Teas for Nausea: Ginger, Peppermint, Chamomile, and Fennel Teas and Safety Guidelines

Tea for nausea can be useful as a gentle supportive measure: warm or cool liquids help prevent dehydration, small sips are less irritating to the stomach, and certain herbs, especially ginger, have a moderate evidence base for some types of nausea. The NHS specifically recommends sipping cold drinks for nausea and allows ginger or mint tea as simple self-help measures. [1]

However, tea is not a universal antiemetic treatment. Nausea can occur with viral gastroenteritis, food poisoning, gastritis, migraines, pregnancy, motion sickness, gallstones, pancreatitis, intestinal obstruction, infection, chemotherapy, drug side effects, and many other conditions. Therefore, not only the choice of tea is important, but also the cause of nausea, the presence of vomiting, fever, pain, blood, dehydration, and pregnancy. [2]

If nausea is accompanied by vomiting or diarrhea, the main goal is not to "settle the stomach with herbs," but to prevent dehydration. The NHS recommends replacing lost sugar, salts, and minerals when vomiting or diarrhea occurs, and a pharmacist can recommend oral rehydration solutions. [3]

Ginger tea has the most compelling evidence among home remedies for nausea, but it is not a substitute for treating the underlying cause. The National Center for Complementary and Integrative Health notes that ginger has been studied for various types of nausea and vomiting, with the most compelling evidence relating to nausea and vomiting associated with pregnancy; for motion sickness, most studies have shown no convincing benefit. [4]

The main practical conclusion: tea can be part of the treatment for mild nausea, as long as the person is drinking and urinating, and there is no severe pain, blood, confusion, high fever, neck stiffness, repeated vomiting, or other warning signs. If fluid retention is not possible, signs of dehydration or symptoms of a serious illness appear, a doctor is needed, rather than switching from one tea to another. [5]

Situation	Can I try the tea?	What is most important
Mild nausea without vomiting	Yes	Small sips and observation
Nausea with 1 episode of vomiting	You can be careful	A pause after vomiting and then small sips
Vomiting and diarrhea	Tea can be an additional drink	Oral rehydration solution
Nausea during pregnancy	Only safe options and after assessing the severity	Drink plenty of fluids and contact a doctor if vomiting occurs.
Nausea during chemotherapy	Tea only as an addition	Antiemetic regimen prescribed by an oncologist
Nausea with severe pain, blood, confusion	No	Urgent medical care

Table source: NHS, Mayo Clinic, National Center for Complementary and Integrative Health, USA. [6] [7] [8]

How to drink tea when you're nauseous

When experiencing nausea, not only the type of tea but also the method of drinking it is important. Drinking a large volume of liquid quickly stretches the stomach and can increase the urge to vomit, so it's safer to sip, pause, and gradually increase the volume if vomiting does not recur. The NHS also recommends taking regular sips of a cold drink when experiencing nausea. [9]

The temperature of the drink is adjusted individually. Some people find it easier to drink warm tea because it reduces spasms and subjectively "soothes" the stomach; others prefer a cool, odorless drink, especially during pregnancy, migraines, chemotherapy, or increased sensitivity to odors. The American Cancer Society notes that for nausea during cancer treatment, cold, clear liquids, including tea, may be easier on the stomach. [10]

If a person has already vomited, don't immediately drink a full glass of tea. It's better to wait a few minutes, then start with 1-2 small sips, and if vomiting continues, use very small amounts. The Centers for Disease Control and Prevention (CDC) notes that even with diarrhea and vomiting, many patients can be maintained with oral fluids if given small volumes of rehydration solution, 5-10 milliliters every 1-2 minutes. [11]

In cases of vomiting and diarrhea, tea should not replace oral rehydration solution. Herbal or regular tea contains water, but usually does not contain the correct ratio of glucose and electrolytes to replace losses; therefore, if significant fluid loss occurs, it is better to use a pharmacy solution and reserve tea as a supplementary drink unless it aggravates symptoms. [12]

Drinks that are too strong, too hot, too sweet, too sour, or too carbonated can worsen nausea, heartburn, diarrhea, or stomach irritation. For gastritis, reflux disease, peptic ulcers, and pregnancy toxicosis, it's generally best to choose weak tea, drink small portions, and avoid strong odors. [13]

Drinking Rules	Practical meaning
Drink in small sips	Less risk of recurrent vomiting
Do not drink in one gulp after vomiting.	The stomach needs time to calm down.
Choose a warm or cool drink according to your tolerance.	There is no universal temperature
Don't make the tea too strong	Less risk of stomach irritation and excess caffeine
For vomiting and diarrhea, use a rehydration solution.	Tea does not replenish electrolytes like a medicinal solution.
If the condition worsens, do not continue home experiments.	Nausea can be a symptom of a dangerous condition.

Table source: NHS, Mayo Clinic, Centers for Disease Control and Prevention. [14] [15] [16]

Ginger tea: the most studied option

Ginger tea is the most widely accepted home remedy for nausea, although most studies have examined ginger in capsule, powder, extract, or dietary forms, rather than the tea itself. The National Center for Complementary and Integrative Health (NCCIH) reports that ginger may be helpful for nausea and vomiting of pregnancy and has also been studied for postoperative and chemotherapy-induced nausea.[17]

During pregnancy, ginger is considered a possible adjunctive measure, but not a substitute for medical evaluation for severe vomiting. The American College of Obstetricians and Gynecologists reports that ginger may reduce nausea in some pregnant women, but also emphasizes the role of vitamin B6 as a safe, over-the-counter first-line treatment and the need to seek medical attention for severe symptoms. [18]

The American College of Obstetricians and Gynecologists' clinical bulletin states that treating nausea and vomiting of pregnancy with ginger has shown some benefit in reducing nausea and may be considered a non-drug option. However, if an inability to drink, weight loss, infrequent urination, severe weakness, or signs of dehydration occur, medical evaluation and sometimes intravenous rehydration are required. [19]

The data on ginger during chemotherapy are less clear. The US National Cancer Institute recommends sipping fluids throughout the day for nausea and vomiting, and mentions tea and ginger drink as options. However, medications for chemotherapy-induced nausea should be selected by an oncologist based on the patient's risk of vomiting. [20]

Side effects of ginger are generally dose-related, including heartburn, abdominal discomfort, diarrhea, and irritation of the mouth or throat. The National Center for Complementary and Integrative Health notes that high doses of ginger can cause these side effects, and it's best to consult a doctor before using ginger regularly during pregnancy. [21]

When ginger tea might be appropriate	When caution is needed
Mild nausea without any dangerous symptoms	Heartburn, gastroesophageal reflux disease
Morning sickness in pregnancy after discussing with your doctor	Severe vomiting of pregnant women and signs of dehydration
Nausea during cancer treatment as an adjunct	Antiemetic drugs should not be replaced
Nausea after overeating or eating disorders	Severe pain, blood, high temperature
Intolerance to strong caffeinated tea	Allergy or worsening symptoms from ginger
The desire to drink something soft and unsweetened	Taking anticoagulants requires consultation with a doctor.

Source of table: US National Center for Complementary and Integrative Health, American College of Obstetricians and Gynecologists, US National Cancer Institute. [22] [23] [24]

Peppermint tea: It may help, but not for everyone.

Peppermint tea is often used for mild nausea, a feeling of heaviness, cramps, and an unpleasant taste in the mouth. The NHS lists peppermint tea as one of several simple measures that can help with nausea, along with sips of cold drinks, fresh air, distraction, and small, frequent meals. [25]

The scientific basis for mint is better studied than for tea, but for peppermint oil, particularly in enteric-coated capsules for irritable bowel syndrome. The US National Center for Complementary and Integrative Health reports that peppermint oil may improve symptoms of irritable bowel syndrome in adults, but side effects include acid reflux and dyspepsia. [26]

There are small studies on peppermint oil and aromatherapy for nausea associated with chemotherapy, but this does not mean that regular peppermint tea has a proven strong antiemetic effect. The US National Center for Complementary and Integrative Health notes that a small number of studies suggest possible benefit of peppermint extract taken orally or inhaled peppermint oil for nausea and vomiting in patients undergoing chemotherapy, but this remains a complement to, not a replacement for, standard antiemetic regimens. [27]

Peppermint tea may worsen conditions like gastroesophageal reflux disease, heartburn, and hiatal hernia because peppermint can relax the lower esophageal sphincter and increase acid reflux. The National Center for Complementary and Integrative Health (NCCIH) warns that peppermint oil should not be taken by people with a hiatal hernia or gastroesophageal reflux disease, especially in high doses.[28]

It's important to distinguish between peppermint tea and peppermint essential oil. Essential oils should not be drunk as tea or taken internally without a medical prescription, as the concentration of active ingredients is incomparably higher, and the risk of irritation, toxicity, and dosing errors is greater. The National Center for Complementary and Integrative Health (NCCIH) lists side effects of oral peppermint oil as including heartburn, nausea, abdominal pain, and dry mouth. [29]

Peppermint tea for nausea	Comment
May subjectively relieve mild nausea	Supported by NHS practice guidelines
It might be nicer than regular water.	Especially if water is disgusting
The evidence is stronger for peppermint oil than for tea.	You can't automatically transfer data from capsules to tea
May worsen heartburn	Use caution if you have reflux disease.
Does not replace antiemetic drugs during chemotherapy	Oncological nausea requires a preventive regimen
Essential oil should not be drunk as tea.	Risk of overdose and irritation

Table source: NHS, National Center for Complementary and Integrative Health, US. [30] [31] [32]

Chamomile tea: A mild drink, but little evidence for nausea

Chamomile tea is often perceived as a gentle remedy for stomach, sleep, and anxiety, but the evidence for nausea specifically is limited. The US National Center for Complementary and Integrative Health describes chamomile as a herb that has been studied for a variety of conditions, but notes limitations in the evidence and safety concerns in certain populations. [33]

Chamomile tea may be helpful as a warm liquid if plain water is unpleasant and there is no allergy. However, it is not a proven treatment for vomiting, gastroenteritis, pregnancy, migraines, or chemotherapy-induced nausea. If vomiting or diarrhea persists, fluid and electrolyte replacement are more important than choosing a soothing herb. [34]

Chamomile allergies are especially likely in people sensitive to plants in the Asteraceae family: ragweed, chrysanthemums, daisies, and marigolds. The National Center for Complementary and Integrative Health (NCCI) notes that these individuals have a higher risk of allergic reactions to chamomile, and that severe reactions are rare but possible. [35]

Chamomile may interact with medications. The US National Center for Complementary and Integrative Health reports possible interactions between chamomile and cyclosporine and warfarin, as well as preliminary evidence that chamomile may have some estrogen-like effects and potentially impact estrogen-sensitive conditions.[36]

Caution is advised when using chamomile during pregnancy. A 2025 systematic review of chamomile use during pregnancy and postpartum concluded that safety data are insufficient, and the literature contains isolated risk signals. Therefore, regular use of chamomile products during pregnancy should be discussed with an obstetrician/gynecologist. [37]

When chamomile tea might be appropriate	When to avoid or discuss with a doctor
Mild nausea without vomiting or dangerous symptoms	Allergy to ragweed, chrysanthemums, daisies
Nausea due to anxiety or stomach irritation	Taking warfarin or cyclosporine
The desire to drink a soft, warm drink	Pregnancy and breastfeeding without consultation
Caffeine intolerance	Hormonally sensitive diseases
Small volumes for portability	Repeated vomiting, blood, severe pain
As a supplement to rehydration	Not a substitute for rehydration solution for diarrhea

Table source: US National Center for Complementary and Integrative Health, 2025 review of chamomile during pregnancy and postpartum.[38][39]

Fennel tea: a traditional remedy with limited evidence

Fennel tea is traditionally used for bloating, cramping, fullness, and nausea, but there is little clinical evidence specifically for nausea. A 2025 study on the effects of fennel tea on gastric motility specifically notes that fennel tea is widely used as a folk remedy for stomach pain, nausea, and bloating, but there is limited scientific evidence for this use. [40]

Fennel may affect gastric motility. A 2025 study reported that fennel tea has a region-specific effect on gastric motility, relaxing the fundus and body of the stomach and stimulating the antrum. This may explain its traditional use for bloating, but it does not prove that fennel reliably treats nausea of any cause. [41]

The main safety concern relates to estragole, a substance naturally present in fennel. Swissmedic warned in 2024 that recent data indicate potential harm from high amounts of estragole, and the significance of these data for humans has not yet been fully elucidated; therefore, caution is advised when using fennel products in pregnant women, infants, and children under 4 years of age. [42]

Fennel should not be used as a regular herbal tea during pregnancy, breastfeeding, in young children, or in people with hormonally sensitive conditions without consulting a doctor. A review of commonly used herbal teas during pregnancy indicates that fennel may have drug interactions via liver enzymes and should be used with caution. [43]

For adults without any particular risks, occasional weak fennel tea may be acceptable as a beverage, as long as it doesn't aggravate nausea, heartburn, or cramps. However, in cases of severe nausea, repeated vomiting, pain, fever, pregnancy, cancer treatment, or taking important medications, it's best not to rely on fennel as a primary remedy. [44]

Fennel tea	Grade
Traditionally used for bloating and nausea	There is little evidence
May affect gastric motility	This is not equivalent to a proven antiemetic effect.
Contains estragole	Caution is required when using regularly.
Not the best choice for pregnant women	A doctor's consultation is required
Not a good choice for infants and children under 4 years of age	Swissmedic advises caution
Does not replace medical care	Especially in cases of vomiting, pain and dehydration

Table source: Swissmedic, 2025 study on fennel tea and gastric motility, review of herbal teas during pregnancy. [45] [46] [47]

Black, green, and regular tea: when they help and when they make things worse

Black and green tea can be an acceptable source of fluid for mild nausea, as long as they are weak, not too hot, and don't cause heartburn. However, their antiemetic effect hasn't been proven to the same extent as ginger's for certain conditions; more often, they help simply as a familiar beverage, easier to sip. [48]

Caffeine can be problematic. For some people, strong tea increases anxiety, palpitations, tremors, heartburn, diarrhea, and nausea, especially on an empty stomach. For those with gastritis, reflux disease, peptic ulcers, insomnia, and pregnancy, it's usually wiser to choose weak tea, decaffeinated tea, or an herbal drink, as long as it's safe for the individual. [49]

During pregnancy, it's important to consider your total daily caffeine intake from tea, coffee, chocolate, cola, energy drinks, and some medications. The NHS recommends that pregnant women consume caffeine, but not more than 200 milligrams per day, as regularly exceeding this limit is associated with an increased risk of pregnancy complications. [50]

Strong tea can also irritate the stomach due to tannins and bitterness, especially if drunk on an empty stomach. Therefore, for nausea, it's best to drink weak tea, a small portion, without a lot of sugar, and without additives that can worsen the condition. [51]

If nausea is associated with vomiting and diarrhea, regular tea should not be the only beverage consumed. It does not contain adequate electrolytes, and strong tea with caffeine can increase urination and subjective discomfort; if fluid loss occurs, oral rehydration solution is more important. [52]

Drink	When might it be appropriate?	When it can get worse
Weak black tea	Mild nausea, usual drink	Heartburn, anxiety, insomnia
Weak green tea	Mild nausea without vomiting	Caffeine sensitivity
Decaffeinated tea	Pregnancy, evening time, caffeine sensitivity	If there is an individual intolerance
Strong tea	Sometimes with caffeine addiction	Gastritis, reflux, palpitations
Sweet tea	It might give you some energy.	May increase nausea or diarrhea
Tea for vomiting and diarrhea	Just an addition	Rehydration solution needed

Table source: NHS, Mayo Clinic. [53] [54] [55]

Teas during pregnancy, in children and during cancer treatment

Nausea is common during pregnancy, but regular use of herbal teas should not be taken as completely safe just because they are "natural." The American College of Obstetricians and Gynecologists notes that vitamin B6 may be the first safe over-the-counter remedy, doxylamine can be added if needed, and ginger may reduce nausea in some pregnant women; severe vomiting requires medical attention. [56]

It's especially important for pregnant women to stay hydrated. The American College of Obstetricians and Gynecologists recommends aiming for 8-12 cups of water per day, as not drinking enough fluids can lead to dehydration and worsen nausea; if you're unable to drink for an extended period or if you experience signs of dehydration, intravenous rehydration may be necessary. [57] [58]

In children, tea should not be the primary treatment for vomiting. For vomiting and diarrhea, oral rehydration solution (ORS) is more important than herbal tea. Small amounts and monitoring of urination are recommended. The NHS notes that dehydration and fluid loss due to vomiting or diarrhea require replacing sugar, salts, and minerals with ORS. [59]

During cancer treatment, tea can be part of a supportive fluid regimen, but it does not replace prescribed antiemetic medications. The US National Cancer Institute recommends sipping fluids throughout the day for nausea and vomiting, including water, broth, fruit juices, ginger drink, tea, and sports drinks. However, prevention of chemotherapy-induced nausea should be based on the risk of vomiting associated with treatment. [60]

The American Society of Clinical Oncology, in an update to its antiemetic therapy guidelines, stated that evidence is insufficient to recommend for or against ginger and other complementary therapies for chemotherapy-induced nausea. Therefore, ginger tea should be considered as an adjunctive measure only after consultation with the oncology team, especially if the patient is taking anticoagulants, has thrombocytopenia, mucositis, diarrhea, or is at high risk of dehydration. [61]

Group	Which teas should you be more careful with?	Top priority
Pregnant women	Chamomile, fennel, strong caffeinated tea	Fetal safety and prevention of dehydration
Children	Any herbal teas instead of rehydration	Oral rehydration solution
Patients undergoing chemotherapy	Ginger, mint, herbal mixtures without approval	Prescribed antiemetic regimen
People with reflux	Mint, strong tea, sour drinks	Do not aggravate heartburn
People on warfarin or cyclosporine	Chamomile	Avoid drug interactions
People with hormone-sensitive tumors	Fennel, chamomile with regular use	Discussion with a doctor

Source of table: American College of Obstetricians and Gynecologists, National Institute of Diabetes and Digestive and Kidney Diseases, American Society of Clinical Oncology, National Cancer Institute. [62] [63] [64] [65]

When tea is no longer enough for nausea

Tea is not suitable as a home remedy if nausea is accompanied by signs of a serious condition. The Mayo Clinic recommends seeking immediate medical attention if nausea and vomiting are accompanied by chest pain, severe abdominal pain or cramps, visual impairment, confusion, high fever with a stiff neck, foul-smelling vomiting, or rectal bleeding. [66]

With repeated vomiting, the danger is dehydration. The Mayo Clinic advises calling a doctor if a person cannot keep fluids down, becomes confused, drowsy, or less active, has bloody or black stools, a fever of 102 degrees Fahrenheit or higher, or diarrhea lasting 24 hours or more. [67]

In adults, vomiting for more than 1-2 days, inability to keep down fluids, signs of severe dehydration, rapid heartbeat, confusion, sunken eyes, infrequent urination, or significant weight loss require a visit to the doctor. NHS Inform specifically lists these situations as reasons to contact a doctor for vomiting in adults. [68]

Blood in vomit, black stools, severe abdominal pain, high fever, neck stiffness, jaundice, new severe headache, pregnancy with uncontrollable vomiting, chemotherapy treatment with fever, or severe weakness—these are situations where tea can delay proper treatment. In such cases, it's important to look for the underlying cause rather than choosing a stronger herbal infusion. [69]

If nausea persists for weeks, is associated with weight loss, anemia, difficulty swallowing, night pain, persistent heartburn, frequent vomiting, a new medication, or cancer, a routine, but not delayed, diagnosis is necessary. Even if tea temporarily alleviates symptoms, it does not rule out gastritis, ulcers, gallbladder disease, pancreatitis, intestinal disease, pregnancy, migraines, or a drug-related cause. [70]

Symptom	Why tea is not enough
Unable to retain liquid	Intravenous rehydration may be required.
Confusion, extreme drowsiness	Dehydration, infection, and intoxication are possible.
High fever and stiff neck	Meningitis is possible
Severe abdominal pain	A surgical cause is possible
Blood in vomit or black stool	Possible bleeding
Vomiting with a fecal odor	Possible intestinal obstruction
Nausea due to chemotherapy and fever	A dangerous infection is possible

Table source: Mayo Clinic, NHS Inform. [71] [72] [73]

FAQ

What tea is best for nausea? Ginger tea has been the most studied, particularly for nausea and vomiting of pregnancy, but the data relate primarily to ginger as a food or supplement, not just tea. Peppermint tea may subjectively help with mild nausea, but the evidence is stronger for peppermint oil for other gastrointestinal conditions.[74][75]

Is it safe to drink ginger tea during pregnancy? Ginger may reduce nausea in some pregnant women, but regular use should be discussed with an obstetrician/gynecologist, especially if you have severe vomiting, weight loss, dehydration, a risk of bleeding, or are taking medications. The American College of Obstetricians and Gynecologists also lists vitamin B6 as a safe, over-the-counter option. [76] [77]

Can you drink mint tea if you have gastritis or heartburn? Mint can worsen symptoms of heartburn and gastroesophageal reflux disease, so mint tea isn't suitable for everyone. If you experience a burning sensation, sour belching, or chest pain after drinking mint, it's best to choose a different beverage. [78]

Does chamomile tea help with nausea? Chamomile tea may be a mild, warm drink, but there is little convincing evidence as an antiemetic. It should be avoided if you are allergic to plants in the Asteraceae family and used with caution if you are taking warfarin, cyclosporine, are pregnant, or have hormone-sensitive conditions. [79]

Can fennel tea be used for nausea? Fennel has traditionally been used for bloating and nausea, but the evidence is limited. Due to its estragole content and potential medicinal and hormonal effects, fennel tea should not be used regularly by pregnant women, infants, children under 4, and people with hormonally sensitive conditions without consulting a doctor. [80] [81]

What's better for vomiting: tea or rehydration solution? For vomiting and diarrhea, oral rehydration solution is better because it replenishes water, salts, and minerals. Tea can be drunk in addition if it can be retained and does not increase nausea. [82]

Is it okay to drink green or black tea if you're feeling nauseous? It's fine if the tea is weak and well-tolerated, but strong tea can worsen heartburn, palpitations, anxiety, and stomach irritation. During pregnancy, it's important to consider your total daily caffeine intake and not exceed 200 milligrams per day. [83]

Why does tea sometimes make you feel worse? Causes include too much tea, too much tea, too much tea, too much tea, caffeine, acidic additives, sugar, mint for reflux, or an individual intolerance to the herb. When you're feeling nauseous, it's safer to sip and choose a weak drink without a strong odor. [84]

Is tea safe for chemotherapy-induced nausea? It can be used as additional fluid if tolerated, but tea is not a substitute for antiemetic medications. The National Cancer Institute recommends sipping fluids throughout the day, including tea, while the American Society of Clinical Oncology notes that the evidence on ginger and other complementary therapies is insufficient to make a specific recommendation for or against them. [85] [86]

When should you seek immediate medical attention? Urgent care is needed for chest pain, severe abdominal pain, confusion, high fever with a stiff neck, blood in vomit or stool, fecal-smelling vomiting, inability to keep fluids down, severe drowsiness, infrequent urine output, pregnancy with persistent vomiting, or fever after chemotherapy. [87] [88]

Key points from experts

Experts from the National Center for Complementary and Integrative Health, National Institutes of Health, U.S.A., concluded that ginger has been studied for various types of nausea, with the most compelling evidence for nausea and vomiting associated with pregnancy. High doses can cause heartburn, diarrhea, abdominal discomfort, and irritation in the mouth or throat. [89] [90]

Iñaki Lete and José Allué, researchers and authors of a peer-reviewed review in Integrative Medicine Insights, highlight that ginger's active constituents, including gingerols and shogaols, have been studied for nausea of pregnancy and as an adjunct to chemotherapy-induced nausea, but the forms, doses, and quality of studies vary. [91]

Jorn Herrstedt, MD, Odense University Hospital, and members of the Multinational Association of Supportive Care in Cancer and the European Society for Medical Oncology consensus statement. Their updated guidelines for the prevention of nausea and vomiting during chemotherapy and radiation therapy emphasize that cancer nausea requires a regimen tailored to the emetic risk of treatment; teas and herbs can only be adjunctive. [92]

Tess Ferguson, MD, PhD, obstetrics and gynecology, Idaho College of Osteopathic Medicine, and Barbara Gordon, MD, nutritionist and dietitian, Idaho State University, conducted a 2025 systematic review of chamomile during pregnancy and postpartum. Their review concluded that safety data are insufficient to make firm recommendations, and that regular use of chamomile products by pregnant women requires caution. [93]

Experts from Swissmedic, the Swiss Agency for Therapeutic Products, issued a 2024 warning regarding fennel: fennel naturally contains estragole, and large amounts of this substance can be potentially harmful; therefore, pregnant women, infants, and children under 4 years of age should not use fennel products without caution and medical advice. [94]

Result

Teas for nausea can be useful as a gentle adjuvant, especially if sipped and chosen according to tolerance. Ginger has been the most studied; mint may help with mild nausea but may worsen heartburn; chamomile is more of a soothing tea with limited evidence; fennel has traditionally been used for bloating and nausea, but evidence is limited and there are safety concerns with regular use.[95] [96] [97] [98]

If nausea is accompanied by vomiting or diarrhea, the primary drink should not be tea, but rather oral rehydration solution, especially in children, the elderly, pregnant women, patients with chronic diseases, and people undergoing cancer treatment. In this situation, tea can only be used as additional fluid if it does not aggravate symptoms. [99]

If you are pregnant, undergoing cancer treatment, taking anticoagulants, immunosuppressants, have reflux disease, peptic ulcers, hormone-sensitive tumors, or have severe vomiting, it's best to discuss any herbal teas with your doctor. Natural origin doesn't mean they're completely safe, especially when used regularly or in combination with medications. [100] [101] [102]

Urgent medical attention is needed for severe abdominal or chest pain, confusion, high fever and neck stiffness, blood in vomit or stool, fecal-smelling vomiting, inability to keep fluids down, severe drowsiness, infrequent urination, rapid deterioration, pregnancy with persistent vomiting, or fever after chemotherapy. In these situations, tea can dangerously delay proper treatment. [103] [104]