病在胸膈以上者，先食后服药；病在心腹以下者，先服药而后食；病在四肢血脉及下部，宜
空腹而在旦；病在头目骨髓，宜饱满而在夜。虽食前食后，亦停少顷，然后服药。食不宜与药并
行，则药力稍为混滞故也。《汤液》云∶药气与食气不欲相逢，食气稍消则服药，药气稍消则进
食。所谓食先食后，盖有义在其中也。又有酒服者、饮服者、冷服者、暖服者。服汤有疏有数者，
煮汤有生有熟者，各有次第，并宜详审而勿略焉。
清热汤宜凉服，如三黄汤之类；消暑药宜冷服，如香薷饮之类；散寒药宜热服，如麻黄汤之
类；温中药宜熟而热，补中药皆然；利下药宜生而温，如承气汤之类。
病在上者，不厌频而少；病在下者，不厌顿而多。少服则滋荣于上，多服则峻补于下。
凡云分再服三服者，要令势力相及，并视人之强弱、羸瘦，病之轻重为之进退增减，不必局
于方说，则活泼泼地也。云 时，周时也，从今旦至明旦，亦有止一宿者。
服柴胡忌牛肉。服茯苓忌醋。服黄连、桔梗忌猪肉。服乳石忌参术，犯者死。服丹石不可食
蛤蜊，腹中结痛。大黄、巴豆同服，反不泻人。服皂矾忌荞麦面。服半夏、菖蒲忌饴糖、羊肉。
服白术、苍术忌雀肉、胡荽、大蒜。服天门冬忌鲤鱼。服牡丹皮忌胡荽。服常山忌葱。服鳖中忌
苋菜。服商陆忌犬肉。服地黄忌萝卜。服细辛忌生菜。服甘草忌菘菜。服粟壳忌醋。服芫花、甘
遂忌盐忌甘草。服荆芥忌驴肉、黄颡鱼。服柿蒂忌蟹，犯者木香汤能解。服巴豆忌芦笋。服诸药
未消化，不可食河肫鱼，食鱼后服药者，口鼻流血而死。（《医说》）。服藜芦忌狐狸肉。服蜜及蜜
煎果忌 。疮毒未愈不可食生姜、鸡子，犯之则肉长突出作块而白。
疾病位于胸膈以上的，先吃饭后服药；疾病位于心腹以下的，先服药后吃饭；疾病在四肢血脉及身体下部，宜空腹并在早晨服用；疾病在头目骨髓，宜吃饱并在晚上服用。无论是饭前还是饭后服药，也要稍作停顿，然后再服药。食物不宜与药物同时服用，因为这样会使药力稍微混浊停滞。《汤液经》说：药气与食气不希望相遇，待食气稍消后再服药，待药气稍消后再进食。所谓饭前或饭后服药，其中蕴含着深意。又有用酒送服、用水送服、冷服、温服的区别。服用汤剂有疏缓与频密的分别，煎煮汤剂有生药与熟药的不同，各有次序，都应当详细审察而不可忽略。
清热汤宜凉服，如三黄汤之类；消暑药宜冷服，如香薷饮之类；散寒药宜热服，如麻黄汤之类；温中药宜煮熟且热服，补中药都是如此；利下药宜生用且温服，如承气汤之类。
病在上部的，不厌其烦地少量多次服用；病在下部的，不嫌一次性大量顿服。少量服用则滋养上部，大量服用则峻补下部。
凡是说分两次或三次服用的，要使药力衔接得上，并视病人的强弱、瘦弱程度，以及病情的轻重来灵活进退增减，不必拘泥于方书的说法，这样才能活泼灵动。所谓“一昼夜”，是指整整一天一夜的时间，从今早到明早，也有仅指过一夜的情况。
服用柴胡时忌吃牛肉。服用茯苓时忌吃醋。服用黄连、桔梗时忌吃猪肉。服用乳石时忌用人参、白术，违反者会死亡。服用丹石类药物不可吃蛤蜊，否则腹中结痛。大黄、巴豆同服，反而不能使人泻下。服用皂矾时忌吃荞麦面。服用半夏、菖蒲时忌吃饴糖、羊肉。服用白术、苍术时忌吃雀肉、胡荽（香菜）、大蒜。服用天门冬时忌吃鲤鱼。服用牡丹皮时忌吃胡荽。服用常山时忌吃葱。服用鳖肉时忌吃苋菜。服用商陆时忌吃犬肉。服用地黄时忌吃萝卜。服用细辛时忌吃生菜。服用甘草时忌吃菘菜（白菜）。服用粟壳时忌吃醋。服用芫花、甘遂时忌盐、忌甘草。服用荆芥时忌吃驴肉、黄颡鱼。服用柿蒂时忌吃蟹，违反者可用木香汤解救。服用巴豆时忌吃芦笋。服用各种药物尚未消化时，不可吃河豚鱼，若吃完鱼后再服药，会导致口鼻流血而死。（出自《医说》）。服用藜芦时忌吃狐狸肉。服用蜂蜜及蜜煎果实时忌吃醋。疮毒未愈时不可吃生姜、鸡蛋，违反者会导致肌肉生长突出成块且发白。
If the disease is located above the chest and diaphragm, take food first and then medicine; if the disease is located below the heart and abdomen, take medicine first and then food; if the disease is in the four limbs, blood vessels, or the lower part of the body, it is advisable to take it on an empty stomach in the morning; if the disease is in the head, eyes, or bone marrow, it is advisable to take it when full at night. Whether taken before or after meals, one should pause for a moment before taking the medicine. Food should not be taken simultaneously with medicine, as this causes the medicinal power to become slightly turbid and stagnant. The *Tangye* (Classic of Decoctions) states: "The qi of medicine and the qi of food do not wish to meet; take medicine when the food qi has slightly dissipated, and take food when the medicine qi has slightly dissipated." The concepts of taking medicine before or after meals contain profound meaning. There are also distinctions between administration with wine, water, cold temperature, and warm temperature. The administration of decoctions varies in frequency (sparse vs. frequent), and the decoction process varies by using raw or cooked ingredients; each has its sequence and must be carefully examined without neglect.
Clearing-heat decoctions should be taken cool, such as Sanhuang Tang (Three-Yellow Decoction); summer-heat dispelling medicines should be taken cold, such as Xiangru Yin (Elsholtzia Drink); cold-dispersing medicines should be taken hot, such as Mahuang Tang (Ephedra Decoction); middle-warming medicines should be thoroughly cooked and taken hot, and all tonifying-middle medicines follow this rule; purgative-lowering medicines should be used raw and taken warm, such as Chengqi Tang (Order the Qi Decoction).
For diseases in the upper part, do not disdain frequent but small doses; for diseases in the lower part, do not disdain single large doses. Small doses nourish the upper part; large doses strongly tonify the lower part.
When it is stated to divide into two or three doses, ensure the medicinal force connects continuously, and adjust based on the patient's strength or emaciation, and the severity of the illness, rather than being rigidly bound by the prescription instructions, thus allowing flexibility. "One zhou" (周时) refers to a full cycle of time, from today's dawn to tomorrow's dawn, though sometimes it may refer only to passing through one night.
When taking Chaihu (Bupleuri Radix), avoid beef. When taking Fuling (Poria), avoid vinegar. When taking Huanglian (Coptidis Rhizoma) and Jiegeng (Platycodonis Radix), avoid pork. When taking Rushi (Mineral Drugs), avoid Renshen (Ginseng Radix et Rhizoma) and Baizhu (Atractylodis Macrocephalae Rhizoma); violation leads to death. When taking Danshi (Cinnabar/Realgar preparations), avoid clams, which cause abdominal knotting pain. Taking Dahuang (Rhei Radix et Rhizoma) and Badou (Crotonis Fructus) together results in failure to induce purgation. When taking Zaojian (Vitriol), avoid buckwheat noodles. When taking Banxia (Pinelliae Rhizoma) and Changpu (Acori Tatarinowii Rhizoma), avoid Yitang (Maltose) and mutton. When taking Baizhu (Atractylodis Macrocephalae Rhizoma) and Cangzhu (Atractylodis Rhizoma), avoid sparrow meat, Huyu (Coriander), and garlic. When taking Tianmendong (Asparagi Radix), avoid carp. When taking Mudanpi (Moutan Cortex), avoid Huyu (Coriander). When taking Changshan (Dichroae Radix), avoid scallions. When eating soft-shelled turtle, avoid amaranth. When taking Shanglu (Phytolaccae Radix), avoid dog meat. When taking Dihuang (Rehmanniae Radix), avoid radishes. When taking Xixin (Asari Radix et Rhizoma), avoid raw vegetables. When taking Gancao (Glycyrrhizae Radix et Rhizoma), avoid Songcai (Chinese Cabbage). When taking Suske (Poppy Capsule), avoid vinegar. When taking Yuanhua (Genkwa Flos) and Gansui (Euphorbiae Kansui Radix), avoid salt and Gancao (Glycyrrhizae Radix et Rhizoma). When taking Jingjie (Schizonepetae Herba), avoid donkey meat and yellow catfish. When taking Shidi (Kaki Calyx), avoid crabs; violation can be resolved with Muxiang Tang (Aucklandia Decoction). When taking Badou (Crotonis Fructus), avoid reed shoots. If various medicines have not yet digested, do not eat pufferfish; taking medicine after eating fish leads to bleeding from the mouth and nose (from *Yi Shuo*). When taking Lilu (Veratrum), avoid fox meat. When taking honey and honey-cooked fruits, avoid vinegar. If sores/toxins are not healed, avoid ginger and eggs; violation causes flesh to grow protruding into lumps and turn white.