| 効果 | 減少 |
| 試験方法 | 二重盲検法 |
| 試験期間 | 1-6 ヶ月 |
| 被験者数 | 64 |
| 性別 | 男女 |
| 年齢 | 18-29, 30-44, 45-64 |
| 体型 | 平均 |
この研究の注釈：
300 mg of an ashwagandha extract (“full spectrum”) for 60 days in persons with chronic mental stress was able to improve all tested parameters and reduced serum cortisol by 27.9%.
Naturopathic Care For Anxiety: A Randomized Controlled Trial ISRCTN78958974
| 効果 | 減少 |
| 試験方法 | 二重盲検法 |
| 試験期間 | 1-6 ヶ月 |
| 被験者数 | 75 |
| 性別 | 男女 |
| 年齢 | 45-64, 65+ |
| 体型 | 肥満 |
この研究の注釈：
300 mg ashwagandha (1.5% withanolides) twice daily over the course of 8 weeks in persons with anxiety disorders also given counselling (placebo also given counselling) noted that supplementation was associated with a 56.5% reduction in anxiety symptoms as assessed by BAI while placebo only say a 30.5% reduction.
A Double-blind, Placebo-controlled Evaluation Of The Anxiolytic Efficacy Ff An Ethanolic Extract Of Withania Somnifera
| 効果 | 減少 |
| 試験方法 | 二重盲検法 |
| 試験期間 | 1-6 ヶ月 |
| 被験者数 | 21 |
| 性別 | 男女 |
| 年齢 | 30-44, 45-64 |
この研究の注釈：
Six weeks supplementation of Ashwagandha (250mg twice daily of the root extract) in persons with diagnosed generalized anxiety disorder (mixed anxiety and depression) noted significant improvements in both depression and anxiety symptoms.
Six weeks supplementation of Ashwagandha (250mg twice daily of the root extract) in persons with diagnosed generalized anxiety disorder (mixed anxiety and depression) noted significant improvements in both depression and anxiety symptoms.
This study had a high dropout rate (18 out of 39 persons)