25,729 articles
Yang Chai
Yang Chai is a craniofacial scientist and dean of the Herman Ostrow School of Dentistry at the University of Southern California, elected to the National Academy of Medicine in 2018.
Yanghe Decoction
阳和汤 (Yanghe Decoction), a classic Chinese medicine formula from Wang Weide's 1740 Waike Zhengzhi Quansheng Ji, treats yin abscesses of yang-deficiency cold-coagulation pattern; seven herbs, now used across many specialties.
Yangjing Zhongyu Tang
养精种玉汤 (Yangjing Zhongyu Tang), a four-herb TCM infertility formula from Fu Shan's Fuchu Zhunüke: prepared rehmannia, angelica, white peony, cornelian cherry for thin-body, kidney-yin-deficiency infertility; distinct from Kaiyu Zhongyu Tang.
Yangweitang
养胃汤 (Yangweitang), classical Chinese medicine decoction first recorded in the Song dynasty Jufang as Renshen Yangweitang; spawned variants Xiangsha Yangweitang, Chonghe Yangweitang, and Ye Tianshi's yin-nourishing version.
Yangxue Qufeng Zhitong granules
Yangxue Qufeng Zhitong granules (养血祛风止痛颗粒) is a traditional Chinese medicine approved in China in June 2025 as the first innovative TCM for frequent episodic tension-type headache.
Yaowu Jinghua
药物精华 (essence of materia medica): the distilled drug knowledge of the Chinese bencao tradition, from the Shennong Bencao Jing (Eastern Han) through Zheng Lei Bencao, Bencao Pinhui Jingyao, and Bencao Gangmu (1593, 1,892 drugs) to modern digital databases and pharmacodynamic research.
Yapanalai
雅帕纳来 (ᩀᩣ ᨽᩣ ᩃᩣ ᩭ) is a Dai-medicine pill formula, entry 9 in China's second ancient classic formula catalog, from 《档哈雅龙》 with over 1,500 years of stated use; two ingredients, 卵叶巴豆根 and 黑种草子, taken 3–6 pills three times daily.
Yasada bhasma
Yasada bhasma (Yashad/Jasada bhasma), an Ayurvedic zinc calx made by shodhana, jarana, and marana puta cycles; studies report ZnO or ZnS nanoparticles, antidiabetic use, and safety data.
Yastimadhuka taila
Yastimadhuka taila (Yaṣṭimadhuka taila) is an Ayurvedic medicated sesame oil cooked with liquorice root, cow milk, and amla juice, used externally for Abhyanga, hair and scalp care, and studied for pain, fissure, and stress.
Yava Ksara
Yava Kṣāra (yava kshara) is an official Ayurvedic alkaline preparation of barley (Hordeum vulgare) ash, sodium- and potassium-rich, pH 9-10, used for dysuria, abdominal disorders, and urinary stones.
Yawn
Yawn: involuntary wide mouth opening with deep inhalation and slow expiration, nearly universal in vertebrates. Functions debated: brain thermoregulation and arousal; contagious yawning shows familiarity bias and reduced susceptibility with psychopathic traits.
Yaws
Yaws (framboesia, pian) is a chronic childhood treponemal infection caused by Treponema pallidum subspecies pertenue, spread by skin contact, curable with single-dose azithromycin, and targeted for eradication; India is the only certified yaws-free country.
Yellow fever
Yellow fever is a mosquito-borne viral hemorrhagic disease of Africa and South America, spread by Aedes, Haemagogus, and Sabethes mosquitoes. The 17D vaccine (Theiler, 1936) gives lifelong protection with one dose; there is no specific treatment.
Yellow fever vaccine
The yellow fever vaccine, or yellow fever 17D, is a live attenuated vaccine developed by Max Theiler in 1937 that protects against yellow fever; one dose lasts a lifetime.
Yellow nail syndrome
Yellow nail syndrome (YNS) is a rare triad of slow-growing yellow dystrophic nails, lymphedema, and respiratory disease, first described by Samman and White in 1964; two of three features suffice for diagnosis, and treatment is symptomatic.
Yersinia pseudotuberculosis infection
Yersinia pseudotuberculosis infection (yersiniosis, pseudotuberculosis): zoonotic foodborne gastroenteritis with mesenteric lymphadenitis mimicking appendicitis; caused by the gram-negative ancestor of Yersinia pestis; complications include reactive arthritis and Far East scarlet-like fever.
Yersiniosis enterocolitica
Yersiniosis enterocolitica is the common name for infection with Yersinia enterocolitica, a Gram-negative foodborne bacterium from swine that causes yersiniosis, typically enterocolitis with diarrhea and fever.
YF Vax
YF-VAX (Yellow Fever Vaccine, Sanofi Pasteur) is the only FDA-licensed yellow fever vaccine in the United States: a live-attenuated 17D-204 vaccine, one 0.5 mL subcutaneous dose for ages 9 months and older, with Stamaril used during the 2015–2021 shortage.
Yi Huang Tang
易黄汤 (Yi Huang Tang, Yellow-Transforming Decoction) is a Qing-dynasty TCM formula from Fu Shan's Fu Qing Zhu Nu Ke for kidney-deficiency damp-heat vaginal discharge, composed of stir-fried Chinese yam, euryale seed, phellodendron, plantain seed, and ginkgo seed.
Yiguanjian
Yiguanjian (一贯煎, Linking Decoction), a classical Chinese medicine formula from Wei Zhixiu's Xu Mingyi Lei'an, six herbs nourishing yin and soothing the liver; granule form approved in China December 2023.
Yimitasvir phosphate
Yimitasvir phosphate (磷酸依米他韦, Dongwei'en) is an oral HCV NS5A inhibitor by Guangdong HEC, approved in China December 2020 with sofosbuvir for genotype 1 non-cirrhotic chronic hepatitis C, SVR12 99.5%, once-daily 0.1 g capsule.
Yin Yoga
Yin Yoga: slow, meditative yoga style holding passive floor poses 3-5+ minutes to stress fascia, ligaments, and joints rather than muscles. Developed from Paulie Zink's Daoist Yoga by Paul Grilley; Sarah Powers coined the name. Distinct from restorative yoga.
Yinchen Zhufu Tang
茵陈术附汤 (Yinchen Zhufu Decoction), a Qing-dynasty Chinese formula from Yixue Xinwu by Cheng Guopeng for yin jaundice from cold-damp; six warming herbs, decocted in water; listed among China's 2023 Ancient Classic Formulas.
Yinchenhao Tang
茵陈蒿汤 (Yinchenhao decoction), a three-herb classical Chinese formula from the Shanghan Lun (yinchen, gardenia, rhubarb) for damp-heat jaundice; studied in NAFLD, hepatitis B, and hepatic fibrosis; available as Japanese kampo granules.
Yinqiao Qingre tablets
Yinqiao Qingre tablets (银翘清热片), also known as Yinqiao Baidu tablets, are a Class 1.1 TCM innovative drug by Jiangsu Kanion approved in November 2021 for wind-heat type common cold, the first such approval under China's 2020 registration classification.
Yiqi Tongqiao pills
Yiqi Tongqiao pills (益气通窍丸, Qidan Bimin pills) is a Chinese Class 1.1 TCM new drug approved by the NMPA in September 2021 for seasonal allergic rhinitis of the lung–spleen qi deficiency pattern, a 14-herb formula from Yupingfeng powder and Guominjian, made by Yangtze River's Sichuan Hairong.
Yishen Yangxin Anshen tablets
Yishen Yangxin Anshen tablets (益肾养心安神片), also called Yishen Yangxin Anshen Pian, is a Yiling Pharmaceutical class 1.1 Chinese patent medicine for insomnia with heart-blood deficiency and kidney-essence insufficiency, approved in China in 2021 and reimbursed as a Class B negotiated drug.
Yiteng Jingang (亿腾景昂) (Etan Jingang)
Yiteng Jingang (亿腾景昂), also known as EOC Pharma, is a Chinese oncology drug development company based in Taizhou, China, best documented for a December 2019 Series C round of nearly RMB 500 million.
Yixue Xinwu
医学心悟 (Yixue Xinwu, Insight into Medicine), a five-juan 1732 Chinese medical classic by Qing physician Cheng Guopeng (程国彭, zi Zhongling), known for the eight therapeutic methods, eight-principle pattern identification, and formulas like Zhisou San.
Yixue Zhongzhong Canxi Lu
医学衷中参西录 (Yixue Zhongzhong Canxi Lu), Zhang Xichun's only surviving work, issued 1918–1934 in seven installments; a TCM classic advocating 'zhong zhong can xi', integrating Western medicine with Chinese medicine, with 176 formulas and 137 cases.