Use of Gan Jiang (dried ginger) in TCM
Please note that you should never self-prescribe TCM ingredients. A TCM ingredient is almost never eaten on its own but as part of a formula containing several ingredients that act together. Please consult a professional TCM practitioner, they will be best able to guide you.
Preparation: Remove impurities, wash and soak in water to moisten, cut in thick pieces and dry
Dosage: 3 - 9 grams
Main actions according to TCM*: Warms the Spleen and expels Cold. Restores collapse of Yang and expels Interior Cold. Warms the Lungs and assists expectoration of Cold Phlegm. Stops chronic bleeding caused by Cold.
Primary conditions or symptoms for which Gan Jiang may be prescribed by TCM doctors*: Abdominal pain Phlegm Vomiting Dyspnea Coughing Diarrhea Asthma Abnormal uterine bleeding
Contraindications*: This herb should not be used by those with Yin Deficiency and Heat signs or bleeding associated with Hot Blood. This herb should be used with extreme caution during pregnancy. May enhance risk of bleeding when ginger is used together with the blood thinning drug Warfarin
Common TCM formulas in which Gan Jiang is used*
Ling Gan Wu Wei Jiang Xin Tang
Source date: 220 AD
Number of ingredients: 5 herbs
Formula key actions: Warms the Lungs. Transforms congested Fluids.
Conditions targeted*: Chronic bronchitisChronic asthma and others
Gan Jiang is a king ingredient in Ling Gan Wu Wei Jiang Xin Tang. Like the name indicates, it means it has more power than other ingredients in the formula.
In Ling Gan Wu Wei Jiang Xin Tang, Gan Jiang warms the Lungs, disperses Cold, and transforms thin mucus. It also warms the Spleen Yang to eliminate Dampness.
Li Zhong Wan
Source date: 220 AD
Number of ingredients: 4 herbs
Formula key actions: Warms the Middle Burner. Strengthens the Spleen and Stomach.
Conditions targeted*: GastroenteritisPeptic ulcers and others
Gan Jiang is a king ingredient in Li Zhong Wan. Like the name indicates, it means it has more power than other ingredients in the formula.
In Li Zhong Wan, Gan Jiang warms the Spleen and Stomach Yang and eliminates Interior Cold, the primary function of this formula.
Gan Cao Gan Jiang Tang
Source date: 220 AD
Number of ingredients: 2 herbs
Formula key actions: Warms the Lungs. Strengthens the Stomach.
Conditions targeted*: EnuresisExcessive drooling and others
Gan Jiang is a king ingredient in Gan Cao Gan Jiang Tang. Like the name indicates, it means it has more power than other ingredients in the formula.
In Gan Cao Gan Jiang Tang, Gan Jiang warms the Lungs and disperses Cold. Its primary function is to restore the Yang in chest. However, its acrid and hot nature can hurt the Lungs by depleting the source Qi. To overcome this problem, blast fried Ginger is recommended as its acrid and dispersing effect is reduced.
Key TCM concepts behind Gan Jiang's properties
In Traditional Chinese Medicine (TCM), Gan Jiang belongs to the 'Herbs that warm the Interior and/or expel Cold' category. Herbs in this category are used for Internal Cold with Qi Deficiency and/or Yang Deficiency. In the Yin and Yang system of thought Yang is Hot in nature. A deficiency of Yang will therefore lead to Internal Coldness since there will as a result be more Yin (Cold in nature) than Yang. In extreme cases this can lead to so-called 'Yang collapse' with convulsions or coma and these herbs are particularly indicated to treat such scenarios.
As suggested by its category Gan Jiang is Hot in nature. This means that Gan Jiang typically helps people who have too much "Cold" in their body. Balance between Yin and Yang is a key health concept in TCM. Those who have too much 'Cold' in their body are said to either have a Yin Excess (because Yin is Cold in nature) or a Yang Deficiency (Yang is Hot in Nature). Depending on your condition Gan Jiang can help restore a harmonious balance between Yin and Yang.
Gan Jiang also tastes Pungent. The so-called 'Five Phases' theory in Chinese Medicine states that the taste of TCM ingredients is a key determinant of their action in the body. Pungent ingredients like Gan Jiang tends to promote the circulations of Qi and Body Fluids. That's why for instance someone tends to sweat a lot when they eat spicy/pungent food.
The tastes of ingredients in TCM also determine what Organs and Meridians they target. As such Gan Jiang is thought to target the Heart, the Kidney, the Lung and the Stomach. In addition to regulating Blood flow, in TCM the Heart is believed to be the store of the 'Mind' which basically refers to someone's vitality. The Kidneys do not only regulate the urinary system but also play a key role in the reproductive system and the growth and aging process of the body. In addition to performing respiration, the Lungs are thought in TCM to be a key part of the production chain for Qi and the Body Fluids that nourish the body. The Stomach is responsible for receiving and ripening ingested food and fluids. It is also tasked with descending the digested elements downwards to the Small Intestine.
Research on Gan Jiang
3 months supplementation of ginger improved glycemic indices and total antioxidant capacity in patients with type 2 diabetes.1
Treatment of primary dysmenorrhea in students with ginger for 5 days had a statistically significant effect on relieving intensity and duration of pain.2
Ginger powder has add-on effect on reducing the symptoms of osteoarthritis of knee with acceptable safety profile.3
Ginger supplementation at a daily dose of 0.5 g-1.0 g significantly aids in reduction of the severity of acute chemotherapy-induced nausea in adult cancer patients.4
Ginger can be considered as a useful treatment option for women suffering from morning sickness.5
Sources:
1. Shidfar F, Rajab A, Rahideh T, Khandouzi N, Hosseini S, Shidfar S. ( 2015). The effect of ginger (Zingiber officinale) on glycemic markers in patients with type 2 diabetes. J Complement Integr Med. , 12(2):165-70. doi: 10.1515/jcim-2014-0021.
2. Rahnama P, Montazeri A, Huseini HF, Kianbakht S, Naseri M. ( 2012 ). Effect of Zingiber officinale R. rhizomes (ginger) on pain relief in primary dysmenorrhea: a placebo randomized trial. BMC Complement Altern Med. , 12:92. doi: 10.1186/1472-6882-12-92.
3. Paramdeep G. (2013). Efficacy and tolerability of ginger (Zingiber officinale) in patients of osteoarthritis of knee. Indian J Physiol Pharmacol. , 57(2):177-83.
4. Ryan JL, Heckler CE, Roscoe JA, Dakhil SR, Kirshner J, Flynn PJ, Hickok JT, Morrow GR. (2012). Ginger (Zingiber officinale) reduces acute chemotherapy-induced nausea: a URCC CCOP study of 576 patients. Support Care Cancer. , 20(7):1479-89. doi: 10.1007/s00520-011-1236-3. Epub 2011 Aug 5.
5. Willetts KE, Ekangaki A, Eden JA. (2003). Effect of a ginger extract on pregnancy-induced nausea: a randomised controlled trial. Aust N Z J Obstet Gynaecol. 43(2):139-44.
Use of Gan Jiang as food
Gan Jiang is also eaten as food. It is used as an ingredient in dishes such as Candied ginger or Gingerbread.