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A New Ashwagandha Formulation (Zenroot™) Alleviates Stress and Anxiety Symptoms While Improving Mood and Sleep Quality: A Randomized, Double-Blind, Placebo-Controlled Clinical Study.
Adv Ther. 2025 Oct; 42(10):5238-5254.AT

Abstract

INTRODUCTION

Prolonged exposure to stress may lead to low mood, anxiety, depression, insomnia, and metabolic disorders. Ashwagandha, an established adaptogen, is known to combat stress. We studied the safety and efficacy of Ashwagandha formulation, Zenroot™ (ZEN), containing 1.5% total withanolides on stress, anxiety, mood, and sleep quality in human subjects with non-chronic mild to moderate stress.

METHODS

This was a prospective, randomized, double-blind, parallel, placebo-controlled, clinical interventional study with supplementation duration of 84 days. Ninety subjects were randomly assigned in a 1:1 ratio to receive 125 mg of ZEN or placebo. We measured stress using the Perceived Stress Scale (PSS) score as a primary endpoint. Various secondary endpoints included Mindfield eSense Skin Response (SCR) and Mindfield eSense PULSE Heart Rate Variability (HRV)-Root Mean Square of Successive Differences (RMSSD), and standard deviation of normal NN interval (SDNN), Beck Anxiety Inventory (BAI), Profile of Mood States (POMS), Pittsburgh Sleep Quality Index (PSQI), stress biomarkers of serum cortisol, and salivary alpha amylase (sAA) levels and safety parameters. The study assessments were performed on days 0, 14, 28, 56, and 84.

RESULTS

All 90 randomized subjects completed the study. Mean ± standard error (SE) age of subjects in the ZEN group was 35.5 ± 1.3 years and in the placebo group was 34.5 ± 1.2 years. ZEN 125 mg showed significant (p < 0.05) improvements in PSS, BAI, and PSQI scores on days 28, 56, and 84; SCR on days 14, 28, and 84 and trend (p < 0.1) on day 56; HRV-RMSSD and SDNN on day 14; and POMS on days 56 and 84. No significant differences were observed between the two groups for serum cortisol and sAA. The study product was well tolerated without any safety concerns.

CONCLUSION

We observed significant reductions in both subjective and objective measures of stress with improvement in mood, sleep quality, and occasional anxiety symptoms. ZEN was well tolerated without any related adverse events. Future clinical studies are warranted to evaluate the effect of ZEN on chronically stressed adults.

CLINICAL TRIAL REGISTRATION NUMBER

http://ctri.nic.in/ Identifier:CTRI/2024/03/063786.

Authors+Show Affiliations

, Bengaluru Neuro Center # No. 27/5, 10th Cross, 3rd Main, Margosa Road, Malleshwaram, Bengaluru, Karnataka, 560003, India., Bengaluru Neuro Center # No. 27/5, 10th Cross, 3rd Main, Margosa Road, Malleshwaram, Bengaluru, Karnataka, 560003, India., Santosh Hospital # 6/1, Promenade Road, Near Coles Park, Bengaluru, Karnataka, 560005, India.OmniActive Health Technologies, Phoenix House, T- 8, A Wing 462 Senapati Bapat Marg, Lower Parel, Mumbai, Maharashtra, 400 013, India.OmniActive Health Technologies, Phoenix House, T- 8, A Wing 462 Senapati Bapat Marg, Lower Parel, Mumbai, Maharashtra, 400 013, India.Invitro Research Solutions Private Limited, # 22 and 23, Kodigehalli Main Road, Sahakarnagar Post, Hebbal, Bengaluru, Karnataka, 560092, India.Invitro Research Solutions Private Limited, # 22 and 23, Kodigehalli Main Road, Sahakarnagar Post, Hebbal, Bengaluru, Karnataka, 560092, India.Invitro Research Solutions Private Limited, # 22 and 23, Kodigehalli Main Road, Sahakarnagar Post, Hebbal, Bengaluru, Karnataka, 560092, India. abhijith@ivrs.org.in.

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

40875185

Citation

Mahadevan, Manasvi, et al. "A New Ashwagandha Formulation (Zenroot™) Alleviates Stress and Anxiety Symptoms While Improving Mood and Sleep Quality: a Randomized, Double-Blind, Placebo-Controlled Clinical Study." Advances in Therapy, vol. 42, no. 10, 2025, pp. 5238-5254.
Mahadevan M, Gopukumar K, Gupta R, et al. A New Ashwagandha Formulation (Zenroot™) Alleviates Stress and Anxiety Symptoms While Improving Mood and Sleep Quality: A Randomized, Double-Blind, Placebo-Controlled Clinical Study. Adv Ther. 2025;42(10):5238-5254.
Mahadevan, M., Gopukumar, K., Gupta, R., Morde, A., Patni, P., Srinivas, S. S., Bhuvanendran, A., & Phanindra, A. (2025). A New Ashwagandha Formulation (Zenroot™) Alleviates Stress and Anxiety Symptoms While Improving Mood and Sleep Quality: A Randomized, Double-Blind, Placebo-Controlled Clinical Study. Advances in Therapy, 42(10), 5238-5254. https://doi.org/10.1007/s12325-025-03327-z
Mahadevan M, et al. A New Ashwagandha Formulation (Zenroot™) Alleviates Stress and Anxiety Symptoms While Improving Mood and Sleep Quality: a Randomized, Double-Blind, Placebo-Controlled Clinical Study. Adv Ther. 2025;42(10):5238-5254. PubMed PMID: 40875185.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A New Ashwagandha Formulation (Zenroot™) Alleviates Stress and Anxiety Symptoms While Improving Mood and Sleep Quality: A Randomized, Double-Blind, Placebo-Controlled Clinical Study. AU - Mahadevan,Manasvi, AU - Gopukumar,Kumarpillai, AU - Gupta,Ruchi, AU - Morde,Abhijeet, AU - Patni,Paras, AU - Srinivas,Sahitya Sarvamangala, AU - Bhuvanendran,Arun, AU - Phanindra,Abhijith, Y1 - 2025/08/28/ PY - 2025/5/27/received PY - 2025/7/21/accepted PY - 2025/9/27/medline PY - 2025/8/28/pubmed PY - 2025/8/28/entrez PY - 2025/8/28/pmc-release KW - Anxiety KW - Ashwagandha KW - Mood KW - Sleep quality KW - Stress KW - Withanolides KW - Zenroot™ SP - 5238 EP - 5254 JF - Advances in therapy JO - Adv Ther VL - 42 IS - 10 N2 - INTRODUCTION: Prolonged exposure to stress may lead to low mood, anxiety, depression, insomnia, and metabolic disorders. Ashwagandha, an established adaptogen, is known to combat stress. We studied the safety and efficacy of Ashwagandha formulation, Zenroot™ (ZEN), containing 1.5% total withanolides on stress, anxiety, mood, and sleep quality in human subjects with non-chronic mild to moderate stress. METHODS: This was a prospective, randomized, double-blind, parallel, placebo-controlled, clinical interventional study with supplementation duration of 84 days. Ninety subjects were randomly assigned in a 1:1 ratio to receive 125 mg of ZEN or placebo. We measured stress using the Perceived Stress Scale (PSS) score as a primary endpoint. Various secondary endpoints included Mindfield eSense Skin Response (SCR) and Mindfield eSense PULSE Heart Rate Variability (HRV)-Root Mean Square of Successive Differences (RMSSD), and standard deviation of normal NN interval (SDNN), Beck Anxiety Inventory (BAI), Profile of Mood States (POMS), Pittsburgh Sleep Quality Index (PSQI), stress biomarkers of serum cortisol, and salivary alpha amylase (sAA) levels and safety parameters. The study assessments were performed on days 0, 14, 28, 56, and 84. RESULTS: All 90 randomized subjects completed the study. Mean ± standard error (SE) age of subjects in the ZEN group was 35.5 ± 1.3 years and in the placebo group was 34.5 ± 1.2 years. ZEN 125 mg showed significant (p < 0.05) improvements in PSS, BAI, and PSQI scores on days 28, 56, and 84; SCR on days 14, 28, and 84 and trend (p < 0.1) on day 56; HRV-RMSSD and SDNN on day 14; and POMS on days 56 and 84. No significant differences were observed between the two groups for serum cortisol and sAA. The study product was well tolerated without any safety concerns. CONCLUSION: We observed significant reductions in both subjective and objective measures of stress with improvement in mood, sleep quality, and occasional anxiety symptoms. ZEN was well tolerated without any related adverse events. Future clinical studies are warranted to evaluate the effect of ZEN on chronically stressed adults. CLINICAL TRIAL REGISTRATION NUMBER: http://ctri.nic.in/ Identifier:CTRI/2024/03/063786. SN - 1865-8652 UR - https://www.unboundmedicine.com/medline/citation/40875185/A_New_Ashwagandha_Formulation_ DB - PRIME DP - Unbound Medicine ER -