Herbal Teas: Know the Risks So You Can Enjoy the Benefits
Many tea drinkers enjoy the benefits of herbal teas, including the growing range of flavors, ingredients, and blends. Such teas add freshness, originality, subtlety, and nutritional value to tea drinkers. Many tea drinkers also assume that they are receiving the health benefits of herbal tea.
Yet an important question to ask is, “are herbal teas good for you?” This article addresses the risks of herbal teas and aims to answer that question.
But be warned, the answer is cautionary. The downbeat note is, do you know what you’re drinking and how it affects your body?
- What is in herbal tea?
- What does the research say about herbal tea?
- Is the information about it accurate?
- What are the dangers of herbal tea?
- How can you reduce the risks of herbal tea?
What is in Herbal Tea?
Of course, the obvious answer is herbs, the mild, aromatic, and natural harvests from plants that people consume.
An example is a herb with a lovely name, belladonna, which has a long therapeutic history. The belladonna flower is a herb from the same family as tomatoes, potatoes, and tobacco.
Belladonna’s uses include treating asthma, pneumonia, indigestion, and muscle weakness. It can relieve headaches, irritable bowel syndrome, menopausal symptoms and relax blocked airways.
Yet there’s a common, less enchanting, name for belladonna: deadly nightshade.
The Belladonna flower, in very low doses, has medicinal properties but is fatal in higher quantities. It’s a very poisonous plant, containing up to 20 different and powerful alkaloids.
This example demonstrates the most significant risk of herbal teas; the same plant can be medicinal and harmful, depending on the dose.
Obviously, no tea brand offers a “Belladonna Bedtime” (Product pitch: You’ll sleep forever!), but most tea lovers are surprised by the dangers many common herbs used in tea can carry.
The very fact that many herbal teas have proven health benefits is, in and of itself, a warning.
Such facts are cautionary because it means the herbs interact with your body, and those interactions occur at the neurological and chemical levels. The compounds in herbal tea are not inert, and the medical benefits such herbs provide come from their powerful chemical impacts.
This realization gives you a new perspective on common herbal teas. This includes tisanes such as spearmint, ginseng, hibiscus, St. John’s wort, chamomile, valerian, lavender, lemongrass, and others.
Take, for example, spearmint, ginseng, hibiscus, St. John’s Wort, and ginkgo.
- Spearmint is healthy in itself but can affect kidney functions when mixed with various medications.
- The benefits of ginseng include an increase in stamina and concentration. Yet, it can reduce the effectiveness of anti-clotting medications (blood thinners) and cause bleeding in post-menopausal women.
- Hibiscus lowers blood pressure by around 7 points. Yet, it negatively affects estrogen levels and can produce hallucinations.
- The benefits of St. John’s Wort include improving depression and mood disorders. Yet, the herb can cause headaches, nausea, dizziness, and dry mouth. It may also make you more likely to get sunburned.
- Ginko can help fight inflammation. Yet, it can thin your blood and cause bleeding.
Your body doesn’t distinguish between a herb or a drug; too much herbal tea can be bad for you.
(Valerian has more than 500 potential interactions, so you should have a drug screen for it. )
What Does Research Say About Herbal Tea?
Research examining the kinds of herbal plants used in tisanes is not pervasively negative. Yet, it is packed with cautionary examples and too many red flags to ignore. The benefits of drinking herbal tea are widely publicized; however, the risks are less so.
What Are The Dangers of Herbal Tea?
Consumers often assume “all natural” remedies are safe. This is not the case; many herbal plants can be detrimental to your health.
For example, WebMD cautions consumers about five risky herbal supplements:
- St. John’s Wort,
- Chaparral, and
Even herbal teas that you assume to be gentle and mild can have powerful impacts in larger doses. For example, chamomile is assumed to be gentle; it is an effective and calming nighttime tea.
Chamomile has been used since the dynasties of Ancient Egypt for its medicinal properties. Today, according to estimates, one million cups of chamomile tea are consumed daily in the United States.
The health benefits of chamomile tea include:
- easing digestion,
- anti-inflammatory properties,
- antibacterial properties,
- reducing stress, and
- soothing depressive impacts.
Amid such a broad spectrum of benefits, it’s easy to understand why few people ask: is chamomile tea safe? Is drinking too much chamomile tea bad for you?
Calamine tea’s side effects are serious. They include risks of bleeding, severe drowsiness if mixed with alcohol, and can be dangerous during pregnancy.
Herbal Tea Can Interact With Medications
Herbal teas’ interactions with medications are largely unknown to the layperson. Most people don’t know or understand the interactions between herbal teas and common prescription drugs.
Yet many of the adverse effects of herbal tea come from interactions with medications. For example, blood thinners, anti-coagulants, and aspirin can cause liver and kidney damage when combined with herbal teas.
The side effects of herbal teas interacting with your medication can be life-threatening. Therefore, it is extremely important to inform your physician what herbal teas you consume.
A Mayo Clinic report states herbal compounds caused 1-in-5 deaths from non-ailment-related liver failure. This figure has doubled in ten years; it’s correlated with the growing popularity of herbal teas.
Warfarin is a blood thinner and leading medication for reducing blood clots. If you are taking it, you must be careful drinking herbal tea. Certain tisanes (e.g., Ginseng tea) raise the likelihood of severe bleeding. Since ginseng may cause trouble sleeping, do not take it near bedtime, advises WebMD. Ginseng should not be used for long periods.
Valerian tea benefits you by acting as an excellent sedative and sleep aid. Owing to these properties, many mass-market tea brands promote valerian tea for sleep. They often offer enticing blends (e.g., DavidsTea, Valerian Nights).
Yet physicians and medical professionals warn of the many dangers of valerian root tea. Valerian tea acts much like a medical anesthetic; therefore, individuals should get specific advice before consuming it.
Healthcare professionals also suggest avoiding using valerian tea with many medical prescriptions. They also advise discontinuing long-term use. Stopping Valerian tea consumption for two weeks before any surgical treatment is recommended, and women should avoid it during pregnancy.
This statement is commonplace in reviews of valerian:
“However, [this and several other herbs] are powerful drugs that should be used only under the consultation of a medical professional, not used casually as a beverage.”
Yet, not one of the more than 500 ads for valerian root tea on Amazon mentions the risks.
Misleading and False Claims Add Complexity
The facts are troubling.
The tea products you buy are often falsely labeled. Frequently herbal tea contains unlisted or misstated ingredients. Tea and herbal blends typically aren’t tested, and often unsupported claims are made about the blends.
Many regulatory and legal gaps exist from herbal production through to distribution. These gaps provide many opportunities for producers and retailers to engage in fraud and cut corners.
Figures like these matter:
- 14-33% of tea products sampled were mislabeled (2013 study in the United States)
- Ingredients were authenticated in fewer than half the tea in DNA barcoding tests (2013 study in the United States)
- 20% of tea products contained unlisted fillers like rice and soy (2013 study in the United States)
- Only 21% of tested herbals sold in CVS, GNC, Walmart, and Target were accurately labeled (2015 study in the United States)
- 24% of “herbal” imports contained prescription drugs (2017 study conducted in Australia)
- 80% did not follow labeling requirements (2017 study conducted in Australia)
In 2019, Scott Gottlieb, MD and FDA commissioner, said, “Health fraud scams prey on vulnerable populations, waste money, and often delay proper medical care.”
How You Can Reduce The Risks of Herbal Tea
You can take the following five steps to reduce the risks of herbal tea while still enjoying its benefits.
Buy From Reputable Brands
Buy herbal teas from companies with a reputation for offering high-quality tea blends. Tea businesses that make outstanding caffeinated whole leaf teas blends are most likely to make exceptional herbal blends.
Generally, herbal tea specialists highlight what makes their product premium, fully showcase its features (including risks) to differentiate their product in the market.
Check Where the Product Were Sourced
Take the time to examine where your herbal tea ingredients were sourced. Sellers often brand products with certifications (e.g., Fair Trade, Rainforest Alliance, The Union for Ethical BioTrade).
These certifications ensure consumers can trust in product integrity. Ingredients are sourced from vetted growers through collaborative relationships.
You should check for product testing. Such testing proves the herbal tea meets the legal requirements and the brand’s claims. Lab testing herbal tea can authenticate the supply chain and ensure your safety. If the ingredients are not listed with evidence of authenticity, why take any risk?
Think Belladonna, Not Tomatoes
Herbal does not mean gentle and safe. Don’t discount the powerful impacts of plants used in tisanes.
Consumers can access research to investigate the impact herbal tea may have on them. Sources like PubMed make it easy for consumers to check the basics of drug interactions. Such online sources also provide information about side effects and dosages.
Keep Your Physician Informed
Regular consumption of herbal tea with a dominant ingredient is a medication. Share this information with your physician to be safe.
It is wise to assume that it is not ok to mix herbal teas and medicine.
Be Cautious of Herbal Dietary Supplements
Be wary of herbal dietary supplements and extracts – including green tea compounds.
Miracle-working, celebrity-rave, pseudo-medication teas have one proper place. In a ziplock bag – that you take to a drug disposal site.