Valerian Root (Valeriana officinalis)

Evidence-based guide to Valerian Root: benefits, dosage, safety and interactions.

Evidence

Moderate: 2006 meta-analysis (16 RCTs) supportive though not definitive; 2011 RCT (n=100) in postmenopausal women showed significant Pittsburgh Sleep Quality Index improvement.

Traditional use and mechanism

Sleep-promoting; anxiolytic; nervous system calming. Used in ancient Greek medicine (Hippocrates, Galen) and continuously through European herbal medicine. Primary herb for progesterone-withdrawal sleep disruption in perimenopause.

Safety

Well-tolerated in trials. No dependency or rebound insomnia documented — significant safety advantage over pharmaceutical sedatives. Most common side effects: vivid dreams, mild morning grogginess in first 1–2 weeks (typically resolves). Non-habit-forming: GABA-A modulation without direct receptor activation prevents tolerance and dependence.