Experts Debate Valerian’s Reputation as “Nature’s Valium”

Valerian, a widely available herbal supplement with a longstanding reputation for promoting sleep and relaxation, has earned the nickname “nature’s Valium” in some circles. However, health experts remain divided on whether this comparison to the prescription sedative is warranted or misleading.

The herbal remedy, derived from the roots of Valeriana officinalis, is commonly included in dietary supplements marketed as mild sedatives and sleep aids in the United States. This flowering plant, native to Europe and Asia but also naturalized in northeastern America, has been used medicinally for centuries to reduce anxiety and stress, improve sleep quality, and address conditions including migraines, fatigue and stomach cramps.

Consumers can find valerian in various forms, including dried roots prepared as teas or tinctures, as well as capsules and tablets made from various plant materials and extracts. While the supplement’s popularity continues to grow in the natural health market, the National Institutes of Health notes that research investigating its effectiveness remains relatively limited.

Dr. Stefan Gafner, chief science officer of the American Botanical Council in Texas, points to some encouraging clinical evidence. A 2020 medical review published in the Journal of Evidence-Based Integrative Medicine found both powdered valerian root and root extracts demonstrated “clear” benefits in treating anxiety. Researchers concluded that valerian could be considered a “safe and effective herb to promote sleep and prevent associated disorders.”

Despite these findings, Dr. Gafner cautions against direct comparisons to diazepam (Valium). “I can understand that both are used to relieve anxiety, but valerian is a much milder ingredient, and is really used for mild cases of anxiety and sleep issues,” he explained. A critical difference lies in their risk profiles—diazepam carries a significant risk of dependence and is generally prescribed only for short-term use, with a “very different” spectrum of potential adverse effects than valerian.

Based on personal experience and scientific evidence, Dr. Gafner does recommend valerian for relieving anxiety and improving sleep. “It is well-tolerated and very safe,” he said, though he noted that some sources advise against driving or operating heavy machinery after taking valerian, similar to warnings given for prescription sleep medications.

Not all health professionals share this enthusiasm. Dr. Joseph Mercola, a board-certified family medicine osteopathic physician and author, believes comparisons to Valium may “exaggerate what the science actually shows.” While acknowledging that valerian contains compounds that appear to enhance calming brain chemicals—particularly GABA, which helps quiet nerve activity—he points to inconsistent research results.

“Some studies do report modest improvements in sleep quality or shorter time to fall asleep, while others find no meaningful difference compared with placebo,” Dr. Mercola noted. Potential side effects include headaches, dizziness, digestive upset and next-day grogginess.

Dr. Mercola advises a more cautious approach. “Because long-term safety studies remain limited, and supplement quality varies widely, you should approach valerian with caution rather than view it as a universal sleep solution,” he said. Instead of relying on herbal sedatives, he recommends addressing the underlying causes of sleep problems through lifestyle adjustments.

These natural approaches include getting bright sunlight during daytime hours to regulate circadian rhythms and ensuring complete darkness at night to support melatonin production. He also suggests certain nutrients that promote relaxation, including magnesium, which helps regulate the nervous system, and supplements like GABA and glycine that may improve sleep quality.

“When you combine sunlight exposure, magnesium, GABA and glycine, you support the biological systems that control sleep instead of relying on a sedating herb with mixed evidence,” Dr. Mercola concluded.

As consumers increasingly turn to natural alternatives for sleep and anxiety issues, the debate around valerian’s effectiveness and appropriate use continues among health professionals, highlighting the importance of personalized approaches to sleep health rather than one-size-fits-all solutions.