Best Sleep & Relaxation Supplements

Top-rated sleep & relaxation supplements ranked by quality score. Last updated: Mar 2026.

Advance Physician Formulas L-Theanine, 200 mg, 60 Capsules
Advance Physician Formulas L-Theanine, 200 mg, 60 Capsules
Product 100 Brand 61
Nature's Way L-Theanine, 60 Vegan Capsules (100 mg per Capsule)
Nature's Way L-Theanine, 60 Vegan Capsules (100 mg per Capsule)
Product 100 Brand 95
DaVinci Laboratories L-Theanine, 200 mg, 60 Capsules
DaVinci Laboratories L-Theanine, 200 mg, 60 Capsules
Product 100 Brand 82
DaVinci Laboratories L-Theanine, 200 mg, 120 Capsules
DaVinci Laboratories L-Theanine, 200 mg, 120 Capsules
Product 100 Brand 82
Source Naturals L-Theanine, 200 mg, 120 Capsules
Source Naturals L-Theanine, 200 mg, 120 Capsules
Product 100 Brand 66
The Vitamin Shoppe L-Theanine, 100 mg, 120 Vegetable Capsules
The Vitamin Shoppe L-Theanine, 100 mg, 120 Vegetable Capsules
Product 100 Brand 87
The Vitamin Shoppe L-Theanine, 200 mg, 60 Vegetable Capsules
The Vitamin Shoppe L-Theanine, 200 mg, 60 Vegetable Capsules
Product 100 Brand 87
Source Naturals Serene Science®, L-Theanine, 200 mg, 60 Capsules
Source Naturals Serene Science®, L-Theanine, 200 mg, 60 Capsules
Product 100 Brand 66
The Vitamin Shoppe L-Theanine, 100 mg, 60 Vegetable Capsules
The Vitamin Shoppe L-Theanine, 100 mg, 60 Vegetable Capsules
Product 100 Brand 87
Pure Encapsulations L-Theanine, 60 Capsules (200 mg per Capsule)
Pure Encapsulations L-Theanine, 60 Capsules (200 mg per Capsule)
Product 100 Brand 77

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.