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。
[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.