10 Unexpected Side Effects Of Peppermint Tea

Peppermint—the word conjures up images of bubble gum, right? But it is an active ingredient in various medicinal and cosmetic products, including tea. Though a popular beverage, few are aware of the side effects of peppermint tea. This healthy drink is a soothing way to enjoy the medicinal properties of peppermint but can cause issues for certain individuals due to its contact sensitivity and allergic potential. Wondering why it is not healthy? Well, keep reading to know the answer! 

This article discusses the potential risks associated with the excessive consumption of peppermint tea in detail. Whether it is an allergy flare-up or a discomforting stomach reaction, understanding the side effects can help you enjoy peppermint tea safely. Keep reading to learn more about the adverse effects of peppermint tea and how to include it safely in your routine.

Know The Flip Side: Peppermint Tea

Short-Term Effects
Tingling sensation, swollen or itchy throat, lips, and face, breathing difficulty, abdominal pain, nausea, vomiting, and diarrhea.

Long-Term Effects
High blood pressure, stomach ulcers, and liver and kidney complications.

Drug Interactions
May interfere with medication for hypotension, diabetes, seizues, iron supplements, immunosuppressants, and antibiotic or antifungal medicines.

When To See A Doctor
If a short-term symptom arises, worsens, becomes unbearable, or lasts longer than 24 hours.

10 Side Effects Of Peppermint Tea

Peppermint plants are primarily found in Europe and Asia, though some species also grow in Australia, South Africa, and South America. The plant typically blooms from July to August, and its dark green leaves are used to prepare the tea. This flavorful tea is made from dried peppermint leaves, offering a refreshing way to enjoy its medicinal properties. However, not everyone can enjoy this drink because of its potential side effects. Here are some of the peppermint tea side effects that you should be aware of:

1. Not Advisable For Individuals With Indigestion Problem

Individuals suffering from indigestion should consult their doctor before consuming peppermint tea. Anecdotal evidence suggests that it may interfere with their indigestion medication, causing adverse side effects. Peppermint oil is known to worsen indigestion in some people and cause unwanted side effects if taken alone (1). So, it is best to be cautious while making the tea if you have indigestion issues.

Fun Fact

Dried peppermint leaves were found in ancient Egyptian pyramids dating back to 1000 B.C.

2. Lowers Sugar Level

Peppermint tea can lower the blood sugar levels in the body. A study published in the Food & Function journal determined the effect of salicylic acid-treated peppermint infusions on diabetic rats. Researchers found that after 4 weeks, the rats had 25% lower blood sugar levels and 75% higher insulin levels (2). This suggests that this tea may interact with your diabetic drugs. So, individuals who are diabetic should avoid this tea or only take it after consulting their doctor.

3. Allergic Reactions

Side effects of peppermint tea can also result in developing allergic reactions (3), (4). Headache, unsteady feet and mouth sores are some of the symptoms of peppermint allergy. When you notice such symptoms, avoid taking the tea or consult a doctor Headache, dizziness, unsteady feet, skin irritation, and mouth sores are some of the symptoms of peppermint allergy. When you notice such symptoms, avoid taking the tea or consult a doctor.

4. Not Advisable For Gastro Esophageal Reflux Disease

Those with Hiatal Herniaⁱ  Bulging of the stomach into the chest cavity through an opening in the diaphragm. This can lead to heartburn and stomach pain. or Gastroesophageal Reflux Disease (GERD) should avoid peppermint tea. A study published in the Gasteroenterology Review journal found that patients with GERD consumed peppermint tea more frequently than healthy individuals. This suggests that peppermint tea may contribute to their symptoms (5). While some people get relief from GERD symptoms by drinking peppermint tea, others report worsening their symptoms leading to excess bloating and gas. Peppermint relaxes the esophageal sphincterⁱ  Muscles that surround the opening in the body such as the anus or stomach opening, responsible for the opening and closing of passages in the body. , which can result in stomach acids leaking into the esophagus (6).

5. Emmenagogue Effects

Peppermint oil has emmenagogue effects, which means that it might stimulate uterine blood flow and put pregnancy at risk (7). Though peppermint tea contains less amount of peppermint, it is better to avoid peppermint tea or consult your doctor before consuming a cup. Pregnant and lactating women should stay away from peppermint in all its forms to be safe.

6. Strong For Infants

Peppermint tea is considered to be very strong for small children and babies. Research found that peppermint oil may cause breathing difficulties and a burning sensation in the mouth (8) (9). It is better to consult your doctor before giving it to your infants and children. No matter the temptation, avoid giving even small doses of peppermint tea to your child.

7. Drug Interactions

Peppermint tea also interferes with some specific medications. Drugs taken for stomach acid, blood pressure, cyclosporine and diabetes, interact with peppermint tea and cause side effects (10). So, if you are on medication for any of these health issues, rather say no to peppermint tea.

8. Contamination

The Food and Drug Administration (FDA) does not give license for the production of herbal supplements and tea. So there is no guarantee that the peppermint tea you are consuming is free from contamination.

9. Stomach Disorders

One of the major side effects of peppermint tea is serious stomach upset. Anecdotal evidence suggests that diarrhea, nausea, vomiting, dehydration, heartburn, muscle pain, cramping, drowsiness, tremors, and a drop in heart rate are some of the side effects of the overconsumption of peppermint tea.

10. Oral Ulcers

A common side effect of peppermint tea is oral ulcers! Many doctors advise that people who get ulcers often should avoid peppermint tea. It is important to avoid it especially because it contains menthol that may aggravate the ulcer and cause further damage. A study published in the Contact Dermatitis journal examined 12 people who had mouth problems like a burning feeling, mouth sores, or irritation, caused by sensitivity to menthol and peppermint oil. Researchers found that 5 people were sensitive to either menthol or peppermint, and 4 with mouth sores were sensitive to both. After avoiding menthol and peppermint, 6 out of 9 people felt better. The study suggests that avoiding these substances can help improve mouth-related issues (9).

Quick Tip

While there are no established limits on consumption, you should stick to 1 to 2 cups of peppermint tea daily.

Peppermint tea is considered to be effective and safe when you consume it in moderation. However, if you are concerned about the adverse effects of peppermint tea, it is better to consult your doctor before drinking it. Keep reading to learn how to safely include peppermint tea in your diet.

How To Safely Consume Peppermint Tea

• Moderate Intake: Limit yourself to 1-2 cups of peppermint tea per day to avoid any side effects.
• Check For Allergies: Make sure you are not allergic to peppermint or menthol before consuming the tea. If your throat feels closed or stuffy, stop drinking the tea immediately and consult a doctor. 
• Avoid On An Empty Stomach: Drinking peppermint tea right after eating may help reduce the risk of stomach discomfort or acid reflux.
• Observe Reactions: If you feel any discomfort like heartburn or irritation, stop consuming it and consult a healthcare professional.

If you experience adverse effects from peppermint tea, there are other good options like chamomile, ginger, and lemon balm tea. These teas are known for their overall health benefits, but just like peppermint, they might cause reactions depending on your health and any allergies. It is best to try each one and see which works best for you.

Infographic: Major Side Effects Of Peppermint Tea

Peppermint tea is a refreshing herbal tea with a multitude of benefits. However, excess consumption of this tea may lead to several side effects. While we have covered all the negative effects of peppermint tea in the article, there are a few serious side effects of this herbal concoction that you must be aware of. Check out the infographic below to learn about the unexpected side effects of drinking peppermint tea.

Illustration: StyleCraze Design Team

Frequently Asked Questions

Is it OK to drink peppermint tea every day?

Yes, it is OK to drink 1-2 cups of peppermint tea every day. However, if you have any health issues or concerns, it’s a good idea to talk to a healthcare provider before making it a regular part of your diet. Peppermint tea benefits include an array of antibacterial, antiviral, and anti-inflammatory properties, but it’s better to be cautious.

Does peppermint raise blood pressure?

No, peppermint lowers systolic pressureⁱ  The measure of the pressure that blood exerts on the walls of arteries when the heart beats or expands and contracts. (11).

Is peppermint tea good for kidneys?

Peppermint tea may help promote kidney health. However, it is not recommended for people with kidney stones.

Illustration: Unexpected Side Effects Of Peppermint Tea

Image: Stable Diffusion/StyleCraze Design Team

Stop drinking mint tea and eating mint leaves in excess. Learn why it is not good for your health and how it affects your system by clicking on this video.

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Reviewer Author Editor Fact Checker

Tracy TredouxDipION, mBANT, CNHC, IFMCP

     

Tracy is a fully qualified nutritional therapist with 10 years of experience specializing in gut and immune health. She is a Functional Diagnostic Nutrition Practitioner and a certified Functional Medicine Practitioner from the Institute of Functional Medicine.

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Tanya ChoudharyHealth & Wellness Writer

 

Tanya is an ISSA certified Specialist in Fitness & Nutrition. She specializes in writing articles on ingredients that benefit skin, hair, and health. She believes in the right health and lifestyle practices and strives to promote the same to everyone around her.

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Ravi Teja TadimallaCo-Editor-in-Chief

Ravi Teja Tadimalla is a Co-Editor-in-Chief and a published author. He has been in the digital media field for over a decade. He graduated from SRM University, Chennai, and has a Professional Certificate in Food, Nutrition & Research from Wageningen University.

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Moksha is a health and wellness writer and a certified diet and nutrition coach. Her passion for science and writing has helped her excel in crafting evidence-based articles. Her previous experience in writing science-based research papers ensures that her articles are grounded in research and provide practical tips that are reader-focused.

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