Medical Disclaimer
The information in this article is for educational purposes only and is not intended as medical advice. While adaptogens are generally considered safe for most people when used appropriately, they may not be suitable for everyone. Always consult with a healthcare provider before starting any new supplement, especially if you have existing health conditions, are pregnant or nursing, or are taking medications. This article references scientific studies and academic research, but individual responses to adaptogens can vary. Never use adaptogens as a replacement for prescribed medications without consulting your healthcare provider.
In our fast-paced modern world, stress and anxiety have become increasingly common experiences. According to the American Psychological Association, 78% of adults report experiencing significant stress in their lives. While conventional treatments like therapy and medication are effective, many people are turning to natural solutions that have been used for centuries in traditional medicine systems. Among these natural remedies, adaptogens stand out for their unique ability to help the body resist and adapt to various stressors.
This comprehensive guide explores the science behind adaptogens, their mechanisms of action, the most effective adaptogenic herbs for stress and anxiety, and how to incorporate them safely into your wellness routine.
What Are Adaptogens?
The term "adaptogen" was first coined in 1947 by Dr. Nikolai Lazarev, a Soviet scientist who was studying substances that could help the body adapt to physical and psychological stress. Later, Dr. Israel Brekhman established the formal definition of adaptogens as substances that:
- Are non-specific (they help the body resist a wide range of stressors: physical, chemical, and biological)
- Have a normalizing effect (they help restore balance regardless of the direction of change from physiological norms)
- Are non-toxic when used in appropriate therapeutic doses
In essence, adaptogens work like a thermostat for your stress response. When stress hormones are too high, adaptogens help lower them; when they're too low, adaptogens help raise them. This bidirectional effect is what makes adaptogens unique compared to other substances that might simply stimulate or sedate the body.
The Science Behind Adaptogens
To understand how adaptogens work, it's helpful to first understand the body's stress response. When we encounter a stressor, our bodies go through what's called the General Adaptation Syndrome (GAS), which consists of three phases:
- Alarm Phase: The initial "fight-or-flight" response where stress hormones like cortisol and adrenaline surge
- Resistance Phase: The body attempts to adapt to the stressor and return to normal
- Exhaustion Phase: If stress continues too long, the body's resources become depleted, leading to burnout and various health problems
Adaptogens work primarily by affecting the hypothalamic-pituitary-adrenal (HPA) axis, which is the body's central stress response system. Research has shown that adaptogens can:
- Modulate the release of stress hormones like cortisol
- Support the function of the adrenal glands, which produce stress hormones
- Regulate neurotransmitters involved in the stress response
- Enhance cellular energy production and efficiency
- Protect cells from oxidative stress caused by chronic stress
- Support immune function, which is often compromised during chronic stress
A landmark study published in the journal Pharmaceuticals in 2010 by Panossian and Wikman proposed that adaptogens work at the molecular level by affecting heat-shock proteins and other stress-activated cellular pathways. This helps cells maintain homeostasis (balance) even under stressful conditions.
Top Adaptogens for Stress and Anxiety
While there are dozens of herbs classified as adaptogens, the following have the strongest scientific evidence specifically for stress and anxiety relief:
1. Ashwagandha (Withania somnifera)
Often called "Indian ginseng," ashwagandha is one of the most well-researched adaptogens for anxiety and stress.
Scientific Evidence: A 2019 double-blind, randomized, placebo-controlled trial published in Medicine found that participants taking ashwagandha extract experienced a significant reduction in stress and cortisol levels compared to those taking a placebo. The study showed a 44% reduction in perceived stress scores and a 27.9% reduction in cortisol levels.
How It Works: Ashwagandha contains compounds called withanolides that appear to mimic the structure of GABA, a neurotransmitter that inhibits excessive neuronal activity. It also helps regulate cortisol levels and supports adrenal function.
Typical Dosage: 300-600 mg of standardized extract (containing 5% withanolides) once or twice daily.
Best For: General anxiety, stress-induced insomnia, and stress-related fatigue.
2. Rhodiola Rosea
This herb grows in cold, mountainous regions of Europe and Asia and has been used for centuries to combat fatigue and enhance mental performance under stress.
Scientific Evidence: A 2018 systematic review published in Phytotherapy Research analyzed 36 studies on Rhodiola and concluded that it shows anti-fatigue and anti-stress effects, with potential benefits for mental performance during stressful conditions. A specific study in the International Journal of Psychiatry in Clinical Practice found that Rhodiola extract significantly reduced symptoms of generalized anxiety disorder after 10 weeks.
How It Works: Rhodiola contains active compounds called rosavins and salidrosides that help balance neurotransmitters like serotonin and dopamine. It also appears to reduce the secretion of cortisol during stressful situations.
Typical Dosage: 200-600 mg daily of a standardized extract (containing 3% rosavins and 1% salidroside).
Best For: Stress-related fatigue, burnout, and anxiety with cognitive symptoms (brain fog, poor concentration).
3. Holy Basil (Ocimum sanctum)
Also known as Tulsi, holy basil is revered in Ayurvedic medicine as an "elixir of life" and is particularly effective for stress-related anxiety.
Scientific Evidence: A 2015 study published in the Journal of Ayurveda and Integrative Medicine found that participants taking holy basil extract experienced significant improvements in general stress symptoms, sexual problems, sleep issues, and forgetfulness compared to placebo. Another study in the Nepal Medical College Journal showed a 39% reduction in anxiety symptoms after 60 days of holy basil supplementation.
How It Works: Holy basil contains eugenol, caryophyllene, and triterpenoic acids that help reduce inflammation and cortisol levels. It also has mild COX-2 inhibitor effects (similar to some anti-inflammatory medications) and appears to enhance GABA activity.
Typical Dosage: 300-2,000 mg of dried leaf or 2-3 mL of tincture three times daily.
Best For: Stress-related anxiety with physical symptoms like digestive issues or inflammation.
4. Siberian Ginseng (Eleutherococcus senticosus)
Not to be confused with Asian or American ginseng, Siberian ginseng (also called eleuthero) was one of the first herbs studied as an adaptogen.
Scientific Evidence: Research published in the journal Pharmaceuticals demonstrated that eleuthero can help prevent stress-induced immune suppression and improve mental performance during stressful situations. A study in the Archives of Gerontology and Geriatrics found that eleuthero improved social functioning and mental health in elderly patients experiencing moderate fatigue and stress.
How It Works: Eleuthero contains compounds called eleutherosides that appear to support adrenal function and help regulate the HPA axis. It also has antioxidant properties that may protect neurons from stress-induced damage.
Typical Dosage: 400-900 mg daily of standardized extract (containing 0.8% eleutherosides).
Best For: Physical and mental fatigue, stress recovery, and immune support during stressful periods.
5. Schisandra (Schisandra chinensis)
This berry has been used in Traditional Chinese Medicine for centuries and is known as "five flavor berry" because it contains all five basic flavors (sweet, sour, bitter, salty, and pungent).
Scientific Evidence: A 2017 review in Frontiers in Pharmacology highlighted schisandra's ability to modulate the HPA axis and reduce cortisol levels during stress. Clinical studies have shown improvements in concentration, coordination, and endurance under stressful conditions.
How It Works: Schisandra contains lignans that appear to normalize stress hormone levels and protect the liver (which plays a role in hormone metabolism). It also has antioxidant properties and may enhance dopamine levels.
Typical Dosage: 500-2,000 mg of dried berry or 2-4 mL of tincture daily.
Best For: Stress with liver involvement, stress-related skin issues, and poor concentration during stressful periods.
6. L-Theanine
While not technically an herb, L-theanine is an amino acid found in green tea that has adaptogenic properties and is particularly effective for anxiety.
Scientific Evidence: A 2019 systematic review in Plant Foods for Human Nutrition concluded that L-theanine significantly reduces stress and anxiety in people experiencing stressful conditions. Another study in the Journal of Clinical Psychiatry found that L-theanine helped reduce anxiety symptoms in patients with schizophrenia and schizoaffective disorder.
How It Works: L-theanine increases alpha brain waves, which are associated with a state of "relaxed alertness." It also appears to modulate levels of GABA, dopamine, and serotonin, and may block the binding of glutamate (an excitatory neurotransmitter) to brain cells.
Typical Dosage: 200-400 mg daily.
Best For: Acute anxiety, stress with racing thoughts, and anxiety that interferes with focus or sleep.
How to Use Adaptogens Effectively
To get the most benefit from adaptogens while minimizing potential risks, consider these guidelines:
Choose the Right Adaptogen for Your Symptoms
Different adaptogens have different strengths. Consider your specific symptoms when selecting an adaptogen:
- For anxiety with insomnia: Ashwagandha or L-theanine
- For stress with fatigue: Rhodiola or Siberian ginseng
- For stress with digestive issues: Holy basil
- For stress with poor concentration: Schisandra or Rhodiola
Start Low and Go Slow
Begin with a lower dose than recommended and gradually increase as needed. This allows you to assess your body's response and minimize the risk of side effects.
Be Consistent
Unlike conventional anti-anxiety medications that often work immediately, adaptogens typically require consistent use over time to achieve maximum benefits. Most research studies show significant effects after 2-12 weeks of regular use.
Consider Cycling
Some herbalists recommend "cycling" adaptogens—taking them for a period (e.g., 6-8 weeks) followed by a break (e.g., 1-2 weeks). This may help prevent tolerance and maintain effectiveness, though scientific evidence for this approach is limited.
Quality Matters
Choose standardized extracts from reputable companies that test for purity and potency. Look for products that specify the concentration of active compounds (e.g., withanolides in ashwagandha or rosavins in rhodiola).
Consider Adaptogen Combinations
Some research suggests that certain adaptogens work synergistically when combined. For example, a combination of rhodiola, schisandra, and eleuthero has been studied for its effects on fatigue and stress. However, when first starting with adaptogens, it's often best to try them individually to assess your response.
Safety Considerations and Potential Side Effects
While adaptogens are generally considered safe for most people, they're not without potential risks and contraindications:
Common Side Effects
Side effects of adaptogens are typically mild and may include:
- Digestive upset (nausea, diarrhea, stomach discomfort)
- Headache
- Dizziness
- Changes in blood pressure (particularly with rhodiola and eleuthero)
- Drowsiness (particularly with ashwagandha)
- Stimulation or insomnia if taken too late in the day (particularly with rhodiola)
Who Should Avoid Adaptogens
Adaptogens may not be appropriate for:
- Pregnant or breastfeeding women: Safety data is limited, and some adaptogens may affect hormone levels.
- People with autoimmune conditions: Some adaptogens stimulate immune function, which could potentially exacerbate autoimmune reactions.
- People with hormone-sensitive conditions: Some adaptogens may affect hormone levels and could potentially impact conditions like breast cancer, uterine fibroids, or endometriosis.
- People taking certain medications: Adaptogens may interact with sedatives, blood thinners, immunosuppressants, and medications for diabetes, blood pressure, or thyroid conditions.
Drug Interactions
Potential interactions include:
- Blood pressure medications: Some adaptogens may enhance or reduce the effects of these drugs.
- Blood thinners: Some adaptogens may increase the risk of bleeding when combined with anticoagulant or antiplatelet medications.
- Immunosuppressants: Adaptogens that stimulate immune function may counteract these medications.
- Sedatives: Some adaptogens may enhance the effects of sedative medications.
- Thyroid medications: Some adaptogens may affect thyroid hormone levels.
Integrating Adaptogens with Other Anxiety Management Strategies
For optimal results, adaptogens should be part of a comprehensive approach to managing stress and anxiety:
Lifestyle Foundations
Ensure you're addressing these fundamental aspects of stress management:
- Sleep: Aim for 7-9 hours of quality sleep per night.
- Physical activity: Regular exercise is one of the most effective natural anxiety remedies.
- Nutrition: A diet rich in whole foods, omega-3 fatty acids, and antioxidants supports mental health.
- Stress management techniques: Practices like meditation, deep breathing, and progressive muscle relaxation can significantly reduce anxiety.
- Social connection: Maintaining supportive relationships is crucial for emotional wellbeing.
Complementary Natural Approaches
Consider combining adaptogens with:
- Cognitive-behavioral techniques: These evidence-based approaches help change thought patterns that contribute to anxiety.
- Mindfulness practices: Regular meditation has been shown to reduce anxiety and stress.
- Other supportive supplements: Magnesium, omega-3 fatty acids, B vitamins, and probiotics may complement the effects of adaptogens.
Working with Healthcare Providers
For best results:
- Inform all healthcare providers about your use of adaptogens
- Consider working with an integrative medicine practitioner or herbalist familiar with adaptogenic herbs
- Don't discontinue prescribed medications without medical supervision
- Be open to a combined approach that may include conventional treatments alongside natural remedies
Conclusion
Adaptogens offer a promising natural approach to managing stress and anxiety, with a growing body of scientific evidence supporting their traditional uses. By helping the body adapt to stressors and promoting balance in physiological systems, these remarkable herbs and compounds can be valuable tools in your anxiety management toolkit.
When used appropriately—with attention to quality, dosage, and individual needs—adaptogens may help reduce anxiety symptoms, improve stress resilience, and support overall wellbeing. However, they work best as part of a comprehensive approach that includes lifestyle modifications, stress management techniques, and appropriate medical care when needed.
As with any approach to managing anxiety, individual responses to adaptogens vary. It may take some experimentation to find the adaptogen or combination that works best for your unique situation. By starting with a clear understanding of these powerful botanical allies and using them mindfully, you can harness their potential to help navigate life's stresses with greater ease and resilience.
References
- Panossian A, Wikman G. Effects of Adaptogens on the Central Nervous System and the Molecular Mechanisms Associated with Their Stress-Protective Activity. Pharmaceuticals. 2010;3(1):188-224.
- Lopresti AL, Smith SJ, Malvi H, Kodgule R. An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: A randomized, double-blind, placebo-controlled study. Medicine (Baltimore). 2019;98(37):e17186.
- Anghelescu IG, Edwards D, Seifritz E, Kasper S. Stress management and the role of Rhodiola rosea: a review. International Journal of Psychiatry in Clinical Practice. 2018;22(4):242-252.
- Chandrasekhar K, Kapoor J, Anishetty S. A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults. Indian J Psychol Med. 2012;34(3):255-262.
- Cropley M, Banks AP, Boyle J. The Effects of Rhodiola rosea L. Extract on Anxiety, Stress, Cognition and Other Mood Symptoms. Phytother Res. 2015;29(12):1934-1939.
- Jamshidi N, Cohen MM. The Clinical Efficacy and Safety of Tulsi in Humans: A Systematic Review of the Literature. Evid Based Complement Alternat Med. 2017;2017:9217567.
- Bhattacharyya D, Sur TK, Jana U, Debnath PK. Controlled programmed trial of Ocimum sanctum leaf on generalized anxiety disorders. Nepal Med Coll J. 2008;10(3):176-179.
- Cicero AFG, Bove M, Colletti A, et al. Short-Term Impact of a Combined Nutraceutical on Cognitive Function, Perceived Stress and Depression in Young Elderly with Cognitive Impairment: A Randomized, Double-Blind, Placebo-Controlled Study. J Prev Alzheimers Dis. 2017;4(1):12-15.
- Szopa A, Ekiert R, Ekiert H. Current knowledge of Schisandra chinensis (Turcz.) Baill. (Chinese magnolia vine) as a medicinal plant species: a review on the bioactive components, pharmacological properties, analytical and biotechnological studies. Phytochem Rev. 2017;16(2):195-218.
- Williams JL, Everett JM, D'Cunha NM, et al. The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review. Plant Foods Hum Nutr. 2020;75(1):12-23.