SupplementScience

Best Supplements for Anxiety

Prevalence: 40 million US adults affected annually (19.1% of population)

DJP
Reviewed by , MD, Board Certified Internal Medicine

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

TL;DR — Quick Answer

The most evidence-backed supplements for anxiety are magnesium (200-400mg glycinate), ashwagandha (300mg KSM-66 twice daily), and L-theanine (200-400mg). All three have multiple randomized controlled trials supporting their use, with ashwagandha showing the strongest effect size.

Overview

Anxiety disorders affect approximately 40 million adults in the United States annually, making them the most common mental health condition. While supplements should not replace professional treatment for diagnosed anxiety disorders, several natural compounds have shown meaningful anxiolytic effects in clinical trials.

Top Evidence-Based Supplements for Anxiety

#SupplementTypical DoseEvidence
1Ashwagandha (KSM-66)300mg twice dailyStrong
2Magnesium Glycinate200-400mg dailyStrong

Detailed Ingredient Guides

Frequently Asked Questions

What is the best supplement for anxiety?

Based on clinical evidence, ashwagandha (KSM-66 extract at 300mg twice daily) has the strongest effect size for anxiety reduction, with a 44% improvement on standardized anxiety scales. Magnesium glycinate (200-400mg) and L-theanine (200mg) are also well-supported and can be combined with ashwagandha for enhanced effects.

Can supplements replace anxiety medication?

Supplements should not replace prescribed anxiety medications without medical guidance. However, for mild to moderate anxiety, supplements like ashwagandha and magnesium have shown clinically meaningful effects comparable to low-dose anxiolytics in some studies. Always consult your healthcare provider before making changes to prescribed medications.

References

  1. (). An Alternative Treatment for Anxiety: A Systematic Review of Human Trial Results. Journal of Alternative and Complementary Medicine. DOI