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Science-Verified Brand

Thorne

Thorne is a premium supplement brand trusted by Mayo Clinic, Cleveland Clinic, and 11 U.S. Olympic teams. NSF Certified for Sport across their athletic line, with every product third-party tested.

Founded 1984New York, NY155 products
·
Third-Party TestedNo Proprietary BlendsClinical DosingPublished COAs4/4 Verified

Thorne meets our Science-Verified criteria with NSF Certified for Sport products, full ingredient disclosure, clinical...

Thorne meets our Science-Verified criteria with NSF Certified for Sport products, full ingredient disclosure, clinical dosing backed by Mayo Clinic research partnership, and published COAs.

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THORNE Creatine - Micronized Creatine Monohydrate Powder - Support for Muscles & Cognitive Function* PowderPerformancePowder

THORNE Creatine - Micronized Creatine Monohydrate Powder - Support for Muscles & Cognitive Function*

NSF Certified for Sport

5 g per powder · Creatine

Creatine — Micronized Creatine Monohydrate Powder - Support for Muscles & Cognitive Function* - for Women & Men - Unflavored - NSF Certified for Sport

4.7 (15,714)
$44.00$0.49/serving
THORNE Creatine - Micronized Creatine Monohydrate Powder - Support for Muscles & Cognitive Function* PowderPerformancePowder

THORNE Creatine - Micronized Creatine Monohydrate Powder - Support for Muscles & Cognitive Function*

NSF Certified for Sport

5 g per powder · Creatine

Creatine — Micronized Creatine Monohydrate Powder - Support for Muscles & Cognitive Function* - for Women & Men - Unflavored - NSF Certified for Sport

4.7 (15,714)
$36.00$1.20/serving
MineralsCapsule

THORNE - Zinc Picolinate 30 mg - Highly Absorbable Zinc Supplement - Supports Immune System, Eye, Sk

NSF Certified for Sport, NSF GMP

30 mg per capsule · - Zinc Picolinate

Zinc Picolinate 30 mg — Highly Absorbable Zinc Supplement - Supports Immune System, Eye, Skin & Reproductive Health* - Third-Party Certified - Gluten,

4.8 (10,694)
$20.00$0.33/serving
THORNE - Zinc Picolinate 30 mg - Highly Absorbable Zinc Supplement - Supports Immune System, Eye, Sk CapsuleMineralsCapsule

THORNE - Zinc Picolinate 30 mg - Highly Absorbable Zinc Supplement - Supports Immune System, Eye, Sk

NSF Certified for Sport, NSF GMP

30 mg per capsule · - Zinc Picolinate

Zinc Picolinate 30 mg — Highly Absorbable Zinc Supplement - Supports Immune System, Eye, Skin & Reproductive Health* - Third-Party Certified - Gluten,

4.8 (10,642)
$41.00$0.23/serving
THORNE - Vitamin D-5,000 - Vitamin D3 Supplement - Supports Healthy Bones, Teeth & Muscles, Plus Car CapsuleVitaminsCapsule

THORNE - Vitamin D-5,000 - Vitamin D3 Supplement - Supports Healthy Bones, Teeth & Muscles, Plus Car

NSF Certified for Sport

- Vitamin D-5,000

Vitamin D-5,000 — Vitamin D3 Supplement - Supports Healthy Bones, Teeth & Muscles, Plus Cardiovascular & Immune Function* - NSF Certified for Sport -

4.8 (9,107)
$20.00$0.33/serving
THORNE - Iron Bisglycinate - 25 mg Iron Supplement for Enhanced Absorption Without GastrointestinalMinerals

THORNE - Iron Bisglycinate - 25 mg Iron Supplement for Enhanced Absorption Without Gastrointestinal

NSF Certified for Sport

25 mg · - Iron Bisglycinate

Iron Bisglycinate — 25 mg Iron Supplement for Enhanced Absorption Without Gastrointestinal Side Effects* - NSF Certified for Sport - Gluten-Free - 60

4.7 (7,863)
$16.00$0.27/serving
THORNE - Basic Nutrients 2/Day - Comprehensive Daily Multi-Vitamin with Optimal Bioavailability - Vi CapsuleMultivitaminCapsule

THORNE - Basic Nutrients 2/Day - Comprehensive Daily Multi-Vitamin with Optimal Bioavailability - Vi

NSF Certified for Sport, NSF GMP

- Basic Nutrients 2/Day

Basic Nutrients 2/Day — Comprehensive Daily Multi-Vitamin with Optimal Bioavailability - Vitamin & Mineral Formula - Third-Party Certified - Gluten, D

4.2 (7,036)
$36.00$0.60/serving
THORNE - Basic Nutrients 2/Day - Comprehensive Daily Multi-Vitamin with Optimal Bioavailability - Vi CapsuleMultivitaminCapsule

THORNE - Basic Nutrients 2/Day - Comprehensive Daily Multi-Vitamin with Optimal Bioavailability - Vi

NSF Certified for Sport, NSF GMP

- Basic Nutrients 2/Day

Basic Nutrients 2/Day — Comprehensive Daily Multi-Vitamin with Optimal Bioavailability - Vitamin & Mineral Formula - Third-Party Certified - Gluten, D

4.2 (6,983)
$68.00$0.57/serving
VitaminsLiquid

THORNE - Vitamin D + K2 Liquid with a Metered Dispenser - Vitamins D3 & K2 to Support Healthy Bones

NSF Certified for Sport, NSF GMP

- 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

4.4 (6,380)
$34.00$0.06/serving
THORNE - Basic Prenatal - Well-Researched Folate Multi for Pregnant & Nursing Women - Includes 18 ViVitamins

THORNE - Basic Prenatal - Well-Researched Folate Multi for Pregnant & Nursing Women - Includes 18 Vi

NSF Certified for Sport, NSF GMP

- Basic Prenatal

Basic Prenatal — Well-Researched Folate Multi for Pregnant & Nursing Women - Includes 18 Vitamins & Minerals, Plus Choline - Third-Party Certified - G

4.3 (6,358)
$37.00$1.23/serving
THORNE - Berberine - Dual Action Formula with Phytosome Plus Botanical Extract - Support Heart HealtHeart Health

THORNE - Berberine - Dual Action Formula with Phytosome Plus Botanical Extract - Support Heart Healt

NSF Certified for Sport, NSF GMP

- Berberine

Berberine — Dual Action Formula with Phytosome Plus Botanical Extract - Support Heart Health, Immune System, Healthy GI & Cholesterol* - Gluten-Free -

4.4 (6,090)
$44.00$0.73/serving
THORNE - Zinc Picolinate 15 mg - Highly Absorbable Zinc Supplement - Supports Immune System, Eye, Sk CapsuleMineralsCapsule

THORNE - Zinc Picolinate 15 mg - Highly Absorbable Zinc Supplement - Supports Immune System, Eye, Sk

NSF Certified for Sport, NSF GMP

15 mg per capsule · - Zinc Picolinate

Zinc Picolinate 15 mg — Highly Absorbable Zinc Supplement - Supports Immune System, Eye, Skin & Reproductive Health* - Third-Party Certified - Gluten,

4.7 (5,518)
$15.00$0.25/serving
THORNE - Magnesium CitraMate - Magnesium Citrate & Malate Supplement - Supports Heart Health, SkeletMinerals

THORNE - Magnesium CitraMate - Magnesium Citrate & Malate Supplement - Supports Heart Health, Skelet

NSF Certified for Sport, NSF GMP

- Magnesium CitraMate

Magnesium CitraMate — Magnesium Citrate & Malate Supplement - Supports Heart Health, Skeletal Muscles, Cardiac & Lung Function, Bone Density & More* -

4.7 (5,423)
$22.00$0.24/serving
THORNE - Adrenal Cortex - Supplement for Cortisol Management - Supports Healthy Adrenal Gland Functi CapsuleImmuneCapsule

THORNE - Adrenal Cortex - Supplement for Cortisol Management - Supports Healthy Adrenal Gland Functi

NSF Certified for Sport, NSF GMP

- Adrenal Cortex

Adrenal Cortex — Supplement for Cortisol Management - Supports Healthy Adrenal Gland Function, Stress Management, Immune System, Fatigue & Metabolism*

4.4 (4,461)
$20.00$0.33/serving
THORNE - Basic B-Complex - Tissue-Ready Vitamin B Complex Supplement with Choline - Supports CellulaVitamins

THORNE - Basic B-Complex - Tissue-Ready Vitamin B Complex Supplement with Choline - Supports Cellula

NSF Certified for Sport, NSF GMP

- Basic B-Complex

Basic B-Complex — Tissue-Ready Vitamin B Complex Supplement with Choline - Supports Cellular Energy Production, Brain Health & Red Blood Cell Formatio

4.7 (4,298)
$27.00$0.45/serving
THORNE - Selenium - 200 mcg Selenium Supplement for Antioxidant Support - Supports Thyroid Health, I CapsuleMineralsCapsule

THORNE - Selenium - 200 mcg Selenium Supplement for Antioxidant Support - Supports Thyroid Health, I

NSF Certified for Sport, NSF GMP

200 mcg per capsule · - Selenium

Selenium — 200 mcg Selenium Supplement for Antioxidant Support - Supports Thyroid Health, Immune Function & Healthy Aging - Third-Party Certified - Gl

4.7 (4,249)
$14.00$0.23/serving
THORNE - Stress B-Complex - Vitamins B2, B6, B12 & Folate in Highly-Absorbable and Active Forms - ExVitamins

THORNE - Stress B-Complex - Vitamins B2, B6, B12 & Folate in Highly-Absorbable and Active Forms - Ex

NSF Certified for Sport, NSF GMP

- 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

4.6 (4,022)
$26.00$0.43/serving
THORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron, Folate, B and C V CapsuleVitaminsCapsule

THORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron, Folate, B and C V

NSF Certified for Sport, NSF GMP

- Advanced Iron Complex

Advanced Iron Complex — Complete Blood Support Formula* - Elemental Iron, Folate, B and C Vitamins for Optimal Absorption - Chelated Iron Supplement -

4.6 (3,945)
$26.00$0.43/serving
THORNE - B-Complex #12 - Vitamin B Complex with Choline Supplement - Supports Cellular Energy Produc CapsuleVitaminsCapsule

THORNE - B-Complex #12 - Vitamin B Complex with Choline Supplement - Supports Cellular Energy Produc

NSF Certified for Sport, NSF GMP

- B-Complex #12

B-Complex #12 — Vitamin B Complex with Choline Supplement - Supports Cellular Energy Production & a Healthy Nervous System* - Third-Party Certified -

4.7 (3,921)
$26.00$0.43/serving
THORNE - 5-MTHF - Methylfolate (Active B9 Folate) Supplement - Supports Cardiovascular Health, FetalVitamins

THORNE - 5-MTHF - Methylfolate (Active B9 Folate) Supplement - Supports Cardiovascular Health, Fetal

NSF Certified for Sport, NSF GMP

1mg · - 5-MTHF

5-MTHF — Methylfolate (Active B9 Folate) Supplement - Supports Cardiovascular Health, Fetal Development, Nerve Health, Methylation & Homocysteine Leve

4.7 (3,870)
$24.00$0.40/serving
THORNE - Vitamin D3 Supplement - Supports Healthy Bones, Teeth, Muscles, Cardiovascular & Immune FunVitamins

THORNE - Vitamin D3 Supplement - Supports Healthy Bones, Teeth, Muscles, Cardiovascular & Immune Fun

NSF Certified for Sport, NSF GMP

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

4.8 (3,539)
$17.00$0.19/serving
VitaminsCapsule

THORNE - Vitamin B12 - as Methylcobalamin - Supports Heart & Nerve Health, Blood Cell Function, Rest

NSF Certified for Sport, NSF GMP

- Vitamin B12

Vitamin B12 — as Methylcobalamin - Supports Heart & Nerve Health, Blood Cell Function, Restful Sleep & Methylation* - Third-Party Certified - Gluten,

4.8 (3,381)
$24.00$0.40/serving
THORNE - Vitamin C 500 mg - Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Supports ImmuVitamins

THORNE - Vitamin C 500 mg - Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Supports Immu

NSF Certified for Sport, NSF GMP

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

4.8 (3,350)
$23.00$0.26/serving
THORNE - Curcumin Phytosome 1000 mg (Meriva) - Clinically Studied, High Absorption - Supports HealthAnti-Inflammatory

THORNE - Curcumin Phytosome 1000 mg (Meriva) - Clinically Studied, High Absorption - Supports Health

NSF Certified for Sport, NSF GMP

1000 mg · - Curcumin Phytosome

Curcumin Phytosome 1000 mg (Meriva) — Clinically Studied, High Absorption - Supports Healthy Inflammatory Response in Joints, Muscles, GI Tract, Liver

4.7 (3,333)
$64.00$1.07/serving

Frequently Asked Questions

Is Thorne third-party tested?

Yes. Thorne manufactures all products in their own NSF GMP-registered facilities. Their athletic line carries NSF Certified for Sport designation, and all products undergo rigorous testing for identity, purity, potency, and composition.

Why do doctors recommend Thorne?

Thorne partners with Mayo Clinic and other research institutions to develop evidence-based formulations. Their commitment to third-party testing, allergen-free manufacturing, and clinical dosing makes them a preferred brand among healthcare practitioners.

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.

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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