Is Thorne Worth It? Thorne Supplements Reviewed
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We track 34 Thorne products. 23 of them, 68%, list a third-party certification. Thorne products we confirmed in the NSF registry (NSF/ANSI 173): Magnesium Glycinate, Basic Nutrients 2/Day, Vitamin D3 + K2 Liquid, Biotin-8, Theanine, Zinc Picolinate 30mg, Berberine 1000mg, Vitamin K, Glycine, Rhodiola, L-Glutamine, NiaCel 400, Quercetin Phytosome, PharmaGABA-100, S.A.T. and Creatine. For every other Thorne product, the listing says NSF Certified for Sport and we did not find it in a public registry.
Thorne prices above the category median in 33 of 34 products. The typical difference is about 123%. To check a specific product, search the NSF registry.
Thorne Report Card
Three things we can measure from our own catalog.
| Dimension | What we found | Caveat |
|---|---|---|
| Third-party certification | 23 of 34 products (68%) list a certification, mostly NSF Certified for Sport | Based on the certification each listing states; only the products named above are registry-confirmed |
| Cost vs category median | Priced above the category median in 33 of 34 products (97%), typical premium near 123% | Cost per day, not a measure of a better product; some of that gap buys real testing |
| Category coverage | 33 categories we track, from creatine to methylfolate | Limited to categories we independently compare; not Thorne's full catalog |
Certification and Price
Most Thorne listings mention NSF. NSF programs test finished products against their labels; confirm any specific product in the NSF registry.
See our Thorne vs Doctor's Best magnesium glycinate comparison for cost per day and certification status side by side.
In our creatine data, Thorne Creatine runs $0.49 a day, and other creatine products run about $0.13 to $0.30 a day (as of our last price check).
A listing statement is not a registry check. Read the specific claim on each product, and confirm it in the NSF registry.
11 Thorne products we track state no independent certification: Thorne Ashwagandha (Shoden, 120mg, 30ct), Thorne Basic B Complex (60 Capsules), Thorne Beta-Alanine-SR CarnoSyn (NSF Sport), Thorne Copper Bisglycinate 2mg, Thorne Daily Greens Plus, Mint (30 servings), Thorne Magnesium Glycinate (90 capsules), Thorne 5-MTHF (Methylfolate) 1 mg, Thorne Quercetin Phytosome, Thorne Rhodiola 100 mg, Thorne Pyridoxal 5'-Phosphate (180 Capsules), Thorne Vitamin C with Flavonoids.
NSF certification matters most if you are a drug-tested athlete or competitor.
Thorne Products We Track
All 34 Thorne products we track, sorted by cost per effective daily dose. Prices are as of our last check on . Cost per day ranges from $0.11 to $2.40.
| Product | Cost/Day | Certification (as labelled) |
|---|---|---|
| Thorne Vitamin D3 + K2 Liquid | $0.11 | In NSF/ANSI 173 registry NSF Certified for Sport |
| Thorne Betaine HCl & Pepsin (225ct) | $0.21 | Listing says NSF Certified for Sport (per brand positioning) |
| Thorne Iron Bisglycinate 25 mg | $0.27 | In NSF Certified for Sport registry NSF Certified for Sport |
| Thorne Pyridoxal 5'-Phosphate (180 Capsules) | $0.31 | None stated None |
| Thorne Copper Bisglycinate 2mg | $0.32 | None stated TRAACS-chelate (Thorne-stated); no independent COA verified for this build |
| Thorne Chromium Picolinate 500 mcg (60 Capsules) | $0.33 | Listing says Third-party certified |
| Thorne Zinc Picolinate 30mg (60ct) | $0.33 | In NSF Certified for Sport registry NSF Certified for Sport |
| Thorne 5-MTHF (Methylfolate) 1 mg | $0.40 | None stated NSF Certified for Sport (brand-stated; not confirmed in the public registry) |
| Thorne Rhodiola 100 mg | $0.40 | In NSF/ANSI 173 registry cGMP; no third-party COA |
| Thorne Vitamin B12 as Methylcobalamin 1 mg | $0.40 | In NSF Certified for Sport registry NSF Certified for Sport |
| Thorne Basic B Complex (60 Capsules) | $0.45 | None stated NSF Certified (brand-stated; not confirmed in the public registry) |
| Thorne Biotin-8 (8000 mcg) | $0.47 | In NSF/ANSI 173 registry NSF Certified for Sport |
| Thorne Creatine (90 servings) | $0.49 | In NSF/ANSI 173 registry NSF Certified for Sport |
| Thorne Vitamin C with Flavonoids | $0.51 | None stated NSF Certified for Sport (brand-stated; not confirmed in the public registry) |
| Thorne Vitamin K (K1 + MK-4 + MK-7) | $0.52 | In NSF/ANSI 173 registry Third-party tested |
| Thorne Acetyl-L-Carnitine 500 mg (60 Capsules) | $0.53 | Listing says Third-party certified (Thorne / NSF) |
| Thorne Milk Thistle Phytosome (Siliphos) (90 Capsules) | $0.54 | Listing says Third-party certified (Thorne) |
| Thorne PharmaGABA-100 | $0.57 | In NSF/ANSI 173 registry NSF Certified for Sport |
| Thorne Alpha-Lipoic Acid 300 mg (60 Caps) | $0.68 | Listing says NSF Certified for Sport |
| Thorne Ashwagandha (Shoden, 120mg, 30ct) | $0.73 | None stated NSF Certified for Sport (brand-stated; not confirmed in the public registry) |
| Thorne L-Glutamine Powder (513 g, 90 servings) | $0.74 | In NSF/ANSI 173 registry NSF Certified for Sport |
| Thorne Glycine (250 capsules) | $0.74 | In NSF/ANSI 173 registry Third-party certified |
| Thorne Theanine (200mg, 90ct) | $0.77 | In NSF/ANSI 173 registry NSF Certified for Sport |
| Thorne Quercetin Phytosome | $0.77 | In NSF/ANSI 173 registry None independently confirmed (Thorne brand-level manufacturing standards) |
| Thorne S.A.T. — Milk Thistle + Artichoke + Turmeric (60 Capsules) | $0.78 | In NSF/ANSI 173 registry Third-party certified (Thorne) |
| Thorne Magnesium Glycinate (90 capsules) | $0.96 | In NSF/ANSI 173 registry NSF/ANSI 173 |
| Meriva Curcumin Phytosome by Thorne | $1.20 | Listing says NSF Certified for Sport |
| Thorne Basic Nutrients 2/Day | $1.20 | In NSF/ANSI 173 registry NSF Certified for Sport |
| Thorne NiaCel 400 | $1.23 | In NSF Certified for Sport registry NSF Certified for Sport (listing 1423140, 60-capsule pack listed, checked 2026-10-01) |
| Thorne Berberine 1000mg | $1.47 | In NSF/ANSI 173 registry NSF Certified for Sport |
| Thorne Beta-Alanine-SR CarnoSyn (NSF Sport) | $1.92 | None stated NSF Certified for Sport (independent) (brand-stated; not confirmed in the public registry) |
| Thorne Whey Protein Isolate (30 servings) | $2.17 | In NSF Certified for Sport registry NSF Certified for Sport, NSF/ANSI 173 |
| Thorne Whey Protein Isolate (Vanilla, 30 servings) | $2.17 | In NSF Certified for Sport registry NSF Certified for Sport |
| Thorne Daily Greens Plus, Mint (30 servings) | $2.40 | In NSF/ANSI 173 registry NSF/ANSI 173 |
Frequently Asked Questions
How many Thorne products state a third-party certification?
We track 34 Thorne products. 23 of them, 68%, list a third-party certification, mostly NSF Certified for Sport. Thorne products we confirmed in the NSF registry (NSF/ANSI 173): Magnesium Glycinate, Basic Nutrients 2/Day, Vitamin D3 + K2 Liquid, Biotin-8, Theanine, Zinc Picolinate 30mg, Berberine 1000mg, Vitamin K, Glycine, Rhodiola, L-Glutamine, NiaCel 400, Quercetin Phytosome, PharmaGABA-100, S.A.T. and Creatine. For every other Thorne product, the listing says NSF Certified for Sport and we did not find it in a public registry. Thorne sits above the category median in 33 of those 34 products.
How does Thorne pricing compare with the category median?
Thorne prices above the category median in 97% of the products we track. The typical premium is about 123%. In our Thorne vs Doctor's Best magnesium comparison, both are magnesium glycinate. Thorne has an NSF/ANSI 173 listing and less magnesium per capsule, and costs about twice as much per day.
When does a Thorne certification matter?
NSF Certified for Sport matters most if you are a drug-tested athlete. It also matters when the delivery form has its own evidence. Examples: Meriva curcumin, Siliphos milk thistle. For a plain ingredient with no special claim, a cheaper certified competitor usually exists nearby.