Understanding Potential Side Effects of Lemongrass

Reading time:13 min

Published:April 4, 2025

Author:

Cymbiotika

Lemongrass is a staple in wellness routines, prized for its bright, citrusy aroma and its presence in everything from soothing teas to potent essential oils. You may have encountered it as a culinary herb or as a key ingredient in an aromatherapy blend designed to help you unwind after a long day. While it is widely celebrated for its refreshing qualities, it is equally important to understand how your body interacts with its concentrated compounds.

Introduction

At Cymbiotika, we believe that informed choices lead to better health outcomes. Understanding the potential side effects of lemongrass allows you to incorporate it into your lifestyle with confidence and care. This guide explores the common reactions, specific precautions for different groups, and why the quality and delivery of botanical extracts matter for your overall experience. By the end, you will have a clear picture of how to use this versatile herb safely while supporting your body’s unique needs.

What is Lemongrass?

Lemongrass, or Cymbopogon, is a tall, perennial grass native to tropical climates like Southeast Asia and Africa. It contains a variety of bioactive compounds, most notably citral, limonene, and geraniol. These compounds are responsible for the herb's distinct scent and are often the focus of its use in supplements and topical applications.

Most people interact with lemongrass in three main ways: as a culinary herb, as a brewed tea, or as a concentrated essential oil. In its whole-plant form, it provides minerals like iron and calcium. However, when it is distilled into an oil or used as a high-potency extract, the concentration of its active chemicals increases significantly. This concentration is where most discussions regarding side effects begin.

Understanding the Side Effects of Lemongrass

While many people enjoy lemongrass without any issues, it can cause reactions in some individuals. These effects typically vary based on how the herb is consumed—whether it is ingested, applied to the skin, or inhaled.

Digestive Sensitivities

When consumed as a tea or in supplement form, some individuals report mild digestive discomfort. This is often because the essential oils within the plant can be potent for the delicate lining of the stomach. For broader support related to digestion and formulation, explore Cymbiotika’s Gut Health range.

Nausea: For those with sensitive stomachs, the strong citrus oils may lead to a feeling of queasiness.
Increased Appetite: Lemongrass is sometimes noted for its ability to stimulate the digestive system, which may lead to a noticeable increase in hunger.
Increased Urination: It is often considered a natural diuretic. This means it may encourage the body to release excess fluid, leading to more frequent trips to the bathroom.

Skin Irritation and Sensitization

Lemongrass essential oil is highly concentrated. If applied directly to the skin without proper dilution, it can cause significant irritation. This is often referred to as contact dermatitis, which manifests as redness, itching, or a burning sensation.

Even when diluted, some people may experience sensitization. This happens when the skin becomes increasingly reactive to the oil over time. It is always best to perform a patch test on a small area of skin before applying lemongrass products more broadly.

Dizziness and Fatigue

In some cases, individuals who consume high amounts of lemongrass tea or extracts report feeling lightheaded or unusually tired. This may be linked to its impact on blood sugar or its naturally calming aromatic properties. If you find yourself feeling faint after consumption, it is a clear sign to reduce your intake and monitor how your body responds.

Key Takeaway: Most side effects of lemongrass are mild and dependent on the dose and method of use. Starting with a low amount helps you gauge your individual tolerance.

Who Should Exercise Caution?

While lemongrass is generally recognized as safe for culinary use, certain populations should be more mindful of its concentrated forms.

Pregnancy and Breastfeeding

Expectant mothers are generally advised to avoid large amounts of lemongrass, particularly in extract or tea form. Some research suggests that certain compounds in the herb, such as myrcene, could potentially impact fetal development in high doses or stimulate uterine activity. Because there is not enough definitive data to guarantee safety during pregnancy or while nursing, many healthcare providers recommend sticking to common culinary amounts only.

Individuals with Kidney or Liver Concerns

Because the body must process the compounds found in lemongrass through the liver and kidneys, those with pre-existing conditions in these areas should be cautious. The diuretic effect of lemongrass can put additional pressure on the kidneys. Always consult with a healthcare professional if you have concerns about how a botanical extract might affect your organ function.

Blood Sugar Management

Lemongrass may have an effect on how the body manages glucose. For most people, this is a neutral or positive trait. However, if you are already taking steps or medications to lower your blood sugar, adding concentrated lemongrass could cause your levels to dip too low. This state, known as hypoglycemia, can lead to shakiness, confusion, and fatigue.

Respiratory Sensitivity

When used in a diffuser, the strong scent of lemongrass can be overwhelming for those with sensitive lungs or respiratory challenges. If you find yourself coughing or experiencing shortness of breath when the oil is in the air, it is best to discontinue use or significantly reduce the concentration.

The Science of Bioavailability and Botanical Safety

A common mistake in the supplement world is assuming that "more is better." At Cymbiotika, we approach formulation differently. We focus on bioavailability, which is the measure of how much of a substance actually enters your bloodstream and becomes available for use by your cells. For a deeper explanation of this concept, read why supplement studies can produce confusing results.

When you consume a standard dried herb, your digestive system has to work hard to break down the plant fibers and extract the beneficial compounds. Much of the "good stuff" may never make it past the gut. Conversely, highly concentrated extracts that lack a proper delivery system can overwhelm the liver or irritate the stomach lining because they are released all at once.

Why Delivery Matters

The way an ingredient is delivered changes how your body reacts to it. For example, liposomal delivery—which wraps nutrients in a phospholipid bilayer (a protective fat bubble similar to your own cell membranes)—allows for a slower, more controlled release. This can reduce the likelihood of the "flash" of side effects that sometimes comes with raw, unprotected extracts. Learn more about how liposomal delivery works.

By focusing on high-quality sourcing and advanced delivery mechanisms, we ensure that the body can use what it needs without the unnecessary stress often caused by low-quality fillers or poorly designed formulations.

Interactions with Medications

Lemongrass doesn't just act on its own; it can interact with other substances you may be taking. Understanding these interactions is a vital part of a safe wellness routine.

Diuretics: Since lemongrass has natural diuretic properties, taking it alongside prescription water pills may lead to dehydration or an imbalance in electrolytes.
Chemotherapy: Some compounds in lemongrass may interfere with the effectiveness of certain chemotherapy treatments. If you are undergoing medical treatment, always clear new supplements with your oncology team.
Blood Sugar Medications: As mentioned, the glucose-lowering potential of lemongrass can compound the effects of insulin or other similar medications.

Myth: Natural herbs are always safe and cannot interact with medicine.
Fact: Bioactive botanical compounds are powerful and can influence how medications are metabolized or how they function in the body.

How to Incorporate Lemongrass Safely

If you are interested in the benefits of lemongrass but want to avoid potential side effects, a measured approach is best. Consistency and quality are more important than high potency.

Start with a Patch Test

If using lemongrass topically, mix one drop of essential oil with a teaspoon of a carrier oil (like coconut or jojoba). Apply it to the inside of your elbow and wait 24 hours. If no redness or irritation occurs, it is likely safe for you to use in small amounts.

Monitor Your Dosage

If you are drinking lemongrass tea, start with one cup a day. Notice how you feel over the next few hours. Do you feel energized, or do you feel a bit shaky? Listening to these subtle cues from your body is the best way to find your "sweet spot."

Choose High-Quality Sources

Not all lemongrass products are created equal. Many low-cost essential oils are "extended" with synthetic chemicals that increase the risk of skin reactions. Similarly, supplements that use harsh chemical solvents for extraction can leave behind residues that irritate the gut.

We prioritize transparency and purity in everything we create. Whether you are looking at our Liposomal Vitamin C for immune support or our Magnesium Complex for relaxation, you can trust that every ingredient is third-party tested and free from unnecessary fillers. Applying this same standard to your lemongrass sourcing will greatly improve your experience.

Stay Hydrated

Because of the diuretic effect of this herb, it is important to drink plenty of plain water throughout the day. This helps your kidneys process the plant's compounds and prevents the dehydration that can sometimes lead to headaches or dizziness.

Step-by-Step: Adding a New Botanical to Your Routine

Step 1: Research the Source / Ensure the product is organic, non-GMO, and free from synthetic additives.
Step 2: Check for Interactions / Review your current medications and consult your healthcare provider if you have underlying health concerns.
Step 3: Begin with the Smallest Dose / Use half the recommended amount for the first few days to see how your body responds.
Step 4: Observe and Adjust / Keep a simple log of any changes in your energy, digestion, or skin health.
Step 5: Prioritize Bioavailability / Look for formulations designed for absorption rather than just high milligram counts.

Common Misconceptions About Lemongrass

There are several myths surrounding the safety of lemongrass that can lead to confusion. Clearing these up helps you make more informed decisions for your health.

"Lemongrass tea is just flavored water."
While it is a beverage, the hot water extracts significant amounts of citral and other bioactive oils. It should be treated with the same respect as any other herbal supplement.

"If it's organic, I can't be allergic to it."
Organic refers to how the plant was grown, not how your immune system reacts to it. It is entirely possible to have an allergy to an organic plant. Always remain observant when trying something new.

"The side effects only happen if you eat it."
This is a common mistake. Topical application and inhalation (aromatherapy) can also cause systemic effects or localized irritation. The skin is your largest organ, and it absorbs much of what you put on it.

The Importance of Transparency in Wellness

At the heart of any wellness journey is trust. You need to trust that what you are putting into your body is exactly what is on the label, and nothing else. Many supplement companies hide behind "proprietary blends" that make it impossible to know how much of an ingredient like lemongrass you are actually getting.

We believe in radical transparency. We provide clear information about our sourcing and our manufacturing standards. When you know exactly what you are taking, you can better understand how your body reacts. This empowerment is what allows you to build a routine that actually fits your life.

Bottom line: Understanding the side effects of lemongrass isn't about fear; it's about respect for the potency of nature and making sure your wellness routine supports your long-term health.

Finding Balance in Your Routine

Lemongrass is a wonderful gift from the natural world, offering a sensory experience that can brighten your mood and support your daily rituals. However, like any powerful botanical, it requires a thoughtful approach. By staying aware of how it interacts with your unique biology—and by prioritizing high-bioavailability formulations—you can enjoy the best of what it has to offer while minimizing risks.

If you find that lemongrass isn't the right fit for you due to sensitivities, don't be discouraged. There are many other botanicals and minerals that can support your goals for energy, digestion, and relaxation. Explore options across the Healthy Aging & Recovery collection as you consider which approach best fits your routine.

"Wellness is not a destination, but a series of informed choices made every single day."

Our mission is to give you the tools and the knowledge to make those choices with clarity. Whether you are just starting to explore herbal extracts or you are looking to refine a complex supplement stack, we are here to support your journey with science-forward, transparent solutions.

If you are unsure where to start or which products might best support your specific wellness goals, we invite you to take our Health Quiz. It is a simple way to get personalized recommendations based on your unique needs and lifestyle.

FAQ

Can lemongrass cause a skin rash?

Yes, lemongrass essential oil is a known skin irritant if used without proper dilution. It can cause contact dermatitis, which usually appears as redness, itching, or small bumps. Always mix it with a carrier oil and perform a patch test before wider use.

Is it safe to drink lemongrass tea every day?

For most healthy adults, one to two cups of lemongrass tea daily is considered safe. However, because it has diuretic properties and may lower blood sugar, you should monitor your body's response. If you feel dizzy or notice increased heart rate, it is best to reduce your intake. For additional guidance on how formulation and timing can affect absorption, review this guide to increase vitamin absorption.

Does lemongrass interact with any medications?

Lemongrass may interact with diuretics, blood sugar medications (like insulin), and certain chemotherapy drugs. It can enhance the effects of these medications, potentially leading to dehydration or low blood sugar. Consult with your doctor before adding lemongrass extracts to your routine if you take prescription meds.

Should I avoid lemongrass if I am pregnant?

Many healthcare professionals advise avoiding concentrated lemongrass, such as essential oils or strong teas, during pregnancy. Some of its compounds may stimulate uterine activity or affect fetal development in high doses. It is generally safest to stick to small amounts used in cooking.

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Table of Contents

Introduction

What is Lemongrass?

Understanding the Side Effects of Lemongrass

Who Should Exercise Caution?

The Science of Bioavailability and Botanical Safety

Interactions with Medications

How to Incorporate Lemongrass Safely

Step-by-Step: Adding a New Botanical to Your Routine

Common Misconceptions About Lemongrass

The Importance of Transparency in Wellness

Finding Balance in Your Routine

FAQ

Dive deeper

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Frequently searched

Recommended

Liposomal Advanced Creatine

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What is Lemongrass?

Understanding the Side Effects of Lemongrass

Who Should Exercise Caution?

The Science of Bioavailability and Botanical Safety

Interactions with Medications

How to Incorporate Lemongrass Safely

Step-by-Step: Adding a New Botanical to Your Routine

Common Misconceptions About Lemongrass

The Importance of Transparency in Wellness

Finding Balance in Your Routine

FAQ

Frequently searched

Recommended

Liposomal Advanced Creatine

Liquid Colostrum

Liposomal Elderberry