Thorne Review 2026
Practitioner-Grade Supplements
Overview
Thorne Research is one of the most trusted names in the supplement industry, known for their commitment to science-based formulations and rigorous quality testing. They are a favorite among healthcare practitioners and are used by multiple professional sports teams. Thorne was the first supplement company to partner with Mayo Clinic for research and is NSF Certified for Sport.
Certifications & Testing
Every batch undergoes four rounds of testing: raw material identity, potency, heavy metals, and microbial contamination. They use their own in-house lab with HPLC, ICP-MS, and other analytical equipment.
Thorne owns and operates their manufacturing facility in South Carolina. All products are made in-house, giving them complete control over quality. The facility is regularly inspected by NSF International and the FDA.
Top Products
| Product | Category | Price | Rating |
|---|---|---|---|
| Basic Nutrients 2/Day | Multivitamin | $35 | 4.8 |
| Magnesium Bisglycinate | Minerals | $28 | 4.9 |
| Vitamin D/K2 Liquid | Vitamins | $22 | 4.8 |
| Creatine Monohydrate | Sports | $32 | 4.7 |
| FloraMend Prime Probiotic | Gut Health | $40 | 4.6 |
Pros
- Exceptional third-party testing and transparency
- NSF Certified for Sport (trusted by pro athletes)
- Science-based formulations with bioavailable forms
- Own manufacturing facility with complete quality control
- No unnecessary fillers, artificial colors, or preservatives
- Personalized supplement recommendations via at-home testing
Cons
- Premium pricing — significantly more expensive than budget brands
- Some products have lower doses than competitors at similar prices
- Limited flavor options for powdered products
- Subscription model can be confusing
Our Verdict
Thorne is the gold standard for supplement quality and testing. If you want the highest confidence that what's on the label is actually in the bottle — and nothing else — Thorne is hard to beat. The premium price is justified by their rigorous testing protocols and clean formulations. Best for health-conscious consumers who prioritize quality over cost.