Natural Factors
90 products scored by Formulate's ingredient-level rubric. Brand grade reflects a weighted average across the full lineup.
Scored by the Formulate Research Team · Last reviewed July 2026
How Natural Factors scored
Accurate labels, no proprietary blends hiding doses, consistent sourcing
Ingredient form, bioavailability, dose accuracy across the lineup
Published testing, ingredient origins, full disclosure
USP, NSF, Informed Sport, or comparable third-party testing coverage
New formulations, new forms, research-driven development
Component scores are derived from the product lineup, not from marketing materials. See the methodology page for how each component is computed.
What Natural Factors makes
- 12 Minerals
- 10 Antioxidants
- 9 Joint Support
- 7 Immune Support
- 7 Adaptogens
- 6 Sleep Supplements
- 6 Nootropics
- 5 B Vitamins
- 5 Vitamins
- 4 Vitamin D
- 4 Liver Support
- 3 Botanicals
- 3 Multivitamins
- 2 Amino Acids
- 2 Heart Health
- 2 Fish Oil & Omegas
- 1 Vitamin K
- 1 Greens
- 1 Metabolism
Top-scoring products
All Natural Factors products (90)
- No Flush Niacin 500 mgB Vitamins93
- Vitamin K2Vitamin K92
- Acetyl-L-CarnitineAmino Acids92
- Vegan Vitamin D3 50 mcg (2,000 IU)Vitamin D92
- SelenoExcell SeleniumMinerals92
- Niacin 100 mgB Vitamins91
- Melatonin 10 mgSleep Supplements90
- Calcium CitrateMinerals90
- PQQ-10Antioxidants90
- NEM 500 mgJoint Support90
- Melatonin 1 mgSleep Supplements90
- Melatonin 5 mgSleep Supplements90
- Melatonin 3 mgSleep Supplements90
- Liquid KelpGreens90
- Vitamin D3 125 mcg (5,000 IU)Vitamin D89
- Lutein 40 mgAntioxidants89
- Lutein 20 mgAntioxidants89
- Glucosamine SulfateJoint Support89
- Ubiquinol Active CoQ10 200 mgHeart Health88
- Ubiquinol Active CoQ10 100 mgHeart Health88
- Glucosamine & ChondroitinJoint Support87
- B12 Methylcobalamin 1,000 mcgB Vitamins87
- B12 Methylcobalamin 5,000 mcgB Vitamins87
- Vegan Hyabest Hyaluronic AcidJoint Support86
- MSM & Glucosamine SulfateJoint Support86
- Alpha-Lipoic Acid 200 mgAntioxidants85
- Alpha-Lipoic Acid 100 mgAntioxidants85
- Biotin 10,000 mcgVitamins85
- PharmaGABA 250 mgAmino Acids85
- MSM Joint Formula*Joint Support85
- PEA400Joint Support84
- Mixed Vitamin E 134 mg (200 IU)Vitamins84
- Bee Propolis ExtractImmune Support84
- Bee Propolis Throat SprayImmune Support84
- Vitamin D3 for Kids 10 mcg (400 IU) Chewable TabletsVitamin D83
- Mixed Vitamin E 268 mg (400 IU)Vitamins83
- Black Cohosh ExtractBotanicals83
- Super Cod Liver OilFish Oil & Omegas83
- Chromium & VanadiumAntioxidants83
- Astaxanthin PlusAntioxidants82
- AdrenaSenseAdaptogens82
- Biotin 5,000 mcgVitamins82
- Biotin 1,000 mcgVitamins81
- Mind RetreatNootropics81
- PS-IQ MemoryNootropics81
- Vitamin D3 Drops for Kids 10 mcg (400 IU)Vitamin D80
- Panax GinsengAdaptogens80
- Iron ChelateMinerals79
- Adrenal SerenityAdaptogens79
- The Best-SleepSleep Supplements79
- Tranquil Sleep Chewable TabletsSleep Supplements79
- Joint CurcumizerJoint Support79
- Chromium GTF ChelateMinerals79
- Liver Health FormulaLiver Support78
- Potassium CitrateMinerals78
- Alpha-Lipoic Acid 400 mgAntioxidants78
- Higher ThoughtsFish Oil & Omegas77
- Ginkgo Biloba PhytosomeNootropics77
- MultiFactors Women's 50+Multivitamins77
- LycopeneAntioxidants77
- Hi Potency B ComplexB Vitamins76
- Zinc Citrate 15 mgMinerals76
- Zinc Citrate 50 mgMinerals76
- Zinc Chelate 25 mgMinerals76
- ThyroSenseAdaptogens76
- Milk Thistle PhytosomeLiver Support76
- PhosphatidylserineNootropics76
- Thyroid Health FormulaAdaptogens76
- Olive Leaf ExtractBotanicals76
- Ginkgo BilobaNootropics76
- Advanced Eye FactorsMultivitamins75
- R-Lipoic AcidAntioxidants75
- Quercetin LipoMicel MatrixImmune Support75
- OsteoMove Extra Strength Joint Care*Joint Support75
- PGX Daily Ultra Matrix 750 mgMetabolism74
- Turmeric & BromelainAdaptogens73
- Premium Milk ThistleLiver Support73
- QuercetinImmune Support72
- SAMeNootropics72
- AndroSense T-CorrectMinerals72
- Women's Multivitamin & MineralMultivitamins71
- Oil of Oregano 180 mg SoftgelsImmune Support71
- Gastro-AssistMinerals71
- Magnesium Citrate Powder (Berry)Minerals70
- Milk ThistleLiver Support70
- Oil of Oregano LiquidImmune Support66
- Super MushroomAdaptogens64
- Easy IronMinerals61
- Celery Seed ExtractBotanicals60
- Echinamide SoftgelsImmune Support50
Natural Factors: frequently asked questions
How does Formulate grade Natural Factors?
Formulate grades Natural Factors by aggregating the ingredient-level scores of all 90 Natural Factors products it has analyzed — weighing dose accuracy, ingredient form, transparency, and third-party testing. Natural Factors's overall brand grade is D+ (67/100). It is not a paid or sponsored ranking.
Is Natural Factors third-party tested?
Natural Factors scores 63/100 on third-party verification — meaning third-party testing coverage is limited across its lineup. Check individual product pages for which specific products are certified.
What is Natural Factors's best supplement?
No Flush Niacin 500 mg is Natural Factors's highest-scoring product on Formulate at 93/100 (grade A).
What does Natural Factors make?
Formulate has scored 90 Natural Factors products, including 12 Minerals, 10 Antioxidants, 9 Joint Support, 7 Immune Support, and more.
About the grading
Every Natural Factors product above is scored on dose accuracy, ingredient form, certifications, transparency, and third-party testing. The brand grade aggregates those product scores — it isn't a marketing claim or a pay-for-play ranking. See the methodology page for the full rubric.