Thorne
Thorne is an established, practitioner-origin supplement brand with a broad catalog spanning foundational vitamins, minerals, sports nutrition, and specialty formulas — known for exact-amount labeling and per-product NSF certifications covering a large share of its catalog.
Established, practitioner-origin supplement brand with a broad catalog spanning foundational vitamins, minerals, sports nutrition, and specialty formulas — especially appealing to shoppers consolidating several supplement purchases with one recognized brand, with independently documented NSF certification on selected products.
Thorne is a US-based brand founded in 1984 that built its reputation in the healthcare-practitioner channel and now sells direct to consumers, with catalog depth across foundational vitamins, minerals, sports nutrition, and specialty formulas. Its standout, independently checkable strength is product-level NSF coverage: NSF's databases listed roughly 20 or more Thorne formulas as Certified for Sport and 190 finished products certified to NSF/ANSI 173 at the research date. Exact-amount, no-proprietary-blend labeling applies across the line, and the company reports a multi-stage in-house testing program consistent with those certifications (the in-house program is the company's own reporting). Pricing is product-dependent: the foundational multivitamin line carries a clear premium, while single-ingredient staples like creatine and magnesium glycinate were priced within the typical range for comparable tested competitors.
Catalog at a glance
This page covers 154 Thorne products available to browse across 21 categories, making it practical to compare options and cover several supplement needs from one brand.
Why shoppers choose Thorne
Sports performance (NSF Certified for Sport line)
A defined subset of formulas carries NSF Certified for Sport status — the certification most relevant to drug-tested athletes — independently confirmable per product in NSF's database.
See ranked picks in this category →Foundational micronutrients
Broad catalog depth in multivitamins, magnesium, vitamin D, and B-complex, with several products offered in both standard and NSF Certified for Sport versions and exact-amount labeling across the line.
See ranked picks in this category →Practitioner and specialty formulas
Thorne's original practitioner-channel history is reflected in catalog depth for specialty formulas, making it straightforward to combine practitioner-recommended products and everyday staples in a single order.
Who it's best for
Best for
- Drug-tested or competitive athletes who need an NSF Certified for Sport product and verify their exact SKU on NSF's list
- Buyers who want exact-amount, no-proprietary-blend labels on foundational micronutrients
- People whose healthcare practitioner recommends or dispenses Thorne formulas
- Buyers comfortable paying a premium for the foundational multivitamin line in exchange for the certification coverage above
Good to know before you choose
- If you only need a basic, non-certified supplement at the lowest price, compare per-serving costs — Thorne's strongest value is on its single-ingredient staples rather than the multivitamin line
- If a brand-wide facility certification is your main purchase driver, check the certifiers' public databases for the specific claim — this research could not confirm those brand-wide claims (see limitations)
- For a specific specialty formula, check the clinical evidence for that product — brand reputation is not a substitute for product-level evidence
Pricing & value
Pricing is product-dependent rather than uniformly premium. Single-ingredient staples such as creatine and magnesium glycinate were priced within the typical range for comparable tested competitors at the research date, while the foundational multivitamin line carries a clear premium that buyers weigh against its NSF-certified options. Price-check the specific product rather than assuming a brand-wide premium.
- Basic Nutrients 2/Day (30 servings): Around $36 standard / $40 NSF Certified for Sport at the research date — roughly 2-3x mainstream multivitamin pricing, mid-pack among premium competitors.
- Creatine, NSF Certified for Sport (90 servings): Around $0.49 per serving at the research date — approximately in line with mainstream micronized creatine on a per-serving basis.
- Magnesium Bisglycinate (90 capsules): Around $26 at the research date — within the typical range for comparable chelated magnesium products.
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Explore products from Thorne
Browse all available products below — filter by category to narrow the list.
Browse Products
VitaminsCapsuleTHORNE - Vitamin D-5,000 - Vitamin D3 Supplement - Supports Healthy Bones, Teeth & Muscles, Plus Car
- Vitamin D-5,000
Vitamin D-5,000 — Vitamin D3 Supplement - Supports Healthy Bones, Teeth & Muscles, Plus Cardiovascular & Immune Function* - NSF Certified for Sport -
THORNE - Vitamin D + K2 Liquid with a Metered Dispenser - Vitamins D3 & K2 to Support Healthy Bones
- Vitamin D + K2 Liquid with a Metered Dispenser
Vitamin D + K2 Liquid with a Metered Dispenser — Vitamins D3 & K2 to Support Healthy Bones & Muscles* - 1 Fl Oz (30 ml) - 600 Servings
VitaminsTHORNE - Basic Prenatal - Well-Researched Folate Multi for Pregnant & Nursing Women - Includes 18 Vi
- Basic Prenatal
Basic Prenatal — Well-Researched Folate Multi for Pregnant & Nursing Women - Includes 18 Vitamins & Minerals, Plus Choline - Third-Party Certified - G
VitaminsTHORNE - Basic B-Complex - Tissue-Ready Vitamin B Complex Supplement with Choline - Supports Cellula
- Basic B-Complex
Basic B-Complex — Tissue-Ready Vitamin B Complex Supplement with Choline - Supports Cellular Energy Production, Brain Health & Red Blood Cell Formatio
VitaminsTHORNE - Stress B-Complex - Vitamins B2, B6, B12 & Folate in Highly-Absorbable and Active Forms - Ex
- Stress B-Complex
Stress B-Complex — Vitamins B2, B6, B12 & Folate in Highly-Absorbable and Active Forms - Extra Vitamin B5 for Adrenal Support, Stress Management & Imm
VitaminsCapsuleTHORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron, Folate, B and C V
- Advanced Iron Complex
Advanced Iron Complex — Complete Blood Support Formula* - Elemental Iron, Folate, B and C Vitamins for Optimal Absorption - Chelated Iron Supplement -
VitaminsCapsuleTHORNE - B-Complex #12 - Vitamin B Complex with Choline Supplement - Supports Cellular Energy Produc
- B-Complex #12
B-Complex #12 — Vitamin B Complex with Choline Supplement - Supports Cellular Energy Production & a Healthy Nervous System* - Third-Party Certified -
VitaminsTHORNE - 5-MTHF - Methylfolate (Active B9 Folate) Supplement - Supports Cardiovascular Health, Fetal
1mg · - 5-MTHF
5-MTHF — Methylfolate (Active B9 Folate) Supplement - Supports Cardiovascular Health, Fetal Development, Nerve Health, Methylation & Homocysteine Leve
VitaminsTHORNE - Vitamin D3 Supplement - Supports Healthy Bones, Teeth, Muscles, Cardiovascular & Immune Fun
1,000 IU · - Vitamin D3 Supplement
Vitamin D3 Supplement — Supports Healthy Bones, Teeth, Muscles, Cardiovascular & Immune Function* - Gluten, Dairy & Soy-Free - 1,000 IU - 90 Servings
THORNE - Vitamin B12 - as Methylcobalamin - Supports Heart & Nerve Health, Blood Cell Function, Rest
- Vitamin B12
Vitamin B12 — as Methylcobalamin - Supports Heart & Nerve Health, Blood Cell Function, Restful Sleep & Methylation* - Third-Party Certified - Gluten,
VitaminsTHORNE - Vitamin C 500 mg - Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Supports Immu
500 mg · - Vitamin C
Vitamin C 500 mg — Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Supports Immune System, Cellular Energy Production & Collagen Production
VitaminsCapsuleTHORNE - Vitamin D-10,000 - Vitamin D3 Supplement - Supports Healthy Bones, Teeth & Muscles, Plus Ca
- Vitamin D-10,000
Vitamin D-10,000 — Vitamin D3 Supplement - Supports Healthy Bones, Teeth & Muscles, Plus Cardiovascular & Immune Function* - Third-Party Certified - G
VitaminsCapsuleTHORNE - Multi-Vitamin Elite - Daily Nutritional Supplement - Two Formulas Support Cellular Energy P
- Multi-Vitamin Elite
Multi-Vitamin Elite — Daily Nutritional Supplement - Two Formulas Support Cellular Energy Production, Restful Sleep & More* - Third-Party Certified -
VitaminsCapsuleTHORNE - Niacinamide - Non-Flushing Form of Vitamin B3 - Supports Skin Health & Provides Cellular Pr
- Niacinamide
Niacinamide — Non-Flushing Form of Vitamin B3 - Supports Skin Health & Provides Cellular Protection* - Niacin Supplement - Third-Party Certified - Glu
VitaminsCapsuleTHORNE - Women's Multi 50+ - Comprehensive Daily Multi with Vitamins A, B6, B12, C, D, E, K, Zinc &
- Women's Multi 50+
Women's Multi 50+ — Comprehensive Daily Multi with Vitamins A, B6, B12, C, D, E, K, Zinc & More - Support Heart, Brain, Bone & Immune Health* - Third-
VitaminsTHORNE - Methyl-Guard Plus - Active Folate (5-MTHF) with Vitamins B2, B6 & B12 - Supports Methylatio
- Methyl-Guard Plus
Methyl-Guard Plus — Active Folate (5-MTHF) with Vitamins B2, B6 & B12 - Supports Methylation & Healthy Level of Homocysteine* - Gluten, Dairy & Soy-Fr
VitaminsCapsuleTHORNE - Vitamin K - Vitamins K1 and K2 (as MK-4 and MK-7) Capsule Supplement - Supports Strong Bone
- Vitamin K
Vitamin K — Vitamins K1 and K2 (as MK-4 and MK-7) Capsule Supplement - Supports Strong Bones* - Clinically Studied Ingredients - Third-Party Certified
VitaminsLiquidTHORNE - Vitamin D Liquid - Vitamin D Supplement - Supports Healthy Bones and Muscles, Cardiovascula
- Vitamin D Liquid
Vitamin D Liquid — Vitamin D Supplement - Supports Healthy Bones and Muscles, Cardiovascular Health & Immune Function* - 1 Fl Oz (30 ml) - 600 Serving
VitaminsCapsuleTHORNE - Biotin - Vitamin B7 Supplement for Healthy Hair, Nails, Skin & Metabolism - Supports Nerve
- Biotin
Biotin — Vitamin B7 Supplement for Healthy Hair, Nails, Skin & Metabolism - Supports Nerve Health* - Third-Party Certified - Gluten, Dairy & Soy-Free
VitaminsTHORNE - B-Complex #6 - Vitamin B Complex with Active Forms of Essential B Vitamins & Extra B6-60 Se
- B-Complex #6
B-Complex #6 — Vitamin B Complex with Active Forms of Essential B Vitamins & Extra B6-60 Servings
VitaminsCapsuleTHORNE - Men's Multi 50+ - Comprehensive Daily Multi with Vitamins A, B6, B12, C, D, E, Zinc & More
- Men's Multi 50+
Men's Multi 50+ — Comprehensive Daily Multi with Vitamins A, B6, B12, C, D, E, Zinc & More - Support Heart, Brain, Prostate, Muscle & Immune Health* -
VitaminsCapsuleTHORNE - Thyroid Health Complex - Thyroid Cofactors for Thyroid Function Support* - Vitamins B12, C
- Thyroid Health Complex
Thyroid Health Complex — Thyroid Cofactors for Thyroid Function Support* - Vitamins B12, C & E, Ashwagandha, Iodine, Zinc, Selenium, Copper & L-Tyrosi
VitaminsTHORNE - 5-MTHF - Methylfolate (Active B9 Folate) Supplement - Supports Cardiovascular Health, Fetal
5mg · - 5-MTHF
5-MTHF — Methylfolate (Active B9 Folate) Supplement - Supports Cardiovascular Health, Fetal Development, Nerve Health, Methylation & Homocysteine Leve
THORNE - 5-HTP - Contains Vitamin B6 - Serotonin Support for Sleep & Stress Management* - 5-Hydroxyt
- 5-HTP
5-HTP — Contains Vitamin B6 - Serotonin Support for Sleep & Stress Management* - 5-Hydroxytryptophan Supplement - Third-Party Certified - Gluten, Dair
Quality & transparency details
NSF Certified for Sport (listed products)
Specific productsCertified — listed products onlyNSF's certified-products database listed roughly 20+ Thorne formulas (about 50 SKU-level entries) at the research date. Certification applies only to the specific products listed in NSF's database, not the full catalog. Drug-tested athletes should confirm their exact product and lot on nsfsport.com before purchase.
NSF/ANSI 173 dietary-supplement certification (190 products)
Specific productsCertified — listed products onlyNSF's public listing database showed 190 Thorne finished products certified to NSF/ANSI 173 (label-content and contaminant testing) at the research date. This is a per-product certification covering much of the catalog; it is not a blanket brand-wide guarantee, and coverage can change.
In-house multi-stage testing
Brand-wideCompany-reportedThorne states it runs four rounds of testing (raw-material identity and purity, in-process, finished-product, and stability testing) in two in-house laboratories. This is the company's own description of its process, separate from — and not a substitute for — the independent NSF product certifications above.
Full-disclosure labeling (no proprietary blends)
Brand-wideCompany-reportedThorne states that its labels disclose exact ingredient amounts and that it excludes a published list of fillers, additives, and allergens. For the NSF-certified subset, label accuracy is additionally checked as part of certification testing.
Our evaluation criteria
NSF Certified for Sport applies to listed athletic products; 190 products are certified to NSF/ANSI 173 per NSF's database. The company reports additional in-house testing.
Every ingredient and dose disclosed on the label. No hidden formulas.
Label doses aligned with amounts used in published clinical studies. The company reports research collaborations in formulation development.
Certificates of Analysis available. Products tested for identity, potency, purity, and composition.
What to check before buying
Buy from authorized sellers
Thorne has litigated against at least one unauthorized Amazon reseller it accused of selling expired or tampered product (2021 federal filing). Buying from Thorne directly, authorized retailers, or the brand's own storefront listing reduces the risk of diverted or mishandled product.
Certification is per-product, and priced accordingly
NSF Certified for Sport and NSF/ANSI 173 apply to listed products only, and several popular formulas exist in both certified and non-certified versions at different prices. If certification matters to your purchase, check the specific product before buying.
What this research does not establish
- Snapshot research dated 2026-07-02; certifications, pricing, and catalog coverage change — re-verify specifics before relying on them.
- Widely repeated brand-wide facility-certification claims (NSF/ANSI 455-2 GMP facility registration; current TGA listings) could not be confirmed in the certifiers' public databases during this research. That is an unverified status, not a finding that the claims are false.
- Company statements about internal testing and labeling policy are reported here as company statements; this research did not independently audit them.
- Individual product efficacy, dosing, and clinical evidence were out of scope for this brand-level profile.
Research last updated: 2026-07-02
Sources
- 1.NSF Certified for Sport product database (search: Thorne)Specific productsCertified — listed products only
NSF's certified-products database lists roughly 20+ Thorne formulas (about 50 SKU-level entries) under NSF Certified for Sport
Independent certifier · Accessed 2026-07-02
- 2.NSF certified dietary supplements listing (company code 4H980, Standard 173)Specific productsCertified — listed products only
190 Thorne finished products listed as certified to NSF/ANSI 173 across multiple manufacturing/distribution locations
Independent certifier · Accessed 2026-07-02
Thorne states it performs four rounds of testing in two in-house labs at its Summerville, SC facility
Company · Accessed 2026-07-02
Thorne states its labels disclose exact ingredient amounts and exclude a published list of fillers/additives/allergens
Company · Accessed 2026-07-02
Basic Nutrients 2/Day retail pricing approximately $36 (standard) / $40 (NSF Certified for Sport) at research date
Retailer · Accessed 2026-07-02
- 6.Vitacost product listing; Muscle & Strength (Optimum Nutrition comparison)Specific productsIndependently documented
Thorne Creatine NSF Certified for Sport (90 servings) approximately $44 (~$0.49/serving) at research date, in line with mainstream micronized creatine per-serving
Retailer · Accessed 2026-07-02
Thorne Magnesium Glycinate (90 capsules) approximately $26 at research date, within typical range for comparable products
Retailer · Accessed 2026-07-02
Thorne filed a 2021 federal suit against an unauthorized Amazon reseller alleging sale of expired/tampered products bearing its name
Press · Accessed 2026-07-02
FDA issued Thorne Research a warning letter in 2004 concerning disease-treatment claims in website marketing copy
Other · Accessed 2026-07-02 · Historical (22 years at research date).
FDA publicly warned about and Thorne voluntarily recalled Captomer/Captomer-250 (DMSA chelation products) in 2014
Regulator · Accessed 2026-07-02 · Historical (12 years at research date); two SKUs.
Thorne began as a practitioner-channel brand and operates a practitioner-dispensing channel
Company · Accessed 2026-07-02
Frequently Asked Questions
Is Thorne third-party tested?
Is Thorne third-party tested?
Many Thorne products are third-party tested at the product level. NSF's public databases list 190 Thorne products certified to NSF/ANSI 173 and 20+ formulas as NSF Certified for Sport — certification applies to the listed products, not the entire catalog. Thorne also reports four rounds of in-house testing for identity, purity, and potency, which is the company's own statement. If testing status matters to your purchase, check your specific product's listing on NSF's site.
Why do doctors recommend Thorne?
Why do doctors recommend Thorne?
Thorne began as a practitioner-channel brand and remains widely dispensed through healthcare practitioners. The company reports research collaborations with academic institutions — company-reported context, not medical endorsement. The most independently checkable reasons practitioners cite are its per-product NSF certifications and exact-amount labels.
Does Thorne use proprietary blends?
Does Thorne use proprietary blends?
No. Thorne discloses every ingredient and its exact dose on all product labels. They also avoid common allergens, unnecessary binders, and artificial preservatives.
This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer