Can Matcha Tea Make You Sick? Causes Explained

Matcha appears in tea, lattes, smoothies, desserts, and café drinks, but some people feel nauseous, shaky, or uncomfortable after drinking it. This raises a common question: can matcha tea make you sick?

For most adults, moderate green tea consumption as a beverage is generally considered safe. Matcha still contains caffeine and concentrated tea compounds, so serving size, personal sensitivity, preparation, storage, and added ingredients can affect how someone feels.

So, Can Matcha Tea Make You Sick?

Yes, matcha can make some people feel unwell, although that does not mean it is unsafe for everyone. Green tea consumed as a beverage has not raised safety concerns for adults, according to the National Center for Complementary and Integrative Health, but it does contain caffeine. Concentrated green tea extracts are different and have been linked with nausea and abdominal discomfort.

Because matcha powder is whisked into the drink rather than steeped and removed, the serving includes the powdered leaf. A strong cup may feel more concentrated than lightly brewed green tea.

For more background, read Matchia’s guide on whether matcha tea contains caffeine.

6 Situations Matcha Tea Can Make You Sick

While pure matcha is highly beneficial, specific operational variables from empty-stomach service to improper kitchen storage can lead to unexpected customer discomfort.

1. Too Much Caffeine

Caffeine is a common reason someone may feel sick after matcha. Possible effects include nausea, restlessness, trembling, sleep problems, anxiety, or a fast heartbeat. MedlinePlus also lists nausea and vomiting among possible caffeine effects.

The FDA cites 400 milligrams of caffeine per day as an amount not generally linked with negative effects for most adults, but sensitivity varies. Coffee, energy drinks, soda, supplements, and matcha all add to the daily total.

Cafés should never describe matcha as caffeine-free. Recipe consistency also matters because extra powder can raise the caffeine level.

2. Drinking Matcha on an Empty Stomach

Some people report nausea or stomach discomfort when they drink strong matcha before eating. Research on green tea catechins shows that fasting conditions can increase exposure to these compounds, particularly in concentrated preparations.

A practical approach is to try a smaller serving after food. Businesses should also test drinks at realistic strengths rather than adding extra powder only for a darker color or a stronger taste.

3. The Serving Is Too Strong

More matcha is not always better. A heavily concentrated drink may deliver more caffeine and tea compounds in a short period.

At home, this can happen when powder is measured by eye. In cafés, it can happen when staff use different scoops or prepare drinks without a standard recipe.

Measured tools and clear recipe cards help keep servings consistent. Matchia’s guide to ceremonial, barista, and culinary matcha grades can help buyers choose a suitable grade instead of relying on excessive powder.

4. Milk, Syrups, or Other Ingredients Are the Cause

A matcha latte contains more than matcha. Dairy milk, plant-based milk, syrups, sweeteners, creamers, protein powders, and toppings may all affect digestion.

Food allergy symptoms can include vomiting, diarrhea, cramps, hives, swelling, wheezing, or difficulty breathing.

A person who feels sick after a matcha latte may be reacting to milk, a topping, or cross-contact rather than the tea powder. Cafés and boba shops should keep ingredient information available and follow proper allergen-handling procedures.

5. Poor Storage or Contamination

Matcha should be protected from heat, air, light, strong odors, and moisture. Poor storage can damage its taste and color. According to the U.S. Food and Drug Administration, Moisture also creates a wider food-safety concern because microorganisms need available moisture to grow.

Stale matcha may taste dull without causing illness. However, powder that has become wet, smells unusual, has suspicious clumping, or shows visible contamination should not be served.

Read how to keep matcha fresh and vibrant for practical handling advice.

The prepared drink can also become contaminated through spoiled milk, unsafe water, dirty tools, or poor refrigeration. According to the CDC, common food-poisoning symptoms include diarrhea, stomach cramps, nausea, vomiting, and fever.

6. Medication Interactions or Personal Sensitivity

Green tea may interact with some medicines. NCCIH reports that high-dose green tea can reduce blood levels of nadolol, while concentrated green tea extract may affect atorvastatin levels. People taking prescription medicine should discuss regular or high matcha intake with a clinician or pharmacist.

Personal tolerance also differs. One person may feel fine after a serving, while another feels jittery or nauseous after a smaller amount.

How to Lower the Chance of Feeling Sick?

• Start with a smaller serving.
• Drink matcha after food if an empty stomach causes discomfort.
• Count caffeine from all drinks and supplements.
• Use fresh water and properly stored powder.
• Check milk, syrup, and topping ingredients.
• Stop using matcha that smells unusual or shows moisture damage.
• Seek medical advice for severe, repeated, or worrying symptoms.

Matchia’s guide on judging matcha quality through actual use can help cafés compare products in straight tea, lattes, and other recipes.

Why Matchia Is a Practical Supplier for Businesses

Matchia is a U.S.-based wholesale matcha supplier in Hayward, California, serving cafés, restaurants, boba shops, beverage brands, and food manufacturers. It offers local inventory, cold storage, several matcha grades, and support for commercial buyers.

The range includes Ultra Ceremonial, Ceremonial, Premium, Latte, Culinary, Single Origin Matcha, Hojicha, plus organic and conventional options. Wholesale orders start at 1kg, while private labeling starts at 20kg. Buyers can request 15g samples for $5 per grade plus $6.99 standard shipping, with the sample fee credited toward a first wholesale order.

This gives buyers a practical way to compare flavor, color, strength, and application before choosing a product for repeat use.

Frequently Asked Questions (FAQs)

Why does matcha make me nauseous?

Possible reasons include caffeine sensitivity, a strong serving, drinking it without food, another ingredient in a latte, or an individual digestive response.

Can matcha cause vomiting?

Too much caffeine can cause nausea and vomiting. Vomiting with severe pain, dehydration, swelling, trouble breathing, or repeated diarrhea needs prompt medical attention.

Is matcha safe to drink every day?

Moderate green tea beverage intake is generally considered safe for adults, but tolerance depends on total caffeine, medications, pregnancy, and personal health.

Can expired matcha make you sick?

A past quality date does not automatically mean illness, but matcha with moisture exposure, an unusual odor, visible contamination, or damaged packaging should be discarded. Read does matcha tea expire for more guidance.

Conclusion

So, can matcha tea make you sick? It can cause discomfort in some people because of caffeine, a strong serving, empty-stomach use, added ingredients, poor storage, contamination, or personal sensitivity. Severe or repeated symptoms should not be ignored.

Not sure which matcha grade fits your café, restaurant, boba shop, or beverage product? Start with Matchia’s sample program, compare grades in your recipes, and contact Matchia to discuss wholesale supply.