Quick Answer
Ashwagandha (Withania somnifera) is an Ayurvedic rasayana herb with 3,000 years of use for vitality, mental clarity, and sattvic consciousness. Modern research confirms it reduces cortisol by up to 30%, improves sleep, enhances cognition, and supports thyroid function. The Charaka Samhita classifies it as medhya rasayana (mind-enhancing tonic). A 2012 peer-reviewed study confirmed significant cortisol reduction and stress relief. Take 300-600 mg standardized extract (KSM-66 or Sensoril) before meditation or sleep for spiritual and physiological benefits.
Table of Contents
- 3,000 Years of Ashwagandha: Charaka Samhita and Ayurvedic Tradition
- What Makes Ashwagandha an Adaptogen?
- Scientific Evidence: What Research Shows
- Spiritual Properties and Consciousness Support
- Ashwagandha and Sattvic Consciousness
- How Ashwagandha Supports Meditation Practice
- Chakra Associations and Energy Work
- Dosage, Forms, and Timing
- Traditional Preparations and Combinations
- Safety, Contraindications, and Cautions
- Ashwagandha vs. Other Adaptogens
- Incorporating Ashwagandha in Spiritual Ritual
- Frequently Asked Questions
Key Takeaways
- Ancient Foundation: The Charaka Samhita (compiled approximately 400 BCE to 200 CE) classifies ashwagandha as a medhya rasayana, specifically for enhancing mental function, consciousness, and longevity.
- Scientific Confirmation: A 2012 peer-reviewed study in the Indian Journal of Psychological Medicine confirmed significant cortisol reduction, stress score reduction, and C-reactive protein decrease in chronically stressed adults.
- Adaptogenic Action: Unlike stimulants that override the body's natural state, ashwagandha normalizes stress response physiology, reducing excess cortisol while supporting appropriate activation when needed.
- Meditation Support: By reducing baseline cortisol and GABA-A receptor effects, ashwagandha creates the physiological conditions of relaxed alertness associated with deep meditative states.
- Well-Established Safety: Ashwagandha has one of the strongest safety records of any botanical supplement at doses of 300-600 mg daily of standardized extract, with contraindications for pregnancy and autoimmune conditions.
3,000 Years of Ashwagandha: Charaka Samhita and Ayurvedic Tradition
Ashwagandha (Withania somnifera), whose Sanskrit name translates roughly as "smell of horse" (reflecting both the root's distinctive odor and the belief that it confers the strength and vitality of a horse), has been used in Ayurvedic medicine for approximately 3,000 years. Its inclusion in the Charaka Samhita, one of the two foundational texts of classical Ayurveda (the other being the Sushruta Samhita), establishes it among the most ancient and thoroughly documented botanical medicines in human history.
The Charaka Samhita, compiled over several centuries beginning approximately 400 BCE and traditionally attributed to the physician Charaka working in the Atreya school of Ayurveda, represents one of the most comprehensive systematic medical texts of the ancient world. Its classification system includes ashwagandha prominently among the rasayana (rejuvenating) herbs, a category of preparations believed to promote longevity, vitality, intelligence, and disease resistance. More specifically, the Charaka Samhita places ashwagandha among the medhya rasayana, herbs that specifically enhance medha (mental function, wisdom, and consciousness).
The classical indications for ashwagandha in Ayurvedic literature include emaciation (physical depletion), fatigue, weakness after illness, sexual debility, nervous exhaustion, anxiety, and insomnia. These classical indications map remarkably well onto modern concepts of burnout, cortisol dysregulation, and chronic stress, suggesting the ancient physicians were accurately identifying a pattern of physiological dysfunction that we now have biochemical language for.
Vagbhata, the 7th-century Ayurvedic physician whose Ashtanga Hridayam (Heart of Medicine) is the third major classical Ayurvedic text, described ashwagandha as "the best among the herbs that impart strength." He documented its use for nervous system restoration, reproductive vitality, and as support for the development of higher consciousness (buddhi) in practitioners of yoga and spiritual disciplines.
Classical Ayurvedic Context
In classical Ayurveda, the rasayana category of herbs occupies a special place because its goal extends beyond treating disease to actively promoting optimal function and consciousness. The Charaka Samhita describes the ideal outcome of rasayana therapy as producing a person who is "long-lived, free from disease, with excellent memory and intellect, youthful, glowing complexion, voice like thunder, body as strong as that of a lion, perfectly healthy." While this is classical aspirational language rather than clinical specification, it accurately conveys the scope of what ashwagandha was used for: not just symptom relief but genuine enhancement of human potential.
What Makes Ashwagandha an Adaptogen?
The term "adaptogen" was coined by Soviet pharmacologist Nikolai Lazarev in 1947 to describe substances that increase non-specific resistance to stress. Lazarev and his colleague Israel Brekhman, working at the Institute of Marine Biology in Vladivostok, established three criteria that a substance must meet to qualify as a true adaptogen: it must produce non-specific resistance to stress (helping the body adapt to a wide range of stressors rather than one specific type), it must normalize physiological function regardless of which direction homeostasis has been disturbed (whether too high or too low, it should help return to optimal range), and it must cause no significant harmful side effects at therapeutic doses.
Ashwagandha meets all three criteria. Its ability to reduce excess cortisol in chronically stressed individuals while potentially supporting cortisol production in those who are depleted and hypocortisolic represents the normalization action classic to adaptogenic herbs. Its wide range of documented benefits, spanning stress response, thyroid function, reproductive hormones, immune function, cognitive performance, and sleep quality, reflects non-specific action across multiple physiological systems. And its extensive safety record across thousands of years of clinical use, confirmed by modern safety studies, meets the no-significant-harm criterion.
The primary active compounds in ashwagandha are a family of steroidal lactones called withanolides, particularly withaferin A and withanolide D. These compounds appear to modulate multiple biological targets including the HPA axis (cortisol regulation), thyroid hormone production (specifically T3 and T4), GABA-A receptors (producing anxiolytic effects), testosterone production via LH receptor activation, and numerous anti-inflammatory pathways.
Scientific Evidence: What Research Shows
Ashwagandha is among the most studied Ayurvedic herbs in contemporary scientific literature, with over 100 clinical studies published as of 2024. The evidence base is substantially stronger than for most herbal supplements:
Cortisol and Stress Reduction: The most cited study in this category is a 2012 randomized, double-blind, placebo-controlled trial by Chandrasekhar and colleagues published in the Indian Journal of Psychological Medicine. Sixty-four adults with a history of chronic stress received either ashwagandha root extract (300 mg twice daily) or placebo for 60 days. The ashwagandha group showed statistically significant reductions in serum cortisol levels (27.9% reduction vs. 7.9% in placebo), stress assessment scores, anxiety scores, and serum C-reactive protein (an inflammatory marker). The study is peer-reviewed, randomized, placebo-controlled, and adequately powered, making it one of the stronger pieces of evidence in herbal medicine research.
Cognitive Function: A 2017 study in the Journal of Dietary Supplements found 300 mg twice daily ashwagandha improved both immediate and general memory, executive function, attention, and information processing speed in adults with mild cognitive impairment compared to placebo over 8 weeks. A 2021 study in Nutrients found similar cognitive benefits in healthy adults without cognitive impairment.
Sleep Quality: A 2019 study in PLOS ONE found 600 mg daily ashwagandha extract for 10 weeks significantly improved sleep quality, mental alertness upon waking, and quality of life measures in adults with non-restorative sleep. Sleep onset latency (time to fall asleep) was also significantly reduced.
Thyroid Function: A 2018 study in the Journal of Alternative and Complementary Medicine found 600 mg ashwagandha daily significantly increased serum levels of T3 (triiodothyronine), T4 (thyroxine), and reduced TSH in adults with subclinical hypothyroid function. This thyroid-supporting action makes ashwagandha particularly relevant for the many people with subclinical thyroid insufficiency who do not yet meet criteria for pharmaceutical treatment.
Important caveats: Many studies are industry-funded or use proprietary extracts (KSM-66, Sensoril) not directly comparable to raw powder or other preparations. Effect sizes vary. Independent replication of some findings is still needed. The overall evidence base is stronger than most herbal supplements but does not meet the standards of pharmaceutical drug evidence.
Spiritual Properties and Consciousness Support
The spiritual significance of ashwagandha in Ayurvedic tradition extends beyond its physical adaptogenic effects into the realm of consciousness development. Classical texts consistently describe it as promoting ojas, the subtle vital essence that in Ayurvedic physiology is the refined product of healthy digestion and metabolism. Ojas is considered the physical substrate of higher consciousness, the biological foundation for subtle spiritual perception, immunity, vitality, and love.
When ojas is depleted through chronic stress, excessive activity, poor sleep, sexual excess, or illness, the capacity for meditation, spiritual practice, and subtle perception diminishes. Practitioners report that worry dominates the mind, spiritual practice feels effortful and unrewarding, and the inner silence needed for deeper states becomes inaccessible. Rasayana herbs like ashwagandha are specifically prescribed in classical Ayurveda to rebuild ojas as the foundation for renewed spiritual development.
This classical understanding maps onto modern physiological language: what Ayurveda calls ojas depletion, contemporary functional medicine recognizes as HPA axis dysregulation, cortisol dysrhythmia, and nervous system exhaustion. Both systems agree on the presentation and on the importance of rebuilding physiological vitality as a foundation for higher-order functioning, spiritual and otherwise.
Ashwagandha and Sattvic Consciousness
Ayurvedic philosophy describes three fundamental qualities (gunas) that pervade all matter and consciousness: tamas (inertia, heaviness, darkness), rajas (activity, passion, agitation), and sattva (clarity, harmony, luminosity). Spiritual development in Ayurvedic understanding involves progressively reducing tamasic and rajasic tendencies in both diet and consciousness, cultivating the sattvic quality that allows higher states of awareness.
Most foods and substances are classified according to their predominant guna. Ashwagandha is classified as primarily sattvic, promoting clarity and harmony rather than agitation or heaviness. This places it in an elite category of spiritual support herbs alongside brahmi (Bacopa monnieri), shatavari, and amalaki. The sattvic classification reflects practitioners' long-term observation that ashwagandha supports rather than disrupts the calm, clear, internally focused state associated with successful spiritual practice.
This is distinguished from rajasic stimulants (caffeine, guggulu, some warming spices) that provide energy through activation and agitation, and tamasic substances (sedatives, heavy foods) that produce dullness. Sattvic substances provide energy through restoration, clarity, and harmony with natural biological rhythms rather than overriding them.
How Ashwagandha Supports Meditation Practice
The physiological conditions most conducive to deep meditation are those of "relaxed alertness": a nervous system that is neither excessively aroused (fight-or-flight activation) nor excessively quiescent (drowsiness and sleep tendency). This state is associated with alpha and theta brainwave predominance, low cortisol, balanced autonomic tone, and good energy availability without the agitation of sympathetic dominance.
Ashwagandha's primary documented effects directly support this meditative state. Its cortisol-reducing action decreases the sympathetic nervous system activation that makes the mind race and prevents present-moment attention. Its GABA-A receptor effects produce mild anxiolytic (anxiety-reducing) action without sedation. Its sleep quality improvements mean practitioners arrive at their morning meditation sessions better rested and less neurologically depleted.
Ashwagandha-Supported Meditation Protocol
- Evening Preparation: Take 300-600 mg ashwagandha root extract in warm almond or oat milk with a small amount of honey and a pinch of cardamom, 30-60 minutes before sleep. This is the classical milk preparation (ashwagandha ksheerapaka) that the Charaka Samhita recommends for building ojas during sleep.
- Sleep Optimization: Allow the ashwagandha and pre-sleep ritual to support natural sleep architecture. Over 2-4 weeks of consistent practice, most users report improved sleep onset, deeper sleep quality, and more rested awakening.
- Morning Practice: Morning meditation benefits from the improved sleep quality produced by evening ashwagandha use. Begin your morning session in the first 30-60 minutes after waking, when theta-to-alpha brainwave transition is naturally occurring.
- Alternative: Pre-Meditation Dose: Some practitioners find a smaller dose (150-300 mg) taken 30-60 minutes before afternoon or evening meditation sessions produces useful anxiolytic support without inducing drowsiness. Experiment to find your optimal timing and dose.
- Track Your Practice: Keep a meditation journal noting quality of sessions over the first 4-8 weeks of ashwagandha use. Look for changes in: ease of settling into meditation, frequency of restless or racing mind episodes, depth of stillness achieved, and length of effective practice periods.
Chakra Associations and Energy Work
Integrating Ayurvedic herb knowledge with chakra energy work creates a more complete picture of ashwagandha's therapeutic territory:
Root Chakra (Muladhara): Ashwagandha's primary energetic domain. Its grounding, strengthening, earth-element nature directly addresses root chakra qualities of safety, stability, physical vitality, and relationship with the body. For practitioners experiencing root chakra depletion (fear, insecurity, physical weakness, disconnection from the body), ashwagandha can be valuable foundational support alongside specific root chakra practices.
Sacral Chakra (Svadhisthana): Classical texts prominently feature ashwagandha as a reproductive tonic, supporting male testosterone production and female reproductive health. Research confirms its effects on testosterone, LH, and FSH, connecting it to the sacral chakra's governance of sexuality, creative life force, and pleasure. Rebuilding depleted sexual vitality and creative drive falls within ashwagandha's documented effects.
Solar Plexus Chakra (Manipura): The cortisol-reducing, adrenal-supporting, and energy-normalizing effects of ashwagandha address many solar plexus chakra concerns: the depletion of personal power through chronic stress, the collapse of boundaries through adrenal exhaustion, and the restoration of appropriate assertive energy.
Third Eye Chakra (Ajna): Through its cognitive-enhancing effects, including improved memory, attention, and information processing, ashwagandha supports the clarity and concentration that Ajna chakra development requires. The reduction of cortisol-induced cognitive fog creates clearer thinking space for intuitive development.
Dosage, Forms, and Timing
| Form | Typical Dose | Notes |
|---|---|---|
| Root powder (churna) | 1-6 grams daily | Traditional form; lower withanolide concentration; takes with warm milk |
| Root extract (standardized) | 300-600 mg daily | Most studied; look for 5%+ withanolides; KSM-66 or Sensoril most evidenced |
| KSM-66 (full spectrum) | 300-600 mg daily | 22+ clinical trials; made from roots only; good evidence base |
| Sensoril (full spectrum) | 125-250 mg daily | Made from leaves and roots; lower dose needed; different withanolide profile |
| Ashwagandha ghee | 1 teaspoon daily | Traditional preparation for ojas building; fat-soluble withanolide extraction |
The classical Ayurvedic recommendation for timing is evening, with warm milk before sleep, for its rejuvenating effects during the body's natural restoration period. Contemporary research generally uses twice-daily dosing (morning and evening), consistent with achieving stable blood levels of withanolides throughout the day. Some practitioners find single evening dosing sufficient and better tolerated. Individual response to timing varies significantly.
Traditional Preparations and Combinations
Classical Ayurvedic pharmacy uses ashwagandha in numerous compound formulations that enhance its effects through synergistic botanical combination:
Ashwagandha Milk (Ksheerapaka): The most traditional preparation. Simmer 1-2 teaspoons ashwagandha powder in 2 cups milk for 15-20 minutes until reduced by half. Add honey, cardamom, and a pinch of saffron if available. The fat in milk enhances absorption of fat-soluble withanolides. Drink warm before sleep.
Chyawanprash: The most famous classical rasayana formulation, with ashwagandha as one of 40+ herbs combined with amalaki (amla) as the primary ingredient. Used extensively across India for immune support, longevity, and cognitive enhancement. Available as a jam-like paste from Ayurvedic suppliers.
Ashwagandhadi Lehyam: A traditional herbal jam specific to ashwagandha, combining it with raw cane sugar, sesame oil, honey, and numerous secondary herbs. Used specifically for rebuilding physical vitality after illness, convalescence, and ojas depletion from excessive activity.
Safety, Contraindications, and Cautions
Ashwagandha has one of the better safety profiles of any widely used herbal supplement, with a long history of use and multiple modern safety studies confirming it. At doses of 300-600 mg standardized extract daily for periods up to 90 days (the length of most studies), significant adverse effects are rare. Some people report mild gastrointestinal upset, particularly on an empty stomach; taking with food resolves this in most cases.
Important contraindications: pregnancy (ashwagandha has traditional use as an abortifacient and should be strictly avoided during pregnancy), active autoimmune disease (its immune-modulating effects could theoretically exacerbate autoimmune conditions, though evidence is limited), thyroid medication use (it enhances thyroid hormone production and may require medication adjustment), sedative medications (it potentiates sedative effects), and surgery (discontinue 2 weeks before any surgery due to possible blood pressure and CNS effects).
People with thyroid conditions who want to use ashwagandha should do so in consultation with their prescribing physician, as the thyroid-stimulating effects may require medication dose adjustment if thyroid hormone levels change.
Ashwagandha vs. Other Adaptogens
| Adaptogen | Character | Best For | Tradition |
|---|---|---|---|
| Ashwagandha | Calming, grounding, warming | Burnout, anxiety, insomnia, depleted vitality | Ayurvedic (India) |
| Rhodiola rosea | Stimulating, clarifying, cooling | Fatigue, low energy, cognitive performance under stress | Siberian/Scandinavian |
| Eleuthero (Siberian Ginseng) | Tonifying, balancing, neutral | Athletic performance, immune support, general stamina | Russian/Chinese |
| Panax Ginseng | Warming, stimulating, tonifying | Yang deficiency, sexual vitality, acute performance | Chinese/Korean |
| Brahmi (Bacopa) | Cooling, cognitive, sattvic | Memory, learning, meditation depth | Ayurvedic (India) |
| Reishi | Calming, spiritual, immune | Spiritual development, immune modulation, sleep | Chinese (Shen tonic) |
Incorporating Ashwagandha in Spiritual Ritual
Ashwagandha Evening Ritual for Spiritual Practice
- Prepare your space: 30 minutes before your intended sleep time, dim all lights, silence devices, and create a simple, clean environment for your evening ritual.
- Prepare Ashwagandha Milk: Warm 1 cup of plant or dairy milk over low heat. Add 1 teaspoon ashwagandha root powder (or the contents of a 300-600 mg capsule). Stir with cardamom, a pinch of saffron if available, and honey to taste. The preparation itself is part of the ritual, an act of care for your physical vessel.
- Gratitude and Intention: As you drink the prepared milk slowly, reflect on three things from the day you are grateful for and set one intention for tomorrow's spiritual practice. This use of gratitude has documented positive epigenetic effects alongside its obvious psychological benefits.
- Gentle Movement: Follow with 10-15 minutes of restorative yoga (legs up the wall, supported child's pose) or simple forward folds that activate the parasympathetic nervous system and help transition from the day's activity into restorative sleep.
- Brief Meditation: 10-15 minutes of breath-focused or body scan meditation before sleep, taking advantage of the relaxed alertness that ashwagandha supports. Many practitioners report this combination produces their deepest and most easeful meditation sessions.
- Sleep as Spiritual Practice: Classical Ayurveda considers deep, restorative sleep as foundational spiritual practice, the period when ojas is built and consciousness is renewed. Treat the sleep that follows your ritual with the same respect as your waking practice.
The Rasayana Path: Long-Term Vitality as Spiritual Practice
In classical Ayurveda, the rasayana path was not merely about taking herbal supplements. It was a comprehensive lifestyle protocol that included seasonal purification practices, dietary optimization, sexual moderation, ethical living, daily routine (dinacharya), and specific herbal support. Ashwagandha is most effective within this broader context of conscious living. When used as a substitute for sleep, proper nutrition, or stress management, its effects are limited. When used as part of a genuine rasayana lifestyle, it becomes a meaningful partner in the long-term project of building the physical and mental vitality that supports the deepest levels of spiritual development.
Frequently Asked Questions
What are the spiritual benefits of ashwagandha?
Ashwagandha is classified in classical Ayurvedic texts as a medhya rasayana (mind-enhancing rejuvenating tonic) that supports meditative states, mental clarity, and sattvic (pure) consciousness. Modern research confirms cortisol reduction, cognitive function enhancement, and nervous system regulation, all of which create physiological conditions supporting deeper meditation, clearer perception, and sustained spiritual practice.
What does the Charaka Samhita say about ashwagandha?
The Charaka Samhita, a foundational Ayurvedic text compiled approximately 400 BCE to 200 CE, includes ashwagandha among the primary rasayana herbs, specifically as medhya rasayana enhancing mental function and consciousness. It describes ashwagandha as promoting longevity, vitality, strength, and mental clarity, with classical indications for nervous exhaustion, emaciation, fatigue, and insomnia.
What does scientific research show about ashwagandha?
A 2012 randomized controlled trial in the Indian Journal of Psychological Medicine found ashwagandha root extract (300 mg twice daily for 60 days) reduced cortisol by 27.9%, significantly improved stress and anxiety scores, and reduced C-reactive protein. Studies also confirm cognitive enhancement in mild cognitive impairment, sleep quality improvement, thyroid hormone support, and testosterone enhancement in deficient males.
What is an adaptogen?
Adaptogens are substances that help the body adapt to stress and restore physiological balance without significant side effects. The term was coined by Soviet pharmacologist Nikolai Lazarev in 1947. True adaptogens must produce non-specific stress resistance, normalize physiological function regardless of direction of perturbation, and cause no significant harmful side effects at therapeutic doses. Ashwagandha meets all three criteria.
How does ashwagandha support meditation?
Ashwagandha supports meditation by reducing cortisol and baseline sympathetic nervous system activation, creating relaxed alertness. Its withanolides enhance GABA-A receptor sensitivity, producing mild anxiolytic effects that ease the racing mind preventing sustained meditation. Its sleep quality improvements mean practitioners arrive at morning sessions better rested. Many report noticeably easier settling into meditative states within 2-4 weeks of consistent use.
What is the best time to take ashwagandha for spiritual practice?
Classical Ayurveda recommends ashwagandha in warm milk before sleep for ojas-building during the body's natural restoration period. Many contemporary practitioners take it 30-60 minutes before meditation for cortisol-reducing support. Evening dosing produces the most consistent results across both research and practitioner experience. Experiment with timing and keep a journal noting meditation quality changes over 4-8 weeks.
Is ashwagandha safe?
Generally considered safe for healthy adults at 300-600 mg standardized extract daily. Contraindicated in pregnancy (abortifacient properties), active autoimmune disease (immune modulation), thyroid medication use (may require dose adjustment), sedative medications (potentiation), and surgery (discontinue 2 weeks before). Mild gastrointestinal upset is the most common side effect; taking with food resolves this.
What is KSM-66 ashwagandha?
KSM-66 is a full-spectrum ashwagandha root extract by Ixoreal Biomed, standardized to 5%+ withanolides, with 22+ published clinical trials making it one of the most studied specific formulations. It is produced using only roots (not leaves), preserving the full-spectrum character of traditional root preparations. Most of the clinical research demonstrating ashwagandha's stress-reducing, cognitive, and sleep-quality effects uses KSM-66 or similarly standardized extracts.
What chakra is ashwagandha associated with?
Ashwagandha is primarily associated with the root chakra (Muladhara) through its grounding, stabilizing, and vitality-building properties. Secondarily, its effects on reproductive hormones connect it to the sacral chakra, its adrenal-supporting effects to the solar plexus, and its cognitive-enhancing properties to the third eye chakra. As a whole-system tonic, it ultimately supports all chakras through its foundational vitality-building action.
How is ashwagandha different from ginseng?
Ashwagandha is a calming adaptogen that primarily reduces cortisol and supports sleep, classified as sattvic in Ayurveda. Panax ginseng is a warming, stimulating adaptogen that increases energy through HPA axis activation. Ashwagandha is better suited for burnout, anxiety, and depleted vitality; ginseng is better suited for acute performance needs and yang-deficient presentations. They complement each other but are not interchangeable.
How long does ashwagandha take to work?
Most clinical studies use 8-12 week treatment periods. Cortisol reduction effects appear within 4-8 weeks. Sleep quality improvements are often noticed within 1-2 weeks. Cognitive improvements typically appear within 8 weeks. Spiritual and meditative benefits tend to accumulate gradually alongside physiological changes over 2-3 months of consistent daily use. Occasional use provides less benefit than consistent daily supplementation.
What is the traditional Ayurvedic preparation of ashwagandha?
The classical preparation is ashwagandha ksheerapaka: simmering 1-2 teaspoons root powder in 2 cups milk for 15-20 minutes. The milk fat enhances absorption of fat-soluble withanolides. This is taken warm before sleep with honey and cardamom. Other classical preparations include ashwagandhadi lehyam (herbal jam), and compound formulations like Chyawanprash that include ashwagandha among 40+ herbs.
Sources and References
- Chandrasekhar, K., Kapoor, J., Anishetty, S. (2012). A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root. Indian Journal of Psychological Medicine, 34(3), 255-262.
- Choudhary, D., Bhattacharyya, S., Joshi, K. (2017). Body Weight Management in Adults Under Chronic Stress Through Treatment With Ashwagandha Root Extract. Journal of Evidence-Based Integrative Medicine, 22(1), 96-106.
- Langade, D., et al. (2019). Efficacy and Safety of Ashwagandha Root Extract in Insomnia. PLOS ONE, 14(9).
- Sharma, A.K., Basu, I., Singh, S. (2018). Efficacy and Safety of Ashwagandha Root Extract in Subclinical Hypothyroid Patients. Journal of Alternative and Complementary Medicine, 24(3), 243-248.
- Agnivesa. (Translated by Sharma, P.V., 1981). Charaka Samhita. Chaukhamba Orientalia.
- Raut, A.A., et al. (2012). Exploratory study to evaluate tolerability, safety, and activity of Ashwagandha in healthy volunteers. Journal of Ayurveda and Integrative Medicine, 3(3), 111.
- Mishra, L.C., Singh, B.B., Dagenais, S. (2000). Scientific basis for the therapeutic use of Withania somnifera. Alternative Medicine Review, 5(4), 334-346.
- Palliyaguru, D., et al. (2021). Withaferin A: A Potential Therapeutic Agent Against COVID-19 Infection. Journal of Natural Products. (contextual reference)
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