Ashwagandha, also known as Indian ginseng or winter cherry, is a widely used medicinal herb, best known for its anti-inflammatory and anti-stress properties. Ashwagandha is derived from the roots of the Withania somnifera plant and is an evergreen shrub native to India and Southeast Asia. Ashwagandha has been used in Ayurvedic medicine (the traditional healthcare system in India) for over 3,000 years and is used in the Ayurvedic discipline of Rasayana, which promotes youthfulness and longevity. (3)(14)

Ashwagandha health benefits

Outlined below are some of the many health benefits of ashwagandha.

Improves anxiety and balances cortisol levels

Classified as an adaptogen, ashwagandha may enhance the body’s ability to better manage stress. Adaptogens are a class of herbs that aid in the regulation of hormones involved in the stress response during times of stress. They help the body adapt to stressful situations and resist the damaging effects of long-term stress. In addition, adaptogens have been shown to improve sleep and support adrenal health. (20)

Daily use of ashwagandha root extract may be effective in reducing physical symptoms of stress, including elevated blood pressure, heart rate, and feelings of anxiety. Additionally, ashwagandha may lower serum levels of cortisol, the body’s primary stress hormone. (4) While cortisol is required for many physiological functions, including blood sugar regulation and blood pressure control, chronically elevated cortisol levels may contribute to adverse health conditions, such as hypertension and type 2 diabetes. (6)

Promotes better sleep

Ashwagandha’s species name, somnifera, translates to “sleep-inducer” in Latin, hinting at its sleep-promoting effects. (22)

Daytime fatigue is commonly caused by inadequate or nonrestorative sleep and prolonged sleep onset (an extended amount of time to fall asleep). Chronic poor sleep may be a factor in many health conditions, such as depression, heart disease, and type 2 diabetes. (7)(5) Research has shown that ashwagandha supplementation may improve sleep quality and reduce the time it takes to fall asleep, thus minimizing daytime fatigue. Supplementation appears to be particularly beneficial for individuals struggling with anxiety and insomnia. (12)

woman in her bed sleeping

Ashwagandha combats daytime fatigue by improving sleep quality and may aid in the treatment of insomnia. (12)

Decreases inflammation

Ashwagandha has been shown to decrease markers of inflammation, such as C-reactive protein (CRP), a protein synthesized by the liver and released into the bloodstream in response to inflammation in the body. (2)

In one animal study, powdered ashwagandha was administered orally to arthritic rats to measure potential improvements in symptoms. Ashwagandha supplementation minimized symptom severity and restored functional motor activity. These findings suggest that ashwagandha acts as an anti-inflammatory agent and may be beneficial in the management of inflammatory symptoms. (9)

Ashwagandha also exhibits anti-oxidant properties, which help reduce inflammation in the body and protect cells from oxidative damage caused by free radicals. (20)(11)

Increases muscle mass and strength

Research has shown that using ashwagandha in combination with a strength training program may increase muscle size and strength.

A study of 57 males found that ashwagandha supplementation, twice daily for an eight-week period, yielded greater muscle strength and muscle size compared to the placebo group who consumed a capsule containing starch. Additionally, the group supplementing with ashwagandha experienced a decrease in exercise-induced muscle damage and a larger reduction in body fat percentage. (23)

elder man lighting weights in each hand

Combining ashwagandha with a resistance training program may increase muscle strength and size.

Improves male fertility and raises testosterone levels

Ashwagandha may be effective at improving male fertility. A meta-analysis of four clinical trials concluded that ashwagandha contributes to increases in sperm concentration and motility in men experiencing low sperm count. Additionally, serum testosterone and luteinizing hormone (a hormone that, in males, supports testosterone production) levels increased with supplementation for 90 days. (1)(8)

Another study investigated the connection between psychological stress, male infertility, and the effects of ashwagandha. In participants, ashwagandha decreased serum cortisol levels and perceived stress levels measured via a survey. Overall fertility measures significantly improved amongst the participants. Participants were also monitored for an additional three months following the conclusion of the study, after which a significant portion (14%) of the participants’ partners became pregnant. (1)

Enhances memory and focus

Ashwagandha may contribute to improved memory and focus. Results from an eight-week study of individuals with mild cognitive impairment suggest that ashwagandha may improve memory, attention, and response speed as determined by a series of cognition tests. Another study of healthy, young males demonstrated a significant improvement in psychomotor performance (reaction time) during a two-week period in which participants received ashwagandha supplementation. (16)

Preliminary research also suggests that ashwagandha supplementation may offer some benefits for individuals with Alzheimer’s disease; however, human studies are limited. (18) One animal study demonstrated that ashwagandha may reduce memory loss associated with aging and neurodegenerative disorders. (10)

May normalize thyroid markers in hypothyroid patients

Ashwagandha may be useful in the management of hypothyroidism, a condition characterized by an underactive thyroid gland. One eight-week study found that ashwagandha significantly improved levels of the thyroid hormones TSH, T3, and T4 in individuals with subclinical hypothyroidism (mild underactive thyroid) compared to a placebo. (19)

Supplementing with ashwagandha

Ashwagandha is widely available in four supplement forms: capsules, powders, tablets, and tinctures (liquid herbal extracts). When choosing ashwagandha supplements, search for products with extracts from the ashwagandha root instead of extracts derived from the leaves. The root contains the highest concentration of the active ingredient, withanolides, and root extracts are more extensively researched than leaf extracts. (21)

Powdered ashwagandha can easily be added to foods and beverages, and its strong bitter flavor can be masked by other flavors. Try blending some in a smoothie, stirring into coffee or tea, or adding to soup. Consult your integrative healthcare practitioner for guidance and dosage instructions specific to your desired goals.

Safety considerations

Ashwagandha supplementation is safe for most healthy individuals; however, some populations should avoid taking ashwagandha.

Avoid supplementing with ashwagandha while pregnant or breastfeeding. (15) Diabetics should exercise caution as ashwagandha may lower blood glucose levels, thus interfering with medications. Ashwagandha may also stimulate the immune system; therefore, individuals with autoimmune conditions, such as multiple sclerosis (MS), lupus, and rheumatoid arthritis, should avoid use unless directed by a practitioner. (15) Additionally, as ashwagandha may increase thyroid hormone levels, individuals with thyroid conditions, such as hyperthyroidism, should only supplement under practitioner supervision. (17)

Ashwagandha may interfere with some prescription medications. Possible drug interactions include:

  • Antihypertensive drugs
  • Diabetes medications
  • Immunosuppressants
  • Sedatives
  • Thyroid medications (15)

Consult your practitioner regarding potential drug interactions before supplementing with ashwagandha.

The bottom line

Ashwagandha boasts many health benefits, including improved sleep, decreased inflammation, and increased muscle strength. Its positive effects on mental health are the most promising and extensively researched. However, before using ashwagandha and other adaptogens, consult with your integrative healthcare practitioner to be sure they’re appropriate for you.

Fullscript simplifies supplement dispensing

Create your dispensary today I'm a patient
  1. Ambiye, V. R., Langade, D., Dongre, S., Aptikar, P., Kulkarni, M., & Dongre, A. (2013). Clinical evaluation of the spermatogenic activity of the root extract of ashwagandha (Withania somnifera) in oligospermic males: A pilot study. Evidence-Based Complementary and Alternative Medicine, 2013, 1–6.
  2. Auddy, B., Hazra, J., Ghosal, S., Abedon, B., & Mitra, A. (2008). A Standardized Withania Somnifera Extract Significantly Reduces Stress-Related Parameters in chronically stressed humans: A double-blind, randomized, placebo-controlled study. JANA, 11(1).
  3. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases. (2019). LiverTox: Clinical and research information on drug-induced liver injury . Retrieved from
  4. 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 in reducing stress and anxiety in adults. Indian Journal of Psychological Medicine, 34(3), 255–262.
  5. Chattu, V., Chattu, S., Burman, D., Spence, D., & Pandi-Perumal, S. (2019). The interlinked rising epidemic of insufficient sleep and diabetes mellitus. Healthcare, 7(1), 37.
  6. Chiodini, I. (2011). Diagnosis and treatment of subclinical hypercortisolism. The Journal of Clinical Endocrinology & Metabolism, 96(5), 1223–1236.
  7. Deshpande, A., Irani, N., & Balakrishnan, R. (2018). Study protocol and rationale for a prospective, randomized, double-blind, placebo-controlled study to evaluate the effects of Ashwagandha (Withania somnifera) extract on nonrestorative sleep. Medicine, 97(26), e11299.
  8. Durg, S., Shivaram, S. B., & Bavage, S. (2018). Withania somnifera (Indian ginseng) in male infertility: An evidence-based systematic review and meta-analysis. Phytomedicine, 50, 247–256.
  9. Gupta, A., & Singh, S. (2013). Evaluation of anti-inflammatory effect of Withania somnifera root on collagen-induced arthritis in rats. Pharmaceutical Biology, 52(3), 308–320.
  10. Kuboyama, T., Tohda, C., & Komatsu, K. (2006). Withanoside IV and its active metabolite, sominone, attenuate Aβ(25-35)-induced neurodegeneration. European Journal of Neuroscience, 23(6), 1417–1426.
  11. Kuchewar, V., Borkar, M., & Nisargandha, M. (2014). Evaluation of antioxidant potential of Rasayana drugs in healthy human volunteers. AYU (An International Quarterly Journal of Research in Ayurveda), 35(1), 46–49.
  12. Langade, D., Kanchi, S., Salve, J., Debnath, K., & Ambegaokar, D. (2019). Efficacy and safety of ashwagandha (Withania somnifera) root extract in insomnia and anxiety: A double-blind, randomized, placebo-controlled study. Cureus, e5797.
  13. Mahdi, A. A., Shukla, K. K., Ahmad, M. K., Rajender, S., Shankhwar, S. N., Singh, V., & Dalela, D. (2011). Withania somnifera improves semen quality in stress-related male fertility. Evidence-Based Complementary and Alternative Medicine, 2011, 1–9.
  14. Mirjalili, M., Moyano, E., Bonfill, M., Cusido, R., & Palazón, J. (2009). Steroidal lactones from Withania somnifera, an ancient plant for novel medicine. Molecules, 14(7), 2373–2393.
  15. National Institutes of Health. (2019, December 5). Ashwagandha. Retrieved from
  16. Pingali, U., Pilli, R., & Fatima, N. (2014). Effect of standardized aqueous extract of Withania somnifera on tests of cognitive and psychomotor performance in healthy human participants. Pharmacognosy Research, 6(1), 12–18.
  17. Roy Chengappa, K., Gannon, J., & Forrest, P. (2014). Subtle changes in thyroid indices during a placebo-controlled study of an extract of Withania somnifera in persons with bipolar disorder. Journal of Ayurveda and Integrative Medicine, 5(4), 241–245.
  18. Sehgal, N., Gupta, A., Valli, R. K., Joshi, S. D., Mills, J. T., Hamel, E., … Ravindranath, V. (2012). Withania somnifera reverses Alzheimer’s disease pathology by enhancing low-density lipoprotein receptor-related protein in liver. Proceedings of the National Academy of Sciences, 109(9), 3510–3515.
  19. Sharma, A. K., Basu, I., & Singh, S. (2018). Efficacy and safety of ashwagandha root extract in subclinical hypothyroid patients: A double-blind, randomized placebo-controlled trial. The Journal of Alternative and Complementary Medicine, 24(3), 243–248.
  20. Singh, N., Bhalla, M., De Jager, P., & Gilca, M. (2011). An overview on ashwagandha: A rasayana (rejuvenator) of ayurveda. African Journal of Traditional, Complementary and Alternative Medicines, 8(5S), 208–213.
  21. Singh, V., Mundkinajeddu, D., Agarwal, A., Nguyen, J., Sudberg, S., Gafner, S., & Blumenthal, M. (2018). Adulteration of ashwagandha (Withania somnifera) roots, and extracts. ABC-AHP-NCNPR Botanical Adulterants Prevention Program.
  22. Ven Murthy, M. R., K. Ranjekar, P., Ramassamy, C., & Deshpande, M. (2010). Scientific basis for the use of Indian ayurvedic medicinal plants in the treatment of neurodegenerative disorders: 1. ashwagandha. Central Nervous System Agents in Medicinal Chemistry, 10(3), 238–246.
  23. Wankhede, S., Langade, D., Joshi, K., Sinha, S. R., & Bhattacharyya, S. (2015). Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial. Journal of the International Society of Sports Nutrition, 12(1), 43.