Are Herbal and Fruit Teas Safe and Healthy?

Herbal and fruit teas are drinks made by steeping plant parts in hot water.

They are often called tisanes.

True tea comes from one plant, called Camellia sinensis.

Black tea, green tea, and oolong tea all come from this plant.

Herbal and fruit teas are different.

They can be made from flowers, leaves, roots, seeds, bark, or dried fruit.

• Chamomile flowers
• Peppermint leaves
• Ginger root
• Hibiscus flowers
• Rooibos leaves
• Dried fruit like apple, orange peel, or berries
• Rosehip
• Lemongrass

Because they contain no leaves from the tea plant, most herbal and fruit teas have little or no caffeine.

This makes them popular as a caffeine-free alternative to coffee or black tea.

Many people assume herbal teas are automatically safe because they are natural.

Natural does not always mean risk free.

A recent scientific review looked closely at the safety, toxicity, and regulation of herbal and fruit teas^[1].

The review found that these drinks are not held to the same global standards as conventional tea from Camellia sinensis^[1].

This means quality control can vary a lot between brands and countries^[1].

Issues can include inconsistent dosage, contamination, and unclear labeling^[1].

There is also concern about interactions between herbal teas and medications^[1].

Some plant compounds can affect how the liver processes drugs.

This matters most for people taking prescription medications regularly.

Plants contain natural chemicals called phytochemicals.

Many of these are helpful in small amounts, like antioxidants called polyphenols.

But some plant compounds can be toxic at high doses or in certain people.

The review points to a lack of standardization in phytochemical composition across herbal tea products^[1].

This means two boxes of the same tea, from different makers, may not contain the same amount of active compounds^[1].

Without consistent dosing, it is hard to know a safe amount to drink^[1].

Contamination is another concern raised in the review^[1].

Herbal ingredients can pick up heavy metals, pesticides, or mold toxins during growing, drying, or storage.

Because herbal teas are loosely regulated in many regions, this contamination may go undetected^[1].

Some herbs also contain compounds that can stress the liver or kidneys over long term, heavy use.

The review calls for long-term toxicology studies and pharmacovigilance systems, which are programs that track side effects over time, to build real safety profiles^[1].

How well the body absorbs plant compounds also depends on the food matrix, meaning the mix of other substances brewed alongside them.^[3] A study using simulated digestion found that polyphenols behaved differently depending on how they interacted with other compounds during digestion, changing how much stayed available for absorption rather than being broken down or bound up.^[3] This kinetic fingerprinting approach suggests that the same plant compound could have different bioavailability, or the amount that actually reaches the bloodstream, depending on what else is in the cup and how it was prepared.^[3]

A dietary exposure study of hibiscus sabdariffa calyces, the dried flower parts used to make hibiscus tea, sold in Ghanaian markets found measurable levels of heavy metals in the samples tested^[4].

The health risk assessment estimated that regular consumption could push heavy metal intake close to or above safety thresholds for some age groups^[4].

This adds real world evidence to concerns about contamination in herbal teas, since hibiscus is one of the most commonly consumed fruit teas worldwide^[4].

Processing methods can also change how safe or bitter an herbal tea tastes and behaves in the body.

A study on Eucommia ulmoides dark tea used metabolomics and molecular docking to track how fermentation transforms flavonoids, a class of plant compounds, during processing^[5].

Fermentation shifted the chemical makeup of the leaves and reduced bitterness while altering flavonoid structures, showing that how an herb is processed, not just what plant it comes from, can change its final chemical profile^[5].

Research on individual herbal teas is mixed in quality and depth.

Some, like chamomile and peppermint, have a long history of traditional use and generally good safety records in typical amounts.

Others have less research behind them, especially newer or exotic blends.

The 2026 review stresses that many herbal and fruit teas still lack large-scale clinical trials^[1].

Without these trials, claims about benefits or risks often rest on small studies, animal research, or tradition alone^[1].

The authors argue that closing this research gap is needed before herbal teas can be called scientifically validated functional beverages^[1].

A functional beverage is a drink believed to offer a health benefit beyond basic nutrition.

Until more data exists, it makes sense to treat strong health claims about herbal teas with some caution.

Some Lamiaceae herbs commonly used in teas, such as peppermint, lemon balm, and oregano, may offer more than just flavor.

A systematic review and meta-analysis of randomized clinical trials found that supplementing with Lamiaceae plants improved anthropometric measures like body weight, waist circumference, and body mass index in people with metabolic syndrome^[2].

This suggests some herbal tea ingredients could have measurable metabolic effects, though the trials mostly tested concentrated extracts or supplements rather than brewed tea, so it is unclear if a typical cup would offer the same benefit^[2].

Mentha aquatica, a mint relative sometimes used in herbal blends, was evaluated in an integrated phytochemical and pharmacological study using in vivo models^[6].

The plant showed measurable anti-inflammatory and pain-relieving effects, along with a favorable safety profile at tested doses^[6].

This adds to a small but growing body of research suggesting some mint family herbs commonly steeped in teas may offer real pharmacological activity beyond flavor, though animal studies like this one do not automatically translate to the same effect from a brewed cup in humans^[6].

You do not need to avoid herbal and fruit teas.

You can enjoy them more safely with a few simple habits.

• Buy from brands that test for contaminants like heavy metals and pesticides.
• Choose well-known herbs with a long safety history, such as chamomile, peppermint, ginger, hibiscus, or rooibos.
• Avoid drinking large amounts of any single herbal tea every day for months without a break.
• Check with a doctor or pharmacist before regular use if you take prescription medication.
• Be extra cautious during pregnancy, since many herbal teas are not well studied in pregnant people.
• Introduce new herbal teas one at a time, so you can notice any reaction.
• Store dried tea in a cool, dry place to limit mold growth.
• Watch for symptoms like stomach upset, headache, or skin reaction after trying a new tea.

Rotating different teas, instead of relying on one type daily, also spreads out exposure to any single plant compound.

This variety approach is a simple way to lower risk while research catches up^[1].

Some groups face higher risk from herbal and fruit teas than others.

• People taking regular prescription medications, due to possible herb-drug interactions^[1]
• Pregnant or breastfeeding people, since safety data is often limited
• People with liver or kidney conditions
• Young children, who are more sensitive to plant compounds
• People with known plant or pollen allergies

For these groups, checking with a healthcare provider before regular herbal tea use is a reasonable step.

This is especially true for teas made from less common or newly popular herbs.

Herbal and fruit teas can be a pleasant, low-caffeine part of a normal diet.

But they are not automatically risk free just because they come from plants^[1].

Better regulation, standardized dosing, and more clinical research would help clarify their true benefits and risks^[1].

Until then, moderate intake, variety, and buying from tested, reputable brands are sensible ways to enjoy these drinks.

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