Chinese herbal medicine for pancreatic cancer
What is it?
Chinese herbal medicine is part of traditional Chinese medicine (TCM), a 3,000-year-old holistic system of medicine combining medicinal herbs, acupuncture, food therapy, massage, and therapeutic exercise for both treatment and prevention of diseases 1.
TCM has its unique theories around concepts of aetiology, systems of diagnosis, and treatment, which are vital to its practice. The theories of TCM include Yin-Yang (e.g. positive and negative), the five elements (fire, earth, metal, water, and wood), Qi (vital energy) and blood, Zhang-Fu (five viscerae and six bowels), as well as channels and collaterals (Meridian doctrine) 2,3. Diseases are considered to result from internal causes as well as external causes, which are defined as disturbances e.g., the imbalance between Yin and Yang. Chinese medicines consist typically of complex prescriptions combining between four and 12 different herbal ingredients, including minerals or animal components. The combinations are based on special Chinese diagnostic patterns that involve inspection, listening, smelling, inquiry, and palpation.
Herbal therapy is the most commonly used part of TCM, and includes around 3,200 herbs. Herbs often used by cancer patients include Ginkgo biloba, Panax ginseng, and Astragalus membranaceus. About 300 mineral and animal extracts and over 400 formulas are used 2.
Application and dosage
TCM herbal therapy is applied in three different ways, including individualised treatment (prescription of herbs on the basis of a TCM differentiation of the symptoms), use of fixed herbal formulae (such as Chinese patented medicines), or the combined use of herbal medicine with conventional therapy. The composition of herbal preparations, dosage, and treatment duration vary.
TCM practitioners can either prescribe herbal formulae as decoctions, or prescribe commercially marketed herbal products such as Chinese patented medicines. Chinese patented medicines are manufactured mainly in China, while other neighbouring countries such as Japan, Korea, also produce herbal products.
Claims of efficacy/alleged indications/mechanism of action
According to TCM principles, herbs are used for correcting the imbalance of Yin and Yang in the body and maintaining kinetic balance under the movement of five elements. “Bianzheng Lunzhi” (the differentiation of symptom patterns and the prescription of formula of herbs) is the application of these theories.
In TCM, there is no equivalent diagnosis for pancreatic cancer, but the treatment intends to relieve the symptoms related to pancreatic cancer. Herbal treatment is supposed to inhibit tumour growth and metastasis, stop pain and improve symptoms, reduce the adverse effects of chemotherapy and/or radiotherapy, enhance immunity, prevent relapse, increase survival, and improve quality of life. In line with TCM theory, practitioners prescribe herbal formulae according to the differentiation of symptoms of patients with pancreatic cancer 4. Therefore, the treatment varies from patient to patient and even at different stages of the disease.
Prevalence of use
Traditional Chinese herbal medicine has been used in China to manage the symptoms of patients with pancreatic cancer, such as jaundice, pain, and low appetite. There is no available data for the prevalence of herbal medicine use in pancreatic cancer patients. However, in China, it is not uncommon for patients with advanced pancreatic cancer to use herbal preparations and other TCM therapies.
In most European countries, herbal medicines are strictly regulated as dietary supplements. The European Directive on Traditional Herbal Medicinal Products allows herbal medicines to be registered as drugs if they have been used for 30 years (at least 15 years in EU countries and 15 years in non-EU countries) 5.
The cost of herbal medicine for patients with advanced pancreatic cancer can vary substantially. For herbal decoction only, it might take around 1,000 RMB (€120 or US$160) per month, and proprietary herbal products cost more, approximately, oral proprietary herbal medicine cost 2,000-3,000 RMB (€240-360 or US$320-480), and intravenous herbal injection costs an extra 4,000-8,000 RMB (€480-960 or US$640-1280) per month.
CitationJianping Liu, Xun Li, CAM-Cancer Consortium. Chinese herbal medicine for pancreatic cancer [online document]. http://www.cam-cancer.org/CAM-Summaries/Herbal-products/Chinese-herbal-medicine-for-pancreatic-cancer. May 8, 2012.
Most recent update and revision in April 2012 by Jianping Liu and Xun Li.
Fully revised and updated in July 2009 by Jianping Liu and Xun Li.
Summary first published in November 2005, authored by Jianping Liu.
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