Benefits of Lemongrass Tea: A Complete Guide to What the Research Shows

Lemongrass tea has moved well beyond its roots in Southeast Asian and West African culinary traditions to become one of the more widely studied herbal teas in nutrition research. That attention is earned — the plant contains a meaningful collection of bioactive compounds, and scientists have spent the past two decades investigating how those compounds interact with human physiology. What the research shows is genuinely interesting. What it doesn't show — yet — is a simple story.

This guide covers what lemongrass tea actually contains, how those compounds work in the body, what the evidence supports (and how strongly), and which individual factors shape whether any of that matters for a particular person.

What Lemongrass Tea Is — and Where It Fits in Herbal Teas

Within the broader world of herbal and specialty teas, lemongrass occupies a specific niche. Unlike green, black, or white tea, lemongrass tea contains no Camellia sinensis — meaning it is naturally caffeine-free and carries none of the catechins or L-theanine associated with true teas. It belongs instead to the category of tisanes: infusions made from plant material other than tea leaves.

Lemongrass (Cymbopogon citratus and related species) is a tall tropical grass whose stalks, leaves, and roots are used in cooking, traditional medicine, and herbal preparations. When brewed as a tea — typically from dried or fresh stalks — it produces a pale yellow infusion with a bright, citrus-like flavor that comes primarily from citral, its dominant volatile compound.

Understanding this distinction matters when evaluating the research. Studies on lemongrass are not interchangeable with studies on green tea, chamomile, or other herbals. Each plant has its own phytochemical profile, its own mechanisms, and its own body of evidence.

The Active Compounds in Lemongrass Tea

The nutritional and biological interest in lemongrass centers on its phytochemicals — naturally occurring plant compounds that interact with biological processes. The most studied include:

Citral (a mixture of geranial and neral) is the dominant component of lemongrass essential oil and gives the plant its characteristic lemony scent. Research has investigated citral for its antioxidant and antimicrobial properties, primarily in laboratory and animal models.

Chlorogenic acid and other polyphenols are present in lemongrass and belong to the same broad class of compounds studied extensively across fruits, vegetables, and other herbal teas. Polyphenols function as antioxidants — they help neutralize free radicals, which are unstable molecules that can damage cells when they accumulate.

Flavonoids including luteolin and isoorientin have been identified in lemongrass extracts. These compounds have been studied for their potential anti-inflammatory activity — meaning they may interact with pathways the body uses to regulate its inflammatory response. Most of this work is in cell-based or animal studies, which means it's informative but not directly transferable to human outcomes.

Manganese appears in modest amounts in brewed lemongrass tea. Manganese is a trace mineral involved in enzyme function, bone development, and antioxidant defense through its role in the enzyme superoxide dismutase (MnSOD).

It's worth being clear about what "brewed tea" delivers versus what concentrated extracts or essential oils contain. Most human studies — and most traditional uses — involve brewed infusions, not standardized extracts. Concentration varies significantly based on the amount of plant material used, brewing time, water temperature, and whether fresh or dried lemongrass is used.

What the Research Generally Shows 🔬

Antioxidant Activity

The most consistently documented property of lemongrass in laboratory settings is antioxidant activity. Multiple in vitro studies (conducted in test tubes or cell cultures) have confirmed that lemongrass extracts can neutralize free radicals measurably. This finding is reasonably well-established at the biochemical level — it reflects the real presence of polyphenolic compounds with antioxidant capacity.

What's less clear is how this translates to a brewed cup of tea consumed by a person. Bioavailability — how well the body absorbs, processes, and uses these compounds — depends on individual digestive chemistry, the food matrix, and how the tea is prepared. These factors are not yet well-characterized for lemongrass specifically.

Digestive Comfort

Traditional use of lemongrass tea across multiple cultures has centered heavily on digestive support — for bloating, stomach discomfort, and nausea. Some small human studies and a larger body of animal research have examined lemongrass's effect on gastrointestinal function. The proposed mechanism involves smooth muscle relaxation and potential antimicrobial effects on gut flora.

Evidence here is preliminary. The studies conducted in humans are generally small, short-term, and lack the rigor of large randomized controlled trials. That doesn't mean the traditional use is wrong — it means the scientific picture isn't yet complete enough to draw firm conclusions.

Antimicrobial Properties

Citral and other volatile compounds in lemongrass have shown antimicrobial activity against various bacteria and fungi in laboratory settings. This research is fairly extensive and reasonably consistent. However, laboratory conditions are highly controlled environments that don't replicate what happens when a dilute brewed tea passes through a complex human digestive system. This area warrants continued research but should not be extrapolated to clinical antimicrobial claims.

Inflammation-Related Pathways

Several compounds in lemongrass — particularly luteolin and isoorientin — have been studied for their potential effects on inflammatory signaling pathways in cell and animal models. These are promising leads for researchers, but the evidence is largely preclinical. Human clinical trials examining lemongrass tea specifically for inflammatory markers are limited and generally small-scale.

Blood Sugar and Lipid Research

A smaller body of animal research has investigated lemongrass's possible effects on blood glucose and cholesterol levels. These studies have produced some interesting results in rodent models, but animal studies often do not translate directly to human physiology. This remains an active but early-stage area of inquiry.

The Variables That Shape Individual Experience 🌿

Even where the research on lemongrass is most consistent, what it means for any given person depends heavily on individual factors.

Preparation method influences what a cup actually contains. Fresh stalks, dried leaves, commercially prepared tea bags, and concentrated liquid extracts will all deliver different amounts of active compounds. Steeping time and water temperature also affect extraction — a two-minute steep in warm water produces a different chemical profile than a ten-minute steep in near-boiling water.

Baseline diet matters considerably. Someone whose diet is already rich in diverse polyphenols from fruits, vegetables, and other plant foods is adding to an existing foundation. Someone whose polyphenol intake is low may see a more meaningful relative change from regular herbal tea consumption — though this isn't specific to lemongrass and applies broadly to plant-based dietary additions.

Health status and medications are significant considerations. Lemongrass has shown potential effects on liver enzyme activity in some research, which could theoretically interact with how certain medications are metabolized. Anyone taking medications — particularly those processed by the liver — would benefit from discussing herbal tea consumption with their prescribing physician or pharmacist. This is not a reason to avoid lemongrass tea, but it is information worth having.

Pregnancy is a specific context worth noting. Lemongrass is sometimes included on lists of herbs to approach cautiously during pregnancy, largely because of traditional concerns and the limited safety data available for concentrated preparations. This is an area where individual medical guidance matters more than general information.

Quantity consumed is a variable the research rarely standardizes. One cup occasionally is a very different exposure than several cups daily. Most adverse effects associated with lemongrass — where they appear at all — have been linked to unusually high consumption or concentrated supplement forms, not moderate tea drinking.

Subtopics Worth Exploring Further

The specific questions readers bring to lemongrass tea tend to cluster around a few distinct areas, each of which goes deeper than what a single overview can cover.

Lemongrass tea and digestion is probably the most active area of real-world interest and traditional use. The mechanisms proposed — including effects on gut motility and gastric acid — connect to established digestive physiology, even if the clinical evidence specific to lemongrass is still building.

Lemongrass tea and sleep or relaxation is a related area worth examining separately. The caffeine-free nature of the tea makes it a practical evening option for people sensitive to stimulants, and some research has explored whether certain compounds in lemongrass may have mild sedative-adjacent effects — though this evidence is early-stage.

Antioxidant comparisons across herbal teas is a question that comes up naturally when readers are trying to decide which herbal teas to incorporate. Lemongrass, hibiscus, rooibos, and chamomile all deliver antioxidant compounds, but through very different phytochemical profiles. Understanding how these compare — rather than assuming one is simply "better" — is a more useful framework.

Safety, side effects, and who should be cautious deserves its own focused treatment. Most people who drink lemongrass tea in normal amounts tolerate it well, but there are populations — including those on certain medications, those with specific liver conditions, and pregnant individuals — for whom more careful consideration is appropriate. General safety information is useful; individual safety is a conversation for a qualified healthcare provider.

Lemongrass tea versus lemongrass essential oil versus supplements is a distinction that matters practically. The concentrations of active compounds differ enormously across these forms, and the research on one form doesn't automatically apply to another. This is a common source of confusion when readers encounter health claims that may have originated from essential oil or extract studies rather than from brewed tea research.

What lemongrass tea offers is a well-established tradition of use, a genuine phytochemical profile worth scientific attention, and a growing body of research that — while still developing — points to mechanisms that deserve continued investigation. Whether that translates into meaningful effects for any specific person depends on variables that no general overview can account for: individual health status, dietary context, how the tea is prepared, how much is consumed, and what else is happening in that person's life and body.