The Effects of Rhodiola rosea L. Extract on Anxiety, Stress, Cognition and Other Mood Symptoms.
This trial evaluated the impact of a Rhodiola rosea L. extract on self-reported anxiety, stress, cognition, and other mood symptoms. Eighty mildly anxious participants were randomized into two different groups of either Rhodiola rosea L (2 × 200 mg dose Vitano®, 1 tablet taken before breakfast and 1tablet before lunch) or a control condition (no treatment). Self-report measures and cognitive tests were completed at four testing sessions over a period of 14 days. Relative to the controls, the experimental group demonstrated a significant reduction in self-reported, anxiety, stress, anger, confusion and depression at 14 days and a significant improvements in total mood. No relevant differences in cognitive performance between the groups were observed. Rhodiola rosea L (Vitano®) presented a favourable safety tolerability profile. Although this was a non-placebo controlled trial, it is unlikely that the findings were the result of placebo effects as changes appeared gradual and were specific to certain psychological measures. However, we cannot determine a causal relationship; further investigations are recommended to support the effects of Rhodiola rosea L. extract on stress related symptoms.
School of Psychology, University of Surrey, Guildford, Surrey, UK.
Mark
M
Cropley
School of Psychology, University of Surrey, Guildford, Surrey, UK.
Adrian P
AP
Banks
School of Biosciences and Medicine, University of Surrey, Guildford, Surrey, UK.
Julia
J
Boyle
D000328:Adult; D000339:Affect / Q000187:drug effects*; D001007:Anxiety / Q000188:drug therapy*; D003071:Cognition / Q000187:drug effects*; D003863:Depression / Q000188:drug therapy; D005260:Female; D006801:Humans; D008297:Male; D010936:Plant Extracts / Q000494:pharmacology*; D029771:Rhodiola / Q000009:adverse effects*; D013315:Stress, Psychological / Q000188:drug therapy*
D010936:Plant Extracts
Anxiety; Rhodiola rosea L; Stress