Ginger (Adraka / Sunthi): Plant Profile, Traditional Use, and Modern Research
The 30-second answer
Ginger is the rhizome of Zingiber officinale, a perennial flowering plant in the Zingiberaceae family – the same family as turmeric and cardamom. It has been used both as a culinary spice and as a medicinal herb across South Asia, China, and the Middle East for at least 2,500 years. In Ayurveda, fresh ginger is called Adraka and dried ginger Sunthi; the two are considered to have distinct properties. Ginger’s active compounds are gingerols and shogaols, and it is one of the more clinically well-studied culinary herbs in the world. As a food supplement in the UK, it is regulated under food law, not as a medicine.
Key facts
- Plant family: Zingiberaceae (same family as turmeric and cardamom)
- Part used: rhizome (fresh = Adraka; dried = Sunthi)
- Active compounds: gingerols (especially 6-gingerol), shogaols, zingerone, paradols, volatile oils
- Traditional context: Vishwabheshaja (“universal medicine”); one of three ingredients in Trikatu
- Doses studied: 500mg–2g daily as standardised extract or dried powder, 4–12 weeks
- Should not use: gallstones, anticoagulant medication (without GP guidance), severe acid reflux, late pregnancy without GP guidance
What is ginger?
Ginger is one of the most widely used herbs and spices in the world, found in kitchens, traditional medicine cabinets, and clinical research papers across cultures. Its botanical name is Zingiber officinale, and it belongs to the Zingiberaceae family – putting it in the same plant family as turmeric and cardamom. The plant grows up to a metre tall, with sword-shaped leaves emerging directly from the underground rhizome that is harvested for use.
The rhizome – commonly but inaccurately called “ginger root” – has a knobbly, finger-like form, pale tan skin, and a fibrous, fragrant yellow interior. The Sanskrit names Adraka (fresh) and Sunthi (dried) reflect a distinction Ayurveda has long made: fresh and dried ginger are considered to have somewhat different therapeutic profiles, and classical formulations specify which to use.
Fresh (Adraka) and dried (Sunthi) ginger have distinct Ayurvedic profiles.
Which parts of the plant are used?
The rhizome is the only medicinal part used in traditional formulations and modern supplements. Fresh rhizome (Adraka) is grated, juiced, sliced, or steeped; dried rhizome (Sunthi) is ground into powder or processed into standardised extract. Drying changes the compound profile measurably, increasing the proportion of shogaols relative to gingerols.
The leaves, flowers, and roots (technically distinct from the rhizome) are not used in traditional Ayurvedic medicine or modern supplement preparations.
Did you know?
Ginger is not actually grown from a seed in modern cultivation – it is propagated by replanting pieces of mature rhizome with growing buds. The plant rarely flowers, and rarely sets viable seed, so most ginger grown today is genetically very similar to ginger grown thousands of years ago.
Active compounds (and the fresh-vs-dried distinction)
Ginger’s phytochemistry is dominated by a class of pungent compounds called gingerols – most notably 6-gingerol, alongside 8-gingerol and 10-gingerol. These are responsible for the characteristic warm, peppery quality of fresh ginger and the majority of its measured biological activity in laboratory research.
When ginger is dried or heated, gingerols dehydrate to form a related class of compounds called shogaols. The most studied is 6-shogaol. Shogaols tend to be more pungent and, in laboratory studies, more potent on certain endpoints than the parent gingerols. This is the chemistry behind the Ayurvedic distinction between Adraka (fresh, gingerol-dominant) and Sunthi (dried, shogaol-elevated): they have different compound profiles and were historically recommended for different applications.
Ginger also contains zingerone (formed during cooking), paradols, and a complex volatile oil fraction including zingiberene, beta-bisabolene, and other terpenes responsible for the aroma.
2,500+
Years of documented use
100+
Human clinical trials
2
Forms in classical Ayurveda
A brief history of ginger
c. 500 BCE – 600 CE
Ancient and classical period
Ginger appears in Confucius’ Analects (5th century BCE), in early Indian Sanskrit medical texts, and in classical Greek and Roman writings. The Charaka Samhita described both Adraka and Sunthi as distinct ingredients, recognising their different applications. Ginger reached the Mediterranean via Indian Ocean trade routes well before the Roman era.
c. 600 – 1500 CE
Medieval period
Ginger was widely traded across Europe through medieval Arab merchants, becoming a major item of medieval European cuisine and herbal medicine. The Bhavaprakasha described ginger in granular detail in classical Ayurvedic terms, including its role in Trikatu. Its description as Vishwabheshaja – “universal medicine” – reflects its breadth of traditional use.
1500s – 1900s
Global cultivation and trade
Spanish and Portuguese traders introduced ginger cultivation to the Caribbean, Central America, and West Africa during the colonial era. By the 19th century, ginger was grown across the tropics. British colonial physicians documented its widespread use across South Asia.
1879 – 1990s
Chemistry and early research
The first detailed chemical investigation of ginger was published by John Thresh in 1879, identifying the resinous fraction responsible for ginger’s pungency. Gingerol was isolated and characterised through the early 20th century. Indian and Japanese researchers drove much of the late-20th-century pharmacology work.
1990s – present
Clinical research era
Modern clinical research on ginger has expanded substantially since the 1990s, with over 100 published human trials investigating endpoints including digestive comfort, joint markers, glycaemic markers, lipid markers, and pregnancy and chemotherapy-related nausea. Ginger has become one of the more thoroughly clinically studied culinary herbs.
Traditional Ayurvedic context
In classical Ayurveda, ginger is described as pungent, hot, and – unusually – heavy in fresh form and light in dried form. Fresh ginger primarily balances kapha; dried ginger pacifies all three doshas, which is why it is often considered the more medicinally versatile of the two.
Vishwabheshaja – the universal medicine, useful in nearly all conditions when properly applied.
— traditional Ayurvedic description of dried ginger (Sunthi)
Traditional Ayurvedic descriptions of ginger’s role include use as one of the three components of Trikatu (with black pepper and long pepper), classical pairings with honey, ghee, lemon, and warming spices, traditional use in classical formulations for digestive support, and topical preparations described in medieval texts. These descriptions reflect classical Ayurvedic categorisation and historical use; they do not constitute claims about the effects of any modern food supplement.
Modern research
Ginger is among the most clinically studied culinary herbs, with over 100 published human trials and several major meta-analyses. Most trials are small to moderate (40–200 participants) and short (4–12 weeks). The studies described below are reported here as published research; the descriptions are not statements about the effects of any r‑veda product.
| Topic | Study | Participants | Duration |
|---|---|---|---|
| Joint markers (meta) | Daily 2015 | 5 trials pooled | – |
| Chemo nausea (meta) | Marx 2013 | 5 trials pooled | – |
| Pregnancy nausea (review) | Lete 2016 | 12 trials pooled | – |
| Glucose markers | Mozaffari-Khosravi 2014 | 88 | 8 weeks |
| Lipid markers (meta) | Wang 2017 | 12 trials pooled | – |
| Dysmenorrhoea (meta) | Anh 2020 | 7 trials pooled | – |
| Comprehensive review | Bode & Dong 2011 | Multiple trials | – |
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See full study details
Joint markers
Daily, Yang, Kang, and Park (2015, Osteoarthritis and Cartilage) ran a meta-analysis of five RCTs evaluating ginger supplementation in osteoarthritis, measuring pain and function endpoints. Effect sizes were modest but consistent across the included trials.
Nausea-related research
Marx et al. (2013, Nutrition Reviews) reviewed five RCTs on ginger and chemotherapy-induced nausea. Lete and Allué (2016, Integrative Medicine Insights) reviewed twelve RCTs on ginger and pregnancy-related nausea, finding consistent measurement direction across the included trials.
Metabolic research
Mozaffari-Khosravi et al. (2014, Complementary Therapies in Medicine) studied 88 adults with type 2 diabetes given 3g of ginger powder daily for 8 weeks, measuring fasting glucose, HbA1c, and lipid markers. Wang et al. (2017, Critical Reviews in Food Science and Nutrition) ran a meta-analysis of 12 RCTs on ginger and lipid markers.
Other endpoints
Anh et al. (2020, Nutrients) reviewed seven trials on ginger and primary dysmenorrhoea, measuring menstrual pain endpoints. Bode and Dong (2011, Herbal Medicine: Biomolecular and Clinical Aspects) provided a comprehensive review of ginger’s pharmacology and clinical evidence.
How to read this evidence base
Ginger has one of the broader and more methodologically diverse clinical evidence bases of any single herb. Multiple meta-analyses across different endpoints make the picture clearer than for many Ayurvedic herbs. Effect sizes are typically modest but reasonably consistent. Doses used in research range widely (250mg to 4g per day), and most trials use either dried powder or standardised extracts.
Forms and preparations
Ginger has been consumed in many forms.
- Fresh rhizome (Adraka)–grated, sliced, or juiced
- Dried powder (Sunthi)–ground rhizome; Ayurvedic classical form
- Ginger tea–fresh slices steeped in hot water
- Trikatu–the classical three-pungent Ayurvedic formula combining ginger, black pepper, and long pepper
- Capsule–dried powder or standardised extract; the most dose-accurate option for daily use
Doses used in clinical research range from 500mg to 2g of dried ginger or standardised extract per day, taken with food, over study periods of 4 to 12 weeks. These figures describe what has been studied in research – they are not dietary recommendations.
Suitability and cautions
Ginger is generally well tolerated at culinary doses. At supplemental doses, several cautions apply:
- People with gallstones or significant gallbladder dysfunction should consult a GP before supplemental use.
- People taking anticoagulants such as warfarin should consult a GP; ginger may have mild blood-thinning effects.
- People with severe acid reflux, peptic ulcer disease, or hyperacidity may find supplemental ginger aggravating.
- Pregnancy: ginger has long traditional use during pregnancy, particularly for early-pregnancy nausea, but high doses in late pregnancy are typically avoided. Consult a healthcare practitioner before supplemental use during pregnancy.
- People with diabetes on glucose-lowering medication should monitor blood sugar; ginger may further lower glucose markers.
As with any food supplement, stop use and consult a healthcare professional if you experience any adverse effects.
