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Trust scores are based on third-party testing frequency, certifications (NSF, USP, IFOS, Informed Sport), manufacturing transparency, and regulatory history. We receive no payment from brands for inclusion. Affiliate links are clearly marked.
Independent testing found lead contamination
Passed quality testing but magnesium exceeds upper limit at suggested dose.
Clinically studied Bifidobacterium 35624 strain. Procter & Gamble brand.
Selenium Solution passed. Hypoallergenic liquid form.
Greens powders with organic certifications.
Unknown
Independent testing found below-detectable protease activity
Topical magnesium. Genuine Zechstein source.
Independent testing found contamination
Independent testing found near-empty pills
Independent testing found near-empty capsules
See AG1 entry. Rebranded to AG1.
FTC investigated
PreserVision passed quality testing but NOT recommended due to excessive zinc.
Pharmaceutical company. Owns One A Day brand.
Independent testing found near-empty pills
Third-party tested. Known for Magnesium Breakthrough.
Amazon #1 turmeric failed lab accuracy test.
Limited
Multiple products passed. Vitamin K1 Top Pick. Vitamin A also passed.
Company-funded study showed negative results
Multiple products passed. Vitamin K2 Top Pick. Vitamin A also passed.
Glanbia brand. GMP certified.
Third-party tested raw ingredients. No proprietary blends.
Personalized vitamin packs. Third-party tested.
NSF Certified for Sport on some products.
Internal only
Methylcellulose Caplets passed. Top Pick for methylcellulose. No heavy metal concern.
Cold Remedy lozenges passed. Top Pick for zinc lozenges for colds.
Select products tested
Clinically studied Lactobacillus rhamnosus GG strain.
Vegan Glucosamine MSM & Chondroitin passed.
Third-party tested. Transparent labels.
Mixed results. Valerian product functionally empty.
Mixed results. Joint Formula passed but eye support failed with 157% lutein overdose.
Amazon-popular brand with limited published testing data.
Medical-grade ORS formula. Third-party tested.
Informed Sport certified protein. Third-party tested.
Independent testing found product essentially empty
Crystals passed testing.
Now part of Nature's Way. Good testing history.
Limited published testing data.
Digest Gold passed but amylase at 155% of claimed, exceeding tolerable limit.
Independent testing found dangerous lead contamination
Passed. Top Pick for very high dose vitamin C. Non-acidic calcium ascorbate form.
Clinically studied ingredients. Terry Lemerond brand.
Elderberry gummies passed. Very low anthocyanosides (0.02 mg).
None published
Saccharomyces boulardii CNCM I-745. Clinically studied probiotic yeast.
Mushroom-based supplements. Some third-party testing.
Organics Valerian Root passed but low dose and very expensive.
Most products tested
Transparent formulas. Third-party tested.
Transparent labels. Third-party tested.
Triflex passed. NSF certified products.
Limited
Lutein & Zeaxanthin Gummies passed.
Premium Elderberry Gummies passed. Near-zero anthocyanosides.
Multiple products passed. Digestive Enzymes Top Pick. Vitamin E and K2 also passed.
Independent testing found near-empty capsules
Valerian Root passed. 1.8 mg valerenic acids per capsule. Cheapest per capsule.
Total Control passed. Top Pick in stimulant blend category. Safe caffeine level (82 mg/tablet).
Independent testing found banned substances
Paul Stamets mushroom supplements. Organic certified.
Transparent labeling. Mixed contamination results.
Internal testing
Both vitamin K2 products passed. Higher-dose MK-4 + MK-7 formulas.
Advanced joint formula passed. Contains ApresFlex Boswellia, UC-II collagen, and turmeric.
Practitioner-grade brand with consistent quality across product lines.
Liquid soft-gel format. GMP certified.
Third-party tested. Transparent dosing.
Vitamin E Moisturizing Creme passed. Top Pick for topical vitamin E.
Informed Sport certified. Third-party tested.
Every batch tested
Conditional pass. Lead exceeds limits at 3+ servings/day.
Independent testing found zero active ingredients
Clean ingredient profile. Third-party tested.
Natural ingredients, transparent labels. Third-party tested.
Most products tested. ArthroMax Top Pick. Ashwagandha failed TWICE.
Condition-specific formulas. Third-party tested.
Hydration multiplier. Unilever brand.
Transparent electrolyte formula. Third-party tested.
Triple Carotenoid Formula passed. Includes unique meso-zeaxanthin. NSF Certified for Sport.
See MaryRuth's entry. Same brand.
Limited
Most products tested
Store brand with decent pass rate.
Independent testing found near-empty capsules
E Complex passed. High tocopherol content.
Conditional pass. Lead exceeds limits at 2+ servings/day.
Organic Acerola Powder passed. Top Pick for natural powder vitamin C.
NSF Certified for Sport across product lines. Huberman Lab partnership.
Adaptogen blends with limited clinical evidence.
Iovate brand. GMP certified.
Independent testing found near-empty capsules
Established brand. Known for melatonin products.
Mixed results across categories. Joint product failed, selenium passed.
USP Verified across multiple categories. 95%+ pass rate.
Mixed results. Valerian failed (low potency + lead). Elderberry passed.
Multiple products passed across vitamin E and lutein categories.
Amazon brand with limited testing data.
Independent testing found product failed content claims
Valerian (timed release) passed. 4.2 mg valerenic acids per tablet.
Budget brand with GMP certification.
Select products tested
Plant-based whole food supplements. Third-party tested.
Mixed results. Boswellin failed but vitamin C chewable passed and earned Top Pick.
Third-party tested. Transparent labeling.
Most products tested
Failed independent testing
Nordic Naturals practitioner line. Same quality as consumer line.
Professional-strength omega-3s. IFOS 5-Star certified.
Tall 10+ passed. Includes calcium + D3 + proprietary blend.
Independent testing found near-empty capsules
Full label transparency. Third-party tested every batch.
Every batch tested
Select products tested
Vinali capsules passed. NSF Contents Certified.
Every batch tested
Multi Carotene passed. Natural beta-carotene from algae. NSF Certified.
GMP certified. Third-party tested.
Informed Sport certified electrolytes.
Limited
Functional mushroom brand. USDA Organic.
Internal only
Select products
Informed Sport certified. One of the most tested protein brands.
Organic protein and nutrition. USDA Organic certified.
Psyllium Whole Husk passed. Top Pick overall. Lowest lead of any psyllium tested.
Practitioner-only brand with rigorous testing protocols.
Wide availability. Initially disputed then clarified.
Independent testing found zero active ingredients
Coleus Forskolii passed. Top Pick in forskolin category. Clinically tested 25 mg dose at $0.33/capsule.
Personalized vitamin packs. Nestla Health Science brand.
Known for probiotics. Third-party tested.
Independent testing found dangerous overdose levels
Joint Health Plus passed testing.
Mixed results. Vitamin C passed but vitamin E failed (88.1% of claimed active E).
NSF Certified for Sport on some products.
NOW Foods practitioner line. Same quality standards.
Mixed results. 'Doctor recommended' brand with premium prices and below-label products.
Multiple products passed across vitamin C, E, A, selenium categories.
Food-based multivitamins. Acquired by Clorox.
Uses fruiting body extracts. Beta-glucan tested.
Probiotics and digestive health. Third-party tested.
Internal testing
Independent testing found near-empty pills
Lutein 25 mg passed. Cheapest lutein at $0.03/10mg.
Both syrup and tablets passed. Top Pick as most similar to clinically tested formula.
DS-01 synbiotic. Published clinical trials.
Every batch tested
Select products tested
Select products tested
Multiple products passed across categories. Vegan vitamin E passed.
NaturesPlus whole-food multivitamin line.
Select products tested
Cheapest brand but inconsistent quality control.
Whole-food based supplements. Vertically integrated farm-to-tablet.
None published
Plant-based protein. Third-party tested.
Independent testing found zero active ingredients
Select products tested. Boswellia Top Pick. KSM-66 ashwagandha failed.
Camu Camu Powder passed.
Clinically studied ingredients. Third-party tested.
Multiple products passed across selenium and cod liver oil categories.
Elite-Zyme Pro passed. Top Pick for protein digestion. Highest protease at 159,726 HUT.
Mineral supplements from Great Salt Lake. Third-party tested.
Digest passed. Top Pick for fat digestion. Highest lipase at 8,174 FIP.
Full label transparency. Third-party tested.
Passed. Top Pick for natural vitamin E with mixed tocopherols. 268 mg active + 513 mg mixed tocopherols.
Vitamin D + K2 passed. MK-4 + MK-7 combo.
Independent testing found below-label ingredients
High-potency medical probiotic. Clinically studied formulation.
Multiple products passed. Chelated Zinc Glycinate Top Pick. Elderberry also passed.
Independent lab testing on every lot. Practitioner-grade.
Select products tested
AREDS2 Classic passed. Top Pick for AREDS2 formula. Safe zinc dose (25 mg).
Organic Psyllium Husk Powder passed. Cheapest powder option.
Independent testing found near-empty capsules
Chewable Vitamin C passed. Good value at $0.06/500mg.
None
Systemic enzyme formula. Clinically studied.
Practitioner-exclusive brand. Third-party tested.
Both psyllium products passed. Low lead levels.
Kosher certified supplements. Third-party tested.
GMP certified facility. Third-party tested.
Unable to approve. Homeopathic labeling circumvents supplement transparency.
Independent testing found zero active ingredients
Independent testing found product failed content claims
Budget brand with USP verification on some products.
Multiple products passed across selenium and elderberry categories.
Trust scores reflect publicly available data as of April 2026. Brands may update testing practices. Affiliate links are marked. Avelor is not affiliated with any supplement brand. This is not medical advice.