Gan Jiang Root (Zingiber officinale siccum): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Gan Jiang (dried ginger) work in the body?

Gan Jiang contains active compounds including shogaols, gingerols, paradols, and zingerone that exert warming and anti-inflammatory effects. Shogaols, which increase during the drying process, are more pungent and thermogenic than the gingerols found in fresh ginger. These compounds stimulate circulation, enhance gastric motility, and activate TRPV1 receptors, producing a characteristic warming sensation. In Traditional Chinese Medicine, this mechanism translates to warming the interior, expelling cold, and rescuing devastated yang. Evidence level: C.

Does dried ginger interact with medications?

Gan Jiang may interact with anticoagulant and antiplatelet medications due to its potential effects on blood clotting. Caution is advised when taking warfarin, aspirin, clopidogrel, or other blood-thinning medications, as concurrent use may increase bleeding risk. Dried ginger may also enhance the effects of antidiabetic medications by lowering blood glucose levels. Additionally, it can affect the absorption of certain drugs by altering gastric motility. Patients taking prescription medications should consult a qualified healthcare provider before using Gan Jiang therapeutically. Evidence level: C.

What is the recommended dosage for Gan Jiang?

The standard adult dosage for Gan Jiang is 3-9 grams of dried root per day, typically administered as a decoction or powder. Lower doses around 3 grams are used for mild digestive warming, while higher doses up to 9 grams may be used for more severe cold conditions under professional supervision. The dried root should be distinguished from fresh ginger, which has different therapeutic properties and dosing requirements. Always follow the guidance of a qualified herbalist or healthcare practitioner for individualized dosing. Evidence level: Traditional.

Is Gan Jiang safe to take during pregnancy?

Gan Jiang is generally considered unsafe during pregnancy when used in therapeutic doses. While small culinary amounts of ginger may be acceptable, the concentrated warming properties of dried ginger can stimulate uterine contractions and may pose risks during pregnancy. Traditional Chinese Medicine classifies Gan Jiang as contraindicated or requiring strong caution during pregnancy, particularly at higher doses. Pregnant individuals should avoid medicinal use of Gan Jiang and consult a qualified healthcare provider before using any herbal preparations. Evidence level: Traditional.

What is the difference between fresh ginger and dried ginger in TCM?

Fresh ginger (Sheng Jiang) and dried ginger (Gan Jiang) have distinct therapeutic properties in Traditional Chinese Medicine. Fresh ginger releases the exterior, treats colds, and stops vomiting with a more dispersing action. Dried ginger is significantly warmer and is used to warm the interior, expel cold from the spleen and stomach, and rescue devastated yang in collapse conditions. The drying process converts gingerols to shogaols, creating a more concentrated warming effect. Choose fresh ginger for exterior conditions and dried ginger for interior cold patterns. Evidence level: Traditional.

What are the side effects of Gan Jiang?

Gan Jiang may cause gastrointestinal heat symptoms in individuals with excess heat conditions, including heartburn, dry mouth, and constipation. Because of its warming nature, it can aggravate existing heat patterns in the body. Other potential side effects include mild gastric irritation and, in sensitive individuals, skin reactions. Gan Jiang is contraindicated in conditions involving internal heat, yin deficiency with empty heat, and peptic ulcers when used in excess. Discontinue use if adverse symptoms develop and consult a healthcare provider. Evidence level: Traditional.

Fiche d'information compilée à partir de PubMed

Cette fiche a été compilée à partir de résumés PubMed (NIH) avec l'assistance d'une IA. Chaque affirmation factuelle est citée par un article PubMed réel (voir la liste des sources). Elle n'a pas encore été révisée par un humain — confirmez auprès d'un professionnel de santé avant utilisation.

Compilé à partir de 29 articles PubMed · modèle : gemma4:31b

Résumé

Gan Jiang Root (dried ginger) is a traditional medicinal herb used for gastrointestinal disorders, nausea, and inflammatory conditions [PMID:35729087, 40074099]. It is characterized by a high concentration of shogaols, which are formed from gingerols during the drying process [PMID:26228533, 39007134].

Contexte

Gan Jiang (Zingiberis Rhizoma) is the dried form of the rhizome of Zingiber officinale Roscoe [PMID:35729087]. It is distinguished from fresh ginger (Sheng Jiang) by its cultivation, appearance, functions, and chemical composition [PMID:35729087].

Usages traditionnels

Traditionally used to treat gastrointestinal disorders [PMID:35729087], nausea, vomiting, diarrhea, inflammation [PMID:40074099], and respiratory diseases such as asthma and cholera [PMID:40759861]. It is also used in combination with other Chinese medicines to treat virus-induced pneumonia [PMID:37837898].

Composés actifs

The major bioactive phenolic compounds in dried ginger are shogaols (specifically 6-shogaol), which are produced via the dehydration of gingerols [PMID:26228533, 29417118, 34203813]. Other constituents include zingerone, paradols [PMID:39007134], and hexahydrocurcumin (HHC) [PMID:37837898].

Mécanisme d'action

6-shogaol acts as a Michael acceptor that reacts with nucleophiles, inhibiting inflammatory mediators such as COX-2 and iNOS, and affecting NF-κB and MAPK signaling [PMID:34203813]. Hexahydrocurcumin (HHC) binds to the JAK1 protein to suppress inflammatory cytokines like IL-6 and TNF-α [PMID:37837898]. Zingerone modulates p53 and regulates Sat1 and Gpx4 expression to enhance ferroptosis sensitivity in osteoclast precursors [PMID:41006700].

Preuves cliniques

Preuve CNausea and Motion Sickness

Dried powdered ginger rhizome is recognized for the prevention of nausea and vomiting in motion sickness [PMID:34203813].

Preuve ALactation/Milk Supply

A systematic review of 5 studies found weak evidence that ginger may increase milk supply in mothers who had a natural delivery, but not those who had a cesarean section [PMID:30000845].

Preuve DAcute Pneumonia (Animal Model)

Hexahydrocurcumin from Gan Jiang alleviated lung injury, ROS, and IL-6 production in LPS-induced pneumonia mice [PMID:37837898].

Preuve DPostmenopausal Osteoporosis (Animal Model)

Zingerone significantly improved bone mass in an ovariectomised mouse model [PMID:41006700].

Preuve DUlcerative Colitis (Animal Model)

Dried ginger and processed ginger both demonstrated significant therapeutic effects on UC mice [PMID:41719786].

Preuve DNonalcoholic Steatohepatitis (Animal Model)

Grossesse et allaitement

Reportedly used as a galactogogue in Türkiye, Indonesia, and parts of Asia, though some cultures believe it decreases milk supply [PMID:30000845].

Synthèse des preuves

The evidence consists primarily of in vitro and in vivo animal studies (Level D) and reviews (Level C), with one systematic review (Level A) regarding lactation showing weak evidence. Most pharmacological claims are based on animal models or chemical analysis.

Sources PubMed

1.PMID: 26228533 (2015) — Gingerols and shogaols: Important nutraceutical principles from ginger. · Phytochemistry
2.PMID: 30000845 (2006) — Study on the mechanism of modified Gegen Qinlian decoction in regulating the intestinal flora-bile acid-TGR5 axis for the treatment of type 2 diabetes mellitus based on macro genome sequencing and targeted metabonomics integration. · Phytomedicine : international journal of phytotherapy and phytopharmacology
3.PMID: 36613394 (2023) — Antioxidant Properties of Dried Ginger (Zingiber officinale Roscoe) var. Bentong. · Foods (Basel, Switzerland)
4.PMID: 37837898 (2024) — Hexahydrocurcumin from Zingiberis rhizoma attenuates lipopolysaccharide-induced acute pneumonia through JAK1/STAT3 signaling pathway. · Phytomedicine : international journal of phytotherapy and phytopharmacology
5.PMID: 35729087 (2022)

Gan Jiang Root

Sources et citations

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