Tamil: இஞ்சி தண்ணீர்
English: Inji Thanni
Traditional use: Nausea, an unsettled stomach and digestive discomfort
Evidence rating: Evidence-supported for pregnancy-related nausea; limited or mixed for several other types of nausea
Important limitation: Ginger may ease the feeling of nausea, but it cannot treat every cause of sickness or reliably stop vomiting
In many Tamil and Sri Lankan households, ginger is one of the first ingredients reached for when somebody feels sick to their stomach.
Fresh ginger may be sliced into water, crushed into tea or simmered with ingredients such as coriander seeds, cumin, pepper or palm sugar. Recipes vary between families, but the purpose is usually similar: to settle the stomach, provide warmth and help the person tolerate a little fluid.
Ginger has also been documented among the medicinal plants commonly used by Sri Lankan Tamil communities. ome-remedy claims, the use of ginger for nausea has genuine scientific support. However, that support is strongest for particular forms of nausea—especially nausea during pregnancy.
What is inji thanni?
“Inji” means ginger in Tamil, while “thanni” means water.
At its simplest, inji thanni is an infusion made by simmering or steeping fresh ginger in water.
Different households may also add:
- Coriander seeds
- Cumin
- Black pepper
- Cardamom
- Lemon
- Honey
- Jaggery or palm sugar
These additions create distinct family recipes, but ginger is the ingredient most closely associated with nausea relief.
Ginger’s botanical name is Zingiber officinale. Its rhizome—the underground stem commonly called ginger root—is used as both a food ingredient and a traditional remedy.
Does ginger water actually work?
The honest answer
Ginger can help reduce nausea in some people, but it is not a universal anti-sickness treatment.
The strongest and most consistent evidence concerns nausea during pregnancy.
A systematic review and meta-analysis of 12 randomised controlled trials involving 1,278 pregnant women found that ginger significantly reduced nausea compared with placebo. Across the studies as a whole, however, it did not produce a statistically significant reduction in the number of vomiting episodes, although the results showed a possible trend towards improvement. analysis similarly found that ginger improved general pregnancy-related nausea and nausea symptoms, while its effect on vomiting was not statistically significant. al trials and reviews have reported improvements in vomiting as well as nausea, which helps explain why conclusions differ slightly between publications. Overall, the evidence is more dependable for reducing the feeling of nausea than for completely stopping vomiting. s that there is some evidence that foods and drinks containing ginger may help reduce nausea and vomiting during pregnancy. It advises pregnant people to check with a pharmacist before taking ginger supplements. ginger reduce nausea?
Ginger contains naturally occurring compounds including gingerols and shogaols.
Researchers believe these compounds may influence more than one process involved in nausea.
Serotonin signalling
Serotonin helps carry signals between the digestive system and the brain. Certain serotonin receptors, particularly 5-HT3 receptors, are involved in triggering nausea and vomiting.
Laboratory and pharmacological research suggests gingerols and shogaols may partly act on these pathways. The exact anti-nausea mechanism has not been completely established, but possible 5-HT3 receptor activity is one of the leading explanations. movement
Ginger may also influence stomach contractions and the movement of food through the digestive system.
Some studies have found that ginger can accelerate gastric emptying or affect stomach movement, while other studies have not found the same result. It is therefore better described as a possible contributing mechanism rather than a settled explanation.
Ginger probably does not simply “switch nausea off.” Its compounds may affect several digestive and nervous-system pathways at the same time.
What kinds of nausea might ginger help?
Pregnancy-related nausea
This is ginger’s best-supported use.
Many clinical trials used measured ginger powders, capsules or extracts rather than homemade tea. Doses commonly studied were around one gram of dried ginger per day, sometimes divided into several smaller doses. One large trial, for example, compared approximately 1.05 grams of ginger daily with vitamin B6. inger infusion is not standardised and may contain considerably less ginger than a clinical preparation.
Food-style ginger drinks may be acceptable for many pregnant people, but concentrated supplements should be discussed with a pharmacist, midwife or doctor. ncy sickness may be hyperemesis gravidarum and requires medical care rather than home treatment alone.
General mild nausea
The NHS suggests ginger or peppermint tea and foods containing ginger as measures that may help when someone feels mildly nauseated. easonable when the nausea is brief, mild and not accompanied by worrying symptoms.
However, nausea has many possible causes, including:
- Pregnancy
- Infection
- Food poisoning
- Acid reflux
- Medication side effects
- Anxiety
- Migraine
- Recent surgery
- Motion sickness
A drink that helps one cause may do little for another.
Postoperative nausea
Some systematic reviews suggest ginger may reduce postoperative nausea or its severity. Results for vomiting, the overall incidence of postoperative nausea and vomiting, and the need for rescue medication are less consistent. therefore only be considered an adjunct—something used alongside, not instead of, standard anti-sickness treatment and anaesthetic protocols.
People preparing for surgery should tell their medical team about supplements and herbal products they are taking.
Chemotherapy-related nausea
Research into ginger for chemotherapy-related nausea and vomiting is mixed.
Some reviews and trials suggest ginger may offer additional benefit when used alongside standard anti-sickness medication. Other systematic reviews have found no consistent reduction in chemotherapy-related nausea. ts should speak to their oncology team before using ginger supplements. Herbal products may interact with treatment and may not be appropriate for every cancer, medicine or treatment regimen.
Ginger must never replace prescribed chemotherapy anti-sickness medication.
Travel sickness
Despite ginger’s reputation as a travel remedy, high-quality evidence that it reliably prevents motion sickness is lacking. Some small studies exist, but the results are inconsistent. be used as a comforting drink, but it should not be presented as a proven motion-sickness treatment.
A simple inji thanni recipe
This is a gentle household preparation, not a clinical dose.
Ingredients
- 250–300 millilitres of water
- 4–6 thin slices of fresh ginger
- 1 teaspoon of honey, optional
- A small squeeze of lemon, optional
Method
- Wash the ginger thoroughly.
- Cut it into thin slices. Peeling is optional if it has been properly washed.
- Add the ginger and water to a small saucepan.
- Bring the water to a gentle boil.
- Reduce the heat and simmer for 5–10 minutes.
- Strain the drink into a cup.
- Allow it to cool slightly before adding honey.
- Sip it slowly rather than drinking the whole cup at once.
Start with a mild preparation.
Making the drink extremely strong does not guarantee a stronger benefit. Concentrated ginger may instead worsen heartburn, diarrhoea or stomach irritation.
A household drink is not a clinical dose
This distinction is essential.
Clinical trials commonly use standardised ginger powders, capsules or extracts. Researchers can measure the amount participants receive.
A homemade ginger drink varies according to:
- The variety and age of the ginger
- Whether it is fresh or dried
- The amount used
- How finely it is sliced or crushed
- How long it is boiled
- The volume of water
- How much of the drink is consumed
Many pregnancy-nausea trials used approximately one gram of dried ginger powder—or an equivalent preparation—per day.
A household ginger infusion usually contains an unknown quantity and cannot be assumed to provide the same dose or the same effect.
This does not make the traditional drink worthless. It simply means the research cannot be transferred to it perfectly.
Fresh ginger or dried ginger?
Fresh and dried ginger both contain active compounds, but their chemical composition differs.
Fresh ginger generally contains a higher proportion of gingerols. Drying and heating can convert some gingerols into shogaols.
Both forms may have biological activity, but their strength cannot be judged simply by taste. A painfully spicy drink is not automatically more medicinal.
When might inji thanni be taken?
A mild ginger drink may be sipped:
- When mild nausea begins
- Between small meals
- When large meals or strong smells worsen nausea
- After vomiting has settled enough for fluids to be tolerated
- During mild pregnancy nausea, following appropriate medical or pharmacy advice
Small, regular sips may be easier to tolerate than a full cup.
When vomiting or diarrhoea causes significant fluid loss, ginger water should not replace oral rehydration solution. Ginger water does not contain the controlled balance of water, glucose and electrolytes needed to treat dehydration.
Can children drink ginger water?
A weak ginger drink made with food-level quantities may be tolerated by some older children.
It should not automatically be given to babies or very young children, especially when they are vomiting. Children can become dehydrated more quickly than adults.
Seek medical advice when a child:
- Cannot keep fluids down
- Is urinating much less than usual
- Has very dark urine
- Has a dry mouth or no tears
- Appears unusually sleepy, weak or difficult to wake
- Has persistent or severe abdominal pain
- Is a baby and the parent or carer is concerned
Do not add honey for babies under 12 months because honey can contain bacteria that may cause infant botulism. ide effects
Ginger taken by mouth can cause:
- Heartburn
- Abdominal discomfort
- Diarrhoea
- Gas
- Mouth or throat irritation
These effects are more likely with strong preparations or concentrated supplements. ready experience acid reflux may find that a strong ginger drink worsens the burning sensation.
Medicines and ginger supplements
Food-level ginger used in cooking or a mild drink is different from taking a concentrated extract or supplement.
Speak to a pharmacist or healthcare professional before using concentrated ginger supplements when:
- Pregnant or breastfeeding
- Taking regular prescription medicine
- Preparing for an operation
- Receiving chemotherapy
- Taking anticoagulant or antiplatelet medicine
- Managing diabetes or another long-term condition
Potential interactions between ginger supplements and medicines affecting blood clotting have been reported, but the evidence is not completely consistent. It would therefore be inaccurate to claim that ginger definitely causes dangerous bleeding with every blood thinner. The sensible approach is to check before taking concentrated products, particularly with medicines such as warfarin. rescribed medicine because a home remedy appears to help.
What ginger water cannot do
Inji thanni cannot be relied upon to:
- Cure food poisoning
- Kill a stomach virus
- Treat a bacterial infection
- Stop persistent or severe vomiting
- Correct significant dehydration
- Treat appendicitis
- Treat hyperemesis gravidarum by itself
- Replace prescribed anti-sickness medicine
- Replace chemotherapy-related anti-sickness treatment
- Treat unexplained recurring nausea
- “Detox” the body
It is a supportive drink for symptoms, not a diagnosis or complete treatment.
When to seek medical help
Seek medical advice when someone:
- Continues vomiting and cannot keep fluids down
- Shows signs of dehydration
- Is passing very little urine
- Feels persistently faint, dizzy or unusually weak
- Has severe or localised abdominal pain
- Has a high temperature and appears very unwell
- Has ongoing or repeatedly returning nausea
- Is pregnant and cannot retain food or fluids
- Is losing weight because of pregnancy sickness
- Is taking important medication but cannot keep it down
Emergency assessment may be needed for:
- Vomiting blood
- Vomit resembling coffee grounds
- Green vomit
- Sudden or severe abdominal pain
- Confusion
- Collapse
- Severe breathing difficulty
A home remedy should never become a reason to postpone urgent medical treatment.
Tradition and science: the final verdict
Inji thanni is more than a fashionable online wellness drink. Ginger has a documented place in Sri Lankan Tamil medicinal traditions, and modern research provides credible support for its use against some forms of nausea. supports saying:
Ginger may help reduce mild nausea, with the strongest evidence relating to pregnancy-associated nausea.
The evidence does not support saying:
Ginger water cures vomiting, infections, food poisoning or every type of sickness.
Preserving a remedy honestly does not disrespect the tradition.
It protects the tradition from exaggerated claims and helps families understand the difference between a comforting household treatment and a situation requiring professional medical care.
Preserve your family’s version
Was inji thanni prepared in your home?
Some families sliced the ginger. Others crushed it with a stone, boiled it with coriander seeds or softened the heat with jaggery or honey.
Readers may wish to record:
- Who usually prepared it
- The ingredients they added
- Whether fresh ginger or dried ginger was used
- What the family believed it helped
- When it was served
- Whether children and adults received different versions
- Whether the recipe changed after migration
The purpose of documenting a home remedy is not to declare that every inherited belief has been scientifically proven.
It is to preserve the preparation, memory and lived experience while clearly explaining what modern evidence can—and cannot—confirm.
Medical note
This article provides general cultural and educational information. It is not a substitute for diagnosis, prescribed treatment or personalised advice from a doctor, pharmacist, midwife or other qualified healthcare professional.
Sources and Further Reading
Ginger: Pharmacological Evidence
- Bode, Ann M., and Zigang Dong. "The Amazing and Mighty Ginger." In Herbal Medicine: Biomolecular and Clinical Aspects, 2nd ed., edited by Iris F. F. Benzie and Sissi Wachtel-Galor. Boca Raton: CRC Press/Taylor and Francis, 2011. ncbi.nlm.nih.gov — Peer-reviewed chapter summarising the bioactive compounds in ginger (gingerols, shogaols) and the clinical evidence for anti-nausea, anti-inflammatory and digestive effects.
- Ernst, E., and M. H. Pittler. "Efficacy of Ginger for Nausea and Vomiting: A Systematic Review of Randomized Clinical Trials." British Journal of Anaesthesia 84, no. 3 (2000): 367–371. doi.org — Systematic review of clinical trials on ginger for nausea; supports the article's qualified claim that ginger may help with nausea while noting the evidence is mixed for other uses.
- Mashhadi, Nafiseh Shokri, et al. "Anti-Oxidative and Anti-Inflammatory Effects of Ginger in Health and Physical Activity." International Journal of Preventive Medicine 4, Suppl. 1 (2013): S36–S42. ncbi.nlm.nih.gov — Reviews anti-inflammatory properties of ginger compounds; relevant to the article's discussion of what ginger can and cannot do.
Hydration and Warm Fluids
- World Health Organization. Oral Rehydration Salts: Production of the New ORS. Geneva: WHO, 2006. who.int — WHO guidance on hydration; provides the scientific basis for the article's emphasis that warm fluids support recovery primarily through hydration rather than any specific ingredient.
Traditional Medicine Context
- Krishnaswamy, K. "Traditional Indian Spices and Their Health Significance." Asia Pacific Journal of Clinical Nutrition 17, Suppl. 1 (2008): 265–268. — Reviews the role of ginger and other spices in traditional South Asian medicine, providing context for Tamil home-remedy use without overstating clinical evidence.
- Watt, George. A Dictionary of the Economic Products of India. Vol. 3. London: W. H. Allen, 1890. — Historical documentation of ginger's use in South Asian traditional medicine and trade; relevant to the long cultural history of ginger in Tamil domestic practice.
