Adaptogens
"Adaptogen" is a term for plants and mushrooms proposed to help the body adapt to stress. Researchers define it in different ways, and the human evidence behind each ingredient is different, often small and mixed. This section starts with the ingredients people actually search for, and keeps the claims separate from the evidence.
Each ingredient has one guide, tradition and laboratory findings are kept apart from human studies, and we link a page only when it has real, sourced content. Natural does not automatically mean safe.
Explore ingredients
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Herbs & Roots Commonly Classified as Adaptogens
Herbs and roots commonly called adaptogens.
- Ashwagandha
- Rhodiola
- Asian Ginseng
- American Ginseng
- Eleuthero (Siberian Ginseng)
- Holy Basil (Tulsi)
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Berries & Other Botanicals
Berries and other botanicals.
- Schisandra
- Amla (Indian Gooseberry)
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Mushrooms Commonly Marketed as Adaptogens
Mushrooms marketed as adaptogens. Their guides are in Mushrooms.
- Reishi
- Cordyceps
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Related Ingredients & Classification Questions
Ingredients with classification questions.
- Astragalus
- Shatavari
- Maca
- Licorice Root
- Lion's Mane
- Chaga
Adaptogens by Wellness Goal
These pages ask what the research shows for each goal. Different ingredients do not share the same benefits, and for most goals the human evidence is limited.
- Stress, Anxiety & Resilience
- Energy & Fatigue
- Sleep & Relaxation
- Focus & Mental Performance
- Exercise Performance & Recovery
Understanding Adaptogens
What an adaptogen is, where the idea came from, and how to read claims about stress, cortisol and "adrenal support".
Adaptogen Supplements & Product Forms
Capsules, powders, extracts, teas, drinks and blends: what each format means, and why a format alone does not make a product work.
- Capsules & Tablets
- Herbal Powders
- Standardized Extracts
- Liquid Extracts & Tinctures
- Teas & Infusions
- Gummies
- Functional Drinks & Coffee Alternatives
- Single Ingredients vs. Adaptogen Blends
Adaptogen Safety & Interactions
- Each ingredient has its own risks. Ashwagandha, ginseng, rhodiola, licorice root and astragalus all have documented cautions.
- Tell your pharmacist or clinician about every supplement, especially if you take medicine for diabetes, blood pressure, thyroid conditions or seizures, take immune-suppressing medicine, are pregnant or breastfeeding, or are having surgery.
- Many supplements have not been tested in pregnant women, nursing mothers or children.
- Stop and call a clinician or pharmacist about any new reaction, such as a rash, jaundice or severe stomach upset.
- Side Effects by Ingredient
- Medication Interactions
- Pregnancy & Breastfeeding
- Children & Teenagers
- Thyroid Conditions
- Autoimmune Conditions & Immunosuppressant Medicines
- Liver & Kidney Conditions
- Blood Pressure & Blood Sugar Considerations
- Surgery & Anesthesia
- Combining Supplements
- When to Seek Medical Help
Ingredients, Extracts & Quality
Species, plant parts, extracts, labels and testing, in plain language.
- Plant Species & Ingredient Identification
- Roots, Leaves, Berries & Other Plant Parts
- Whole-Herb Powders vs. Extracts
- Standardization & Marker Compounds
- Extract Ratios Explained
- Reading Supplement Labels
- Proprietary Blends
- Independent Testing & Certificates of Analysis
- Contamination, Substitution & Adulteration
Use & Practical Questions
Studied doses, timing and combinations: what is known and what is not.
- What Clinical Studies Say About Dosage
- How Long Different Ingredients Have Been Studied
- Timing: Morning vs. Evening
- Taking Supplements with Food
- Combining Multiple Adaptogens
- Cycling Adaptogens: Evidence vs. Marketing
- Tracking Benefits & Side Effects
- When to Stop & Seek Advice
Comparisons & Choosing Products
Neutral comparisons and a checklist for comparing products. No rankings.
- Asian Ginseng vs. American Ginseng
- Ashwagandha vs. Rhodiola
- Ashwagandha vs. Ginseng
- Herbal Adaptogens vs. Mushroom Products
- Powders vs. Standardized Extracts
- How to Compare Adaptogen Supplements
Adaptogen Research & Evidence
Human studies, evidence summaries and how to judge a claim.
- Human Clinical Studies
- Research by Ingredient
- Research by Wellness Goal
- Traditional Use vs. Clinical Evidence
- Human Studies vs. Animal & Laboratory Research
- How Stress, Fatigue & Sleep Are Measured
- Study Limitations & Funding
- Unanswered Questions
Featured guides
Our first ingredient guides are being written and reviewed. We publish a guide only when it is sourced and ready.
Frequently asked questions
What are adaptogens?
A term for substances theorized to raise resistance to stress. NIH describes astragalus, for example, as "considered an adaptogen, which is a natural substance theorized to stimulate the body's resistance to physical, environmental, and emotional stress." [1] See What are adaptogens.
Do adaptogens work?
Are adaptogens safe?
Not automatically. See Safety.
Is adrenal fatigue real?
It is not a recognized medical diagnosis. See Adrenal fatigue claims. [2]
References
- National Center for Complementary and Integrative Health (NIH). Astragalus: Usefulness and Safety. Page dated May 2025.
- Endocrine Society. Adrenal Fatigue. Patient resource, January 25, 2022.
Content last updated . This section has not been medically reviewed.