Scan Dose Recommended Products

Every product recommended here has passed independent laboratory testing and comes from a trusted brand. 42 products across 18 categories.

Lab tested18 categories42 top picks

B Vitamins

Biotin >1,000 mcg interferes with blood tests — FDA warning after patient DEATH

#1
Nature MadeB-Complex with C
92

~$0.07

#2
JarrowB-Right
92

~$0.15

Avoid
Spring Valley (Walmart)2.5x labeled dose AND doesn't dissolve properly
Garden of LifeFailed testing (from earlier data)

CBD Supplements

1 in 7 people taking "full spectrum" CBD failed a drug test (0.39mg THC)

#1
Lazarus NaturalsHigh Potency Tincture
92

~$0.12

#2
Charlotte's WebCBD Oil
92

~$0.50

Collagen

Most collagen supplements are the same ingredient at 10x different prices

#1
Great LakesCollagen Peptides
92

~$0.50

#2
Vital ProteinsCollagen Peptides
92

~$0.90

CoQ10/Ubiquinol

6 out of tested CoQ10 supplements on Amazon had <8% of claimed content

#1
Kirkland (Costco)CoQ10 300mg
92

~$0.12

#2
QunolUltra CoQ10 100mg
92

~$0.20

Avoid
6 Amazon best-sellersLess than 8% of label claim. Essentially empty capsules.
Qunol (certain lots)Recently RECALLED (Jan 2026) — separate from review testing

Creatine & BCAA

#1
BulkSupplements.comCreatine Monohydrate (Micronized)
92

Top Pick for creatine. Best value. Pure, no additives. ($0.26/serving)

#2
Old SchoolVintage Build
92

Top Pick for combo (creatine + BCAA). 3g creatine + 5g BCAA per scoop. ($2.33 (for 5g creatine equivalent)/serving)

Elderberry

More likely to contain fake ingredients than any other category

#1
Nature's WaySambucus Elderberry
92

~$0.30

Fish Oil / Omega

#1
Kirkland (Costco)Fish Oil 1,000mg
92

Top Pick for low concentration. USP Verified. Best value on market. ($0.04/softgel ($0.08/500mg EPA+DHA)/serving)

#2
CarlsonMaximum Omega 2,000
92

Top Pick for very/extremely high concentration. Triglyceride form (best absorbed). IFOS certified. ($1.17/2 softgels ...

#3
InnovixLabsTriple Strength Omega-3
92

Best value for high-concentration enteric-coated. 200 count. IFOS certified. ($0.15/softgel ($0.09/500mg)/serving)

#4
Nature MadeFish Oil Minis
92

Very high concentration. Small pills. USP Verified. ($0.29/2 softgels ($0.15/500mg)/serving)

Avoid
JamiesonRANCID — Peroxide 48 meq/kg (limit is 5). TOTOX 109.9 (limit ~26).

Greens Powders

Most greens powders are not worth the money — eating actual vegetables is cheaper and more effective

#1
Amazing GrassGreen Superfood
92

~$0.70

Avoid
AG1 (Athletic Greens)2.1 mcg lead/scoop. 118 FDA adverse event reports. Most of any greens powder.
BrickHouseFunded a study that showed it INCREASED biological aging by 1.43 years
Dr. MercolaHighest lead content of any greens powder tested

Iron Supplements

Ferrous bisglycinate (chelated) is absorbed 2-4x better with fewer side effects than ferrous sulfate

#1
Nature MadeIron 65mg
92

~$0.05

#2
SolgarGentle Iron 25mg
92

~$0.12

Joint Supplements

Glucosamine only helps MODERATE-TO-SEVERE KNEE pain (not mild, not hip, not back)

#1
Kirkland (Costco)Glucosamine + Chondroitin
92

$0.20

#2
SwansonBoswellia AKBA
92

$0.40

Avoid
Arazo Nutrition<4% boswellia AND 2.3% turmeric — TWO empty ingredients
Joint Juice$90M class action settlement (2026) for fraud

Magnesium

BulkSupplements magnesium glycinate is NOT actually glycinate — contains hidden oxide

#1
Nature MadeMagnesium Oxide 250mg
92

Oxide. USP Verified. Cheapest. Despite lower absorption, high elemental magnesium.

#2
Doctor's BestHigh Absorption Magnesium
92

Glycinate. Better absorbed. Fewer GI issues.

Avoid
BulkSupplementsHidden magnesium oxide — labeled as glycinate but contains oxide. Deceptive.

Melatonin

Swanson at $0.03/capsule is the cheapest melatonin that passed testing

#1
Low dose (overall)Swanson
92

Low Dose Melatonin. $0.03

#2
Low dose (liquid)NOW
92

Liquid Melatonin. $0.09

#3
Very low doseVicks ZzzQuil
92

Pure Zzzs Back To Sleep (DISCONTINUED)

Multivitamins

Kirkland Organic Multi is DANGEROUS — 423.8% zinc suppresses immune function and depletes copper

#1
DEVAVegan Multivitamin
92

Passed independent lab testing. Recommended by Scan Dose Research Team. ($0.15/tablet/serving)

#2
Pure EncapsulationsO.N.E. Multivitamin
92

Passed independent lab testing. Recommended by Scan Dose Research Team. ($0.75/capsule/serving)

#3
ShakleeGold Multi+
92

Passed independent lab testing. Recommended by Scan Dose Research Team. ($0.57/2 tablets/serving)

Avoid
Kirkland (Costco)423.8% zinc + 387.6% folate. Dangerous zinc overdose.
Adapt Naturals (Chris Kresser)Only 11.8% vitamin A + 161.4% folate.
Dr. Brad Stanfield193.6% vitamin D + 202.3% folate. Double-dose.

Probiotics

Garden of Life found 8x labeled amount (406B vs 50B) — massive overshoot but all passed

#1
BioGaiaGastrus
92

$0.80/tablet

#2
Antibiotic-associated diarrhea / Traveler's diarrheaCulturelle
92

Probiotics. $0.58/capsule

#3
C. difficile preventionFlorastor
92

Saccharomyces boulardii. $1.98/2 caps

Protein Powders

84% of protein powders contain detectable arsenic, lead, or cadmium (Clean Label Project)

#1
Whey (budget)Optimum Nutrition
92

Gold Standard Whey. Industry benchmark. Passed testing. Low heavy metals.

#2
Whey (clean)Naked
92

Naked Whey. Minimal ingredients. Grass-fed. Low heavy metals.

#3
Plant (budget)Orgain
92

Organic Protein. Passed testing. Widely available.

Avoid
Ancient Nutrition6 mcg lead/scoop
Multiple chocolate flavors110x cadmium vs vanilla
Organic brands (general)3x more lead than conventional

Turmeric/Curcumin

24% of turmeric supplements fail lab testing

#1
NutrigoldTurmeric Curcumin Gold
92

~$0.30

#2
Doctor's BestHigh Absorption Curcumin
92

~$0.25

Avoid
BioSchwartz69.4% of label claim. #1 on Amazon with 100K reviews.
Nature's Way55.7% of active ingredient. Less than half potency.

Vitamin D

#1
Moderate dose pillNature Made
92

D3 1,000 IU. ($0.04/serving)

#2
High dose pillKirkland (Costco)
92

D3 2,000 IU. ($0.01/serving)

#3
Very high dose pillVitacost
92

D3 5,000 IU. ($0.01/serving)

#4
GummyNordic Naturals
92

D3 Gummies 1,000 IU. ($0.15/serving)

#5
Vegan moderateWhole Earth & Sea
92

Vegan D3 1,000 IU. ($0.20/serving)

Avoid
Biotics Research195% of labeled amount — nearly 8,000 IU instead of 4,000 IU. Dangerous overdose.

Zinc

Zinc >40mg/day chronically DEPLETES COPPER → suppresses immune function

#1
Nature MadeZinc 30mg
92

~$0.04

Reviewed by the Scan Dose Research Team and Clinical Advisory Board

These statements have not been evaluated by the FDA. Scan Dose does not sell supplements. Recommendations are based on independent laboratory testing data.