Habitat: Native to Southeast Asia; now cultivated mainly in Kerala, Andhra Pradesh, Uttar Pradesh, West Bengal, Maharashtra.
English: Ginger.Ayurvedic: Fresh rhizome— Aardraka, Aadrikaa, Shrngibera, shrngavera, Katubhadra. Dried rhi- zome—Shunthi, Naagara, Naagaraa, Naagaraka, Aushadha, Mahaushad- ha, Vishvaa, Vishvabheshaja, Vishvaaushadha.Unani: Fresh rhizome—Zanjabeel- e-Ratab, Al-Zanjabeel. Dried rhizome—zanjabeel, Zanjabeel-e- yaabis.Siddha: Fresh rhizome—Inji, Allam, Lokottai. Dried rhizome— chukku, Sunthi.Action: Rhizome—antiemetic, antiflatulent, hypocholesterolaemic, anti-inflammatory, antispasmodic, expectorant, circulatory stimulant, diaphoretic, increases bioavailabil- ity of prescription drugs. Used for irritable bowel and diarrhoea, colds and influenza. Showed encouraging results in migraine and cluster headache (J Ethnophar- macol, 1990, 29, 267-273; Aust J Med Herbalism, 1995, 7/3, 6978; Natural Medicines Comprehensive Database, 2007.) The Ayurvedic Pharmacopoeia of India recommends dried rhizomes in dyspepsia, loss of appetite, tympanitis, anaemia, rheumatism, cough and dyspnoea; fresh rhizomes in constipation, colic, oedema and throat infections.
Key application: For dyspepsia and prevention of motion sickness (German Commission E); vomiting of pregnancy, anorexia, bronchitis and rheumatic complaints (The British Herbal Compendium); as a post-operative antiemetic. (ESCOP).The rhizome contains an essential oil containing monoterpenes, mainly geranial and neral; and sesquiterpenes, mainly beta-sesquiphellandrene, beta- bisabolene, ar-curcumene and alpha- zingiberene; pungent principles, consisting of gingerols, shogaols and related phenolic ketone derivatives. Other constituents include diarylheptenones, diterpenes, gingesulphonic acid and monoacyldigalactosyl glycerols.Gingerol and shogaol have been shown to suppress gastric contractions. Both fresh and dried rhizomes suppress gastric secretion and reduce vomiting. Gingerol and shogaol have gained importance due to their sedative, anti-inflammatory, antipyretic, analgesic, hypotensive and hepatopro- tective activities.Cardiotonic effects of ginger has been attributed to 6-and 8-shagaols and gingerols. (Antithrombotic effects remain unconfirmed.) Antimigraine effect is due to ginger's ability to decrease platelet aggregation. It also acts as a potent inhibitor of prostaglandins which enhance release of substance P from trigeminal fibers. (PDR, 2004.)Indian ginger is considered only second to Jamaican in quality.There are three main types of Indian ginger—Cochin ginger (light brown or yellowish grey; Calicut ginger from Malabar (orange or reddish brown, resembling African ginger) and Kolkata ginger (greyish brown to greyish blue).
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