Herbal teas have long been praised for their natural healing properties, offering support for everything from digestion to relaxation. However, while herbal teas are generally safe, mixing certain herbs together can lead to adverse interactions, reduce their effectiveness, or even cause harm. Whether you're an herbalist, tea lover, or just getting started with herbal remedies, it's crucial to understand which herbs should not be combined.
This article explores the herbal combinations to avoid, the science behind the risks, and how to enjoy herbal teas safely.
Panaprium is independent and reader supported. If you buy something through our link, we may earn a commission. If you can, please support us on a monthly basis. It takes less than a minute to set up, and you will be making a big impact every single month. Thank you!
Why Some Herbs Should Not Be Combined
Herbs contain powerful active compounds that can interact with each other — or with medications. When consumed together in tea, these interactions may:
-
Amplify or reduce the effect of one or both herbs.
-
Cause unwanted side effects (such as nausea, dizziness, or liver toxicity).
-
Create imbalances in the body (such as overstimulating the nervous system or disrupting digestion).
-
Interfere with medications like blood thinners, antidepressants, or blood pressure drugs.
Just because something is natural doesn't mean it's automatically safe in combination.
1. St. John’s Wort + Other Herbs That Affect Mood
Avoid mixing with:
-
Valerian
-
Kava
-
Passionflower
-
5-HTP
-
Ginseng
Why: St. John’s Wort is known for its antidepressant effects by affecting serotonin levels. When combined with other herbs that also influence the central nervous system (CNS), it can cause serotonin syndrome, excessive sedation, or overstimulation.
Risks: Confusion, muscle twitching, sweating, high blood pressure, and agitation.
2. Licorice Root + Diuretic or Blood Pressure Herbs
Avoid mixing with:
-
Dandelion
-
Horsetail
-
Hawthorn
-
Uva Ursi
-
Nettle
Why: Licorice root can raise blood pressure and retain sodium in the body. Combining it with herbs that act as diuretics or affect cardiovascular function may lead to electrolyte imbalances, water retention, or dangerously high blood pressure.
Risks: Headaches, swelling, fatigue, potassium depletion, arrhythmia.
3. Ginseng + Caffeine-Containing or Stimulating Herbs
Avoid mixing with:
-
Guarana
-
Yerba mate
-
Green or black tea
-
Ephedra (ma huang)
Why: Ginseng is a natural stimulant. When combined with other energizing herbs, it may overstimulate the nervous system, increase heart rate, and raise blood pressure.
Risks: Insomnia, anxiety, heart palpitations, nervousness.
4. Kava + Sedative or CNS-Depressant Herbs
Avoid mixing with:
-
Valerian
-
Hops
-
Passionflower
-
Skullcap
-
Chamomile (in large amounts)
Why: Kava is a strong relaxant that acts on GABA receptors in the brain. Mixing it with other sedatives may lead to excessive drowsiness, poor motor control, or liver strain.
Risks: Liver toxicity, impaired coordination, sleep disturbances.
5. Ginger + Blood-Thinning Herbs
Avoid mixing with:
-
Garlic
-
Ginkgo biloba
-
Turmeric
-
Willow bark
-
Feverfew
Why: Ginger has mild blood-thinning properties. When combined with other anticoagulant herbs, the effect may become too strong, increasing the risk of bruising or bleeding, especially before surgery or if you're taking blood-thinning medication.
Risks: Nosebleeds, heavy menstruation, easy bruising.
6. Senna + Other Laxative or Bitter Herbs
Avoid mixing with:
-
Cascara sagrada
-
Aloe vera (latex)
-
Rhubarb root
-
Buckthorn
-
Dandelion root (in large amounts)
Why: Senna is a potent stimulant laxative. Combining it with other laxatives or bitters can cause diarrhea, dehydration, and electrolyte imbalance.
Risks: Cramping, dehydration, dependence on laxatives, low potassium.
7. Echinacea + Immunostimulant Herbs (Long Term)
Avoid mixing long-term with:
-
Astragalus
-
Cat’s claw
-
Elderberry (in strong doses)
Why: While short-term use may enhance immune function, combining immunostimulants over long periods may overstimulate the immune system and potentially trigger autoimmune responses in susceptible individuals.
Risks: Autoimmune flare-ups, inflammation, fatigue.
8. Milk Thistle + Detoxifying or Liver-Acting Herbs
Avoid mixing with:
-
Dandelion root
-
Burdock root
-
Yellow dock
-
Oregon grape
Why: Milk thistle supports liver detoxification, but too many liver-stimulating herbs taken together can overload the liver or alter drug metabolism.
Risks: Nausea, liver enzyme fluctuation, reduced drug efficacy.
9. Peppermint + Acid-Reflux Triggering Herbs
Avoid mixing with:
-
Licorice (if using DGL-free form)
-
Citrus peels
-
Ginger (for some people)
Why: Peppermint relaxes the lower esophageal sphincter, which can worsen acid reflux or GERD symptoms, especially when combined with other reflux-inducing herbs.
Risks: Heartburn, indigestion, stomach upset.
10. Willow Bark + Any Herb with Blood-Thinning or Anti-inflammatory Action
Avoid mixing with:
-
Turmeric
-
Garlic
-
Ginkgo
-
Ginger
-
Meadowsweet
Why: Willow bark is a natural source of salicin (like aspirin). Combining it with other anti-inflammatory or anticoagulant herbs increases the risk of bleeding and stomach irritation.
Risks: Gastric ulcers, slow wound healing, easy bruising.
Herbal Tea Combinations That Are Safe and Effective
While some combinations are risky, many herbal blends work beautifully together. Here are a few examples of safe and effective pairings:
| Purpose | Safe Combinations |
|---|---|
| Sleep Aid | Chamomile + Lavender + Lemon balm |
| Immune Boost | Echinacea (short-term) + Elderberry + Ginger |
| Digestive Support | Fennel + Peppermint + Chamomile |
| Anti-Inflammatory | Turmeric + Ginger + Lemongrass |
| Stress Relief | Ashwagandha + Holy Basil + Licorice (short-term) |
Tips for Mixing Herbs Safely
-
Research Each Herb Thoroughly
Understand how each herb affects the body and what medications it may interact with. -
Limit to 2–3 Herbs Per Blend
Start with a small number of herbs to reduce the risk of interactions. -
Avoid Mixing Herbs with Similar Potency or Action
For example, don’t mix several strong sedatives or blood thinners. -
Use Professional Guidance
Consult with a trained herbalist or healthcare provider, especially if you’re pregnant, on medication, or have a chronic condition. -
Start With Low Doses
Even safe herbs can cause reactions in sensitive individuals. Always test a small amount first.
Conclusion
Herbal teas are powerful tools for healing, but not all herbs play well together. Just as with pharmaceuticals, combining certain herbs without proper knowledge can lead to unexpected or dangerous results. By avoiding the risky combinations outlined above and following safe blending practices, you can enjoy the full benefits of herbal teas — without the unwanted side effects.
When in doubt, less is more. Respect the power of plants.
References
-
Natural Medicines Comprehensive Database.
-
National Center for Complementary and Integrative Health (NCCIH) – https://nccih.nih.gov
-
Upton, R. (Ed.). (2010). American Herbal Pharmacopoeia
-
Mills, S., & Bone, K. (2013). Principles and Practice of Phytotherapy.
-
Blumenthal, M. (Ed.). (2003). The ABC Clinical Guide to Herbs.
Was this article helpful to you? Please tell us what you liked or didn't like in the comments below.
About the Author: Alex Assoune
Alex Assoune (MS) is a global health and environmental advocate. He founded Panaprium to inspire others with conscious living, ethical, and sustainable fashion. Alex has worked in many countries to address social and environmental issues. He speaks three languages and holds two Master of Science degrees in Engineering from SIGMA and IFPEN schools.
What We're Up Against
Multinational corporations overproducing cheap products in the poorest countries.
Huge factories with sweatshop-like conditions underpaying workers.
Media conglomerates promoting unethical, unsustainable products.
Bad actors encouraging overconsumption through oblivious behavior.
- - - -
Thankfully, we've got our supporters, including you.
Panaprium is funded by readers like you who want to join us in our mission to make the world entirely sustainable.
If you can, please support us on a monthly basis. It takes less than a minute to set up, and you will be making a big impact every single month. Thank you.
RELATED ARTICLES
Tags
Can You Take Oil of Oregano and Mullein Together? Complete Guide
Combining herbal remedies can enhance healing—but only when done correctly. Two widely respected herbs, oil of oregano and mullein, are commonly used for respiratory health, infections, and immune support. But is... Read More
Can I Take Ashwagandha and Oregano Oil Together? Complete Guide
Ashwagandha and oregano oil are two popular natural remedies, each praised for their distinct health benefits. Ashwagandha is best known for its adaptogenic and stress-reducing properties, while oregano oil is... Read More
What Herbs Should Not Be Mixed Together in Tea: Complete Guide
Herbal teas have long been praised for their natural healing properties, offering support for everything from digestion to relaxation. However, while herbal teas are generally safe, mixing certain herbs together can... Read More
When to Start Seeds Indoors in Zone 6: The Ultimate Guide
Living in USDA Hardiness Zone 6, which spans much of the central and eastern U.S., gives gardeners a moderately long growing season—typically from mid-April to mid-October. Most areas have an average... Read More
When to Start Seeds Indoors in Zone 4: Complete Guide
Zone 4 encompasses some of the coldest parts of the contiguous United States, with average minimum winter temperatures plunging to −30 °F and last spring frosts often hanging around June 1, according to Urban... Read More
When to Start Tomato Seeds Indoors in Zone 5b: Complete Guide
Tomatoes are among the most popular home garden crops—and for good reason. Their rich flavor, versatility in cooking, and rewarding yield make them a must-have for many gardeners. However, if... Read More
When to Start Pepper Seeds Indoors in Zone 5: Complete Guide
Growing your own peppers from seed is one of the most rewarding gardening experiences—especially in USDA Hardiness Zone 5, where the growing season is short and warm-weather crops need a head... Read More
When to Start Flower Seeds Indoors in Zone 5: Complete Guide
Starting flower seeds indoors is a smart way to get a head start on the growing season—especially in USDA Hardiness Zone 5, where winters are long and the growing window is... Read More
When to Start Herb Seeds Indoors in Zone 5: Complete Guide
Growing herbs from seed is an affordable and rewarding way to start your own herb garden. But in USDA hardiness zone 5, where winters are long and frosts linger into spring,... Read More
Is It Better to Grow Herbs from Seeds or Plants? Pros & Cons
Herbs are among the easiest and most rewarding plants to grow. Whether you're dreaming of fresh basil for homemade pesto or fragrant lavender for teas and crafts, the first big... Read More
When Can I Plant Herbs Outside in Pots? Complete Seasonal Guide
Planting herbs outside in pots is one of the most rewarding ways to start a garden. Whether you're growing basil for your pasta, mint for iced tea, or lavender for... Read More
Will Herbs Survive Winter in Pots? Complete Guide to Growing Herbs
Growing herbs in pots is a practical way to enjoy fresh, fragrant plants year-round—whether you're cooking in the kitchen or decorating your balcony. But when winter rolls around, many gardeners... Read More
Growing Herbs Indoors with Artificial Light: Complete Guide
Growing herbs indoors allows for fresh flavor and natural healing right at your fingertips, even when outdoor conditions are harsh or inconsistent. But one major challenge indoor gardeners face is... Read More
Herbs That Grow All Year Round Outside: Complete Perennial Guide
Fresh herbs are one of the easiest ways to add vibrant flavor and nutrition to meals, but many people assume herb gardening is limited to the warm growing season. The... Read More
Herbs That Grow in Winter Outside: Guide to Cold-Weather Gardening
When temperatures drop and gardens go dormant, many gardeners assume their herb-growing days are over until spring. But in reality, several hardy herbs can survive—and even thrive—outdoors during the winter... Read More
Growing Herbs from Seed Indoors in Winter: Complete Beginner’s Guide
Growing herbs from seed indoors during winter is a rewarding way to bring fresh greenery, flavor, and life into your home when the outdoor world is dormant. With the right... Read More
How to Grow Herbs Indoors: A Complete Guide for Year-Round Flavor
Growing herbs indoors is a simple and rewarding way to bring fresh flavor, fragrance, and greenery into your home. Whether you have a sunny windowsill or a tiny apartment kitchen,... Read More
How Close Can You Plant Herbs Together? Complete Guide
Herbs are some of the easiest and most rewarding plants to grow, whether in containers on a windowsill or a garden bed in your backyard. But one of the most... Read More
Flowers to Plant with Herbs in Pots: Complete Guide for Beginners
Growing herbs in pots is a rewarding and practical way to bring fresh flavors to your kitchen and fragrance to your garden. But what if you could boost the health... Read More
Which Herbs Should Not Be Planted Together? Complete Guide
Growing herbs is one of the most rewarding aspects of gardening. They’re compact, flavorful, and full of health benefits. But not all herbs make good neighbors. Just like people, some... Read More
What Herbs Grow Well Together in the Same Container? Complete Guide
Growing herbs in containers is a convenient and rewarding way to keep fresh flavors right at your fingertips. But when space is limited, many gardeners wonder: Can I grow different... Read More
Best Soil for Herbs in Pots: Complete Guide for a Thriving Herb Garden
Growing herbs in pots is a practical and rewarding way to cultivate fresh flavor at home. Whether you’re working with a sunny windowsill, a balcony, or a full patio, container... Read More
Ethical Harvesting: Foraging Examples That Respect Nature
In an era where sustainable living is more important than ever, foraging—gathering wild food and medicine from natural landscapes—offers a way to connect with the earth while reducing our ecological... Read More
REAL Wildcrafting Examples: Traditional and Modern Practices
Wildcrafting is the ancient art of harvesting wild plants from their natural habitats for food, medicine, and spiritual use. Long before the invention of agriculture or synthetic pharmaceuticals, people around... Read More
Wildcrafted vs Organic: What’s the Difference and Why It Matters
In an age of wellness trends and eco-conscious living, words like “wildcrafted” and “organic” are appearing on everything from herbal teas to skincare and supplements. But what do these labels... Read More
20 Best Wild Herbs for Cooking: Flavor from the Forest to Your Fork
Wild herbs aren’t just for medicine—they’re also a rich source of culinary flavor, often fresher and more potent than what you find in the grocery store. Foraging for wild herbs... Read More
Wildcrafting Herbs List: 20 Powerful Plants to Harvest Responsibly
Wildcrafting is the ancient practice of gathering herbs and plants from their natural environments for healing, spiritual, or culinary purposes. Unlike farming or commercial harvesting, wildcrafting emphasizes respect, sustainability, and... Read More
0 comments