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Third-Party Tested Supplements

Every supplement listed here has been independently tested by a third-party lab such as USP, NSF, ConsumerLab, or Informed Choice. Third-party testing verifies that what is on the label matches what is in the bottle.

454 products • Page 1 of 19

These supplements have all been independently verified by third-party testing organizations like USP, NSF, or...

These supplements have all been independently verified by third-party testing organizations like USP, NSF, or ConsumerLab, ensuring label accuracy, purity, and potency.

As an Amazon Associate, we earn from qualifying purchases. Some links below are affiliate links — this doesn't affect our editorial independence or product ratings. How we evaluate products

Carlson Cod Liver Oil Liquid Lemon 16.9oz Liquid
IFOS Certified, IGEN Non-GMO
Proprietary blend
1100mg omega-3s per tsp (EPA 460mg + DHA 500mg) + Vitamin A 850 IU + Vitamin D3 400 IU

The recorded teaspoon serving provides 1,100 mg total omega-3s, including 460 mg EPA and 500 mg DHA, from Norwegian cod-liver oil. The liquid also contains vitamins A and D; compare those amounts with other supplements. IFOS and IGEN certification are reported in the seller record.

$72.25 · $4.28 / fluid ounce
Thorne Pyridoxal 5'-Phosphate Capsule

Thorne Pyridoxal 5'-Phosphate

THORNE
(275)
NSF Certified for Sport, NSF GMP
Below clinical
33mg P5P per capsule; ACOG protocol: 1 capsule every 8 hours for NVP

ACOG (Obstet Gynecol 2018 Committee Opinion 189) recommends pyridoxine as first-line for NVP. The Matthews et al. 2010 Cochrane review (PMID 20824863) concluded vitamin B6 reduces NVP severity versus placebo. Thorne's P5P is the pre-activated form (pyridoxal-5'-phosphate) — bypasses hepatic conversion and reaches therapeutic levels faster. NSF Certified for Sport is the highest third-party testing tier available for supplements. One capsule every 8 hours totals 99mg P5P per day, approximately equivalent to 75mg pyridoxine — top of ACOG's 30-75mg/day range.

$56.00 · $0.31 / count
Sports Research Vitamin D3 + K2 (5000 IU) Softgel with coconut oil
(51,867)
Third-party testing reported; USP verification not established
Staff Pick
5000 IU (125 mcg) vitamin D3 + 100 mcg K2 MK-7 per softgel

This Sports Research variant provides 5000 IU vitamin D3 plus 100 mcg vitamin K2 MK-7 per softgel. The current package contains 60 servings. Vitamin D dose, capsule or gummy format and package count distinguish the otherwise similar variants.

$23.95 · $0.40 / count
Nordic Naturals Ultimate Omega, Lemon Flavor - 90 Soft Gels - 1280 mg Omega-3 - High-Potency Omega-3 Softgel

Ultimate Omega, Lemon Flavor - 90 Soft Gels - 1280 mg Omega-3 - High-Potency Omega-3

Nordic Naturals
(58,064)
Non-GMO
Therapeutic dose
1280 mg

Nordic Naturals Ultimate Omega is the category benchmark — 58,000+ Amazon reviews averaging 4.7 stars, molecularly distilled, IFOS-certified, and standardized to 650mg EPA + 450mg DHA per serving. Widely recommended by functional-medicine practitioners.

Thorne Zinc Picolinate 30mg Capsule
NSF Contents Certified
Staff Pick
30mg elemental zinc

Thorne Zinc Picolinate supplies 30 mg elemental zinc per capsule in a 60 capsule bottle. The current listing reports NSF Contents Certified, not NSF Certified for Sport.

$20.00 · $0.33 / count
Sports Research Antarctic Krill Oil 1000mg Softgel
(11,872)
Not verified
1000mg krill oil (EPA 136mg + DHA 60mg, astaxanthin ~500mcg)

This is Sports Research Superba 2 Antarctic krill oil, recorded as 1000 mg oil with 136 mg EPA and 60 mg DHA per serving. Total krill-oil mass should not be compared directly with the EPA + DHA amount in fish-oil products.

$30.95 · $0.52 / count
Jarrow Formulas Methyl B-12 1000mcg Chewable Tablet

Methyl B-12 1000mcg

Jarrow Formulas
(5,220)
Third-Party Tested
Staff Pick
1,000 mcg vitamin B12 as methylcobalamin per chewable tablet

The recorded product contains 1,000 mcg vitamin B12 as methylcobalamin in each lemon-flavored chewable tablet, with 100 servings per bottle. Chewable format is a preference; NIH ODS reports no established efficacy advantage for sublingual over oral B12.

$11.92 · $0.12 / count
Thorne Quercetin Phytosome Capsule
NSF Contents Certified
250mg quercetin phytosome per capsule

Thorne Quercetin Phytosome lists 250 mg phytosome ingredient per capsule, with 60 capsules. The phospholipid complex differs from plain quercetin; phytosome mass is not automatically an equal mass of pure quercetin.

$46.00 · $0.77 / count
MacuHealth Plus+ Softgel
(954)
Third-Party Tested
Staff Pick
10 mg lutein + 10 mg meso-zeaxanthin + 2 mg zeaxanthin per serving (4 softgels), with vitamins C/E, zinc and copper

MacuHealth Plus+ combines three carotenoids with vitamins C and E, zinc and copper. The manufacturer lists 10 mg lutein, 10 mg meso-zeaxanthin and 2 mg zeaxanthin in the four-softgel daily serving. The 360-softgel variant provides 90 servings.

$94.95 · $0.26 / count
Optimum Nutrition Micronized Creatine Monohydrate Powder Micronized powder
Informed Choice participation reported
Staff Pick
Therapeutic dose
5g per serving

The recorded product provides 5 g micronized creatine monohydrate per serving and 120 servings per container. The seller reports participation in Informed Choice. The supplied current evidence does not establish Creapure sourcing or a 99.99% purity result.

$25.87 · $25.87 / count
Vital Proteins Collagen Peptides Advanced Unflavored 9.33 oz Powder
Current product-specific certification scope not verified
20 g collagen per listed serving; verify current scoop measure

Vital Proteins Collagen Peptides Advanced is the unflavored 9.33 oz variant with 12 listed servings. The current formulation includes bovine collagen, vitamin C and hyaluronic acid; it should not be confused with a plain collagen-only variant.

$22.38 · $2.40 / ounce
Bulletproof Brain Octane C8 MCT Oil Liquid
(30,890)
Independent product testing not verified
Proprietary blend
14g pure C8 per tablespoon

The recorded 16 oz liquid contains C8 MCT oil derived from coconut. Its C8-only composition distinguishes it from mixed MCT oils. The seller advises starting with a smaller amount to assess digestive tolerance; ketone production does not by itself prove cognitive or weight-loss benefits.

$29.99 · $1.87 / fluid ounce
Real Mushrooms Lion's Mane Capsule

Lion's Mane

Real Mushrooms
(23,029)
Third-Party Tested (beta-glucan verified)
Staff Pick
1,000 mg lion’s mane extract per serving (2 capsules; 500 mg per capsule)

The manufacturer identifies an organic lion’s-mane fruiting-body extract made using hot water and reports more than 30% beta-glucans verified by third-party testing. The 120-capsule variant supplies 60 two-capsule servings of 1,000 mg. Beta-glucan content characterizes the extract; it does not prove a cognitive outcome.

$34.95 · $0.29 / count
Barlean's Organic Flaxseed Oil Liquid 16oz Liquid
USDA Organic, Non-GMO Project Verified
Staff Pick
Clinical dose
1 tbsp (15mL): 7,640mg ALA omega-3

The recorded tablespoon serving supplies 7,640 mg ALA from cold-pressed flaxseed oil. The liquid can be added to food and allows portion measurement without softgels. ALA is a different omega-3 from the EPA and DHA listed on fish-oil products, so compare like nutrients and serving sizes.

$27.99 · $1.75 / fluid ounce
Jarrow Formulas QH-Absorb Ubiquinol 100mg Softgel
(4,098)
Third-Party Tested
Staff Pick
100mg ubiquinol per softgel

This 120-softgel variant lists 100 mg ubiquinol per softgel in the QH-Absorb formulation. The softgel amount and formulation identify the product; higher blood CoQ10 levels do not by themselves establish a clinical benefit. The recorded directions allow different daily frequencies, so serving count differs from day supply.

$66.94 · $0.56 / count
Jarrow Formulas Ashwagandha 300mg Veggie Capsule

Ashwagandha 300mg

Jarrow Formulas
(1,933)
Third-Party Tested
Staff Pick
300 mg KSM-66 ashwagandha root extract per capsule; seller directions specify one capsule twice daily

The recorded formula uses KSM-66 ashwagandha root extract at 300 mg per capsule. The 120-capsule bottle contains 120 one-capsule servings, or 60 days at the recorded twice-daily directions. A branded extract and studied dose do not guarantee a cortisol or stress benefit for an individual.

$22.93 · $0.19 / count
Jarrow Formulas Theanine 200mg Vegetarian Capsule

Theanine 200mg

Jarrow Formulas
(2,445)
Third-Party Tested
Staff Pick
200 mg L-theanine per capsule reported; confirm current label because seller title also mentions 100 mg

The recorded 60-capsule product is described as a 200 mg L-theanine formula in the seller features. The seller title also includes a conflicting 100 mg phrase, so confirm the current label before purchase. The available evidence does not establish a Suntheanine-branded ingredient.

$22.99 · $0.38 / count
NutriGold Triple Strength Omega-3 Gold Softgel (Burpless)
IFOS 5-Star, ConsumerLab Approved, MSC Certified
2,100 mg total omega-3s per 2-softgel serving: 1,450 mg EPA + 550 mg DHA + 100 mg other omega-3s

The recorded 180-softgel variant contains 90 two-softgel servings. Each serving lists 2,100 mg total omega-3s, including 1,450 mg EPA and 550 mg DHA. Total omega-3s and combined EPA+DHA are different figures. Prescription purified-EPA trial results should not be attributed to this mixed fish-oil supplement.

The Maca Team Gelatinized Black Maca Capsules Capsule

Gelatinized Black Maca Capsules

The Maca Team
(36)
Third-Party Tested, USDA Organic
Staff Pick
Therapeutic dose
3000mg equivalent gelatinized black maca per serving (4 capsules)

The only single-color black maca in our lineup — sourced directly from Junín, Peru at 14,000 feet elevation. Gelatinized for easy digestion and concentrated potency. USDA Organic certified. The Maca Team specializes exclusively in maca, ensuring deep supply chain expertise. Black maca is the rarest (only 15% of harvest) with the strongest research for energy and libido support.

Peak Performance Super Berberine + Wild Bitter Melon Capsule

Super Berberine + Wild Bitter Melon

Peak Performance
(215)
Third-Party Tested
Proprietary blend
Berberine HCl + bitter melon per serving

Combines berberine HCl with wild bitter melon extract for dual-action metabolic support. Bitter melon has its own clinical evidence for glucose metabolism, creating a synergistic formula that targets multiple pathways.

$29.95 · $0.50 / count
Thorne Basic Nutrients 2/Day Capsule

Thorne Basic Nutrients 2/Day

THORNE
(7,036)
NSF Certified for Sport
Proprietary blend
2 capsules per day — active B vitamins, chelated minerals, bioavailable vitamin E

NSF Certified for Sport — the gold standard in third-party testing, trusted by professional athletes and physicians. Uses active vitamin forms including 5-MTHF (methylfolate), methylcobalamin (B12), and chelated minerals for superior absorption. Two-capsule daily dose is convenient and well-tolerated.

$36.00 · $0.60 / count
Doctor's Best Saw Palmetto with Euromed Softgel

Doctor's Best Saw Palmetto with Euromed

Doctor's BEST
(465)
Third-Party Tested
Staff Pick
Clinical dose
320mg Euromed extract per softgel

Uses Euromed's branded saw palmetto extract — produced in Spain using supercritical CO2 extraction for maximum purity and fatty acid concentration. Euromed is one of the most clinically referenced saw palmetto extract suppliers. Full 320mg clinical dose in an oil-based softgel.

$22.99 · $0.38 / count
ProHealth Longevity NMN Pro 500 Enteric-Coated Capsule

Longevity NMN Pro 500

ProHealth
(362)
Third-Party Tested (CoA Available)
Therapeutic dose
500mg NMN per capsule

ProHealth is one of the most established longevity supplement brands, and their NMN Pro uses zymeNMN (enzymatically produced NMN) with publicly available third-party Certificates of Analysis. The enteric coating protects NMN from stomach acid degradation, potentially improving absorption. At 500mg per capsule, it matches the dose used in key clinical trials.

$42.95 · $1.43 / count
Sports Research Triple Strength Omega-3 Softgel
(58,683)
IFOS 5-Star
Staff Pick
1040 mg total omega-3s (EPA 690 mg + DHA 260 mg) from 1250 mg fish oil per softgel

This Sports Research Triple Strength Omega-3 variant supplies 1250 mg fish oil with 1040 mg total omega-3s, including 690 mg EPA and 260 mg DHA per softgel. The 90-count package therefore contains 950 mg combined EPA + DHA per softgel, not 1040 mg combined EPA + DHA.

$32.09 · $0.36 / count

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