instill it into the eyes, which often leads to recovery. The annotation in *Xinxiu Bencao* states: *Bencao Jing Jiazhu* records that the shell treats *Shizhu* (a chronic wasting disease characterized by transmission and consumption), epigastric and abdominal pain; it also treats seminal emission. Soaking in water and drinking the juice quenches thirst.
Current examination: Chen Cangqi in *Bencao Shiyi* states: Field snails, when boiled and eaten, promote urination and defecation, clear accumulated heat from the abdomen, resolve yellowing under the eyes, relieve symptoms where *Jiaogong* (foot qi) rushes upward, alleviate urgency and hardness of the lower abdomen, and address red, scanty, and difficult urination as well as edema of the hands and feet. Soaking live snails in water to extract and drink the juice treats *Xiaoke* (wasting-thirst syndrome); crushing the meat and applying it externally treats hot sores. Burning the decayed shell into ash and taking it orally treats regurgitation (*Fanwei*).
Min Yuxi and others, according to *Shuben Tujing*, recorded: Field snails grow in paddy fields, are as large as peaches or plums, resemble snails but are sharper and longer, and are greenish-yellow in color; they are harvested in summer and autumn. *Yaoxing Lun* states: Field snail juice can also be used alone. It treats liver heat causing redness, swelling, and pain of the eyes. Take seven large snails, wash them clean, raise them in fresh drawn water to remove mud and impurities, then soak them in one sheng of changed water. Immediately place them in a clean vessel, sprinkle a little salt flower on their openings to receive the self-exuded juice, and use it to instill into the eyes. Process each one similarly, then release them back.
Ri Huazi stated: Field snails are cold in nature and non-toxic. They treat swelling of the hands and feet and hot sores; grind raw and apply the juice externally.
Chen Cangqi stated: Those growing in water fields that are round and large are the correct variety. Small mud snails with ridges, named *KT* snails, can also quench thirst but cannot promote water metabolism. Before eating, they must first be soaked in rice washing water to remove mud. This creature is extremely difficult to kill; if mud gets trapped in its wall crevices, it may survive for thirty years. It survives only by absorbing latent qi and drinking dew; once broken open and scattered, it dies. Burning the decayed shell into ash and taking it orally treats regurgitation, cold stomach, and sudden heart pain.
*Shiliao Bencao* states: Field snails are greatly cold. Drinking the juice treats heat, alleviates alcohol intoxication, and suppresses the toxicity of mineral pills (*Danshi*). It should not be consumed frequently.
*Shenghui Fang* treats throat ulceration and tongue sores caused by continuous months of alcohol consumption. Boil snail meat, clam meat, scallion, fermented soybeans, Sichuan pepper, and ginger in water; drink three to two cups of the juice for recovery.
*Shiyi Xinjing* treats *Xiaoke* (wasting-thirst syndrome) characterized by incessant day and night drinking, dry mouth, and frequent urination. Take five sheng of field snails and one dou of water, soak overnight, and drink when thirsty. It is best to change the water and use fresh snails daily. Another prescription states: Boil with three sheng of water, take the juice, and drink when thirsty; the snail meat may be eaten freely.