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Key Minerals

product on market Capsule Onnit Safety: 92/100
92/100

This product looks safe

  • Iodine: 25mg is 22.7× the Tolerable Upper Intake Level (1.1mg)
  • 40% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This blend contains essential minerals like calcium and magnesium, which have strong evidence for supporting bone health and muscle function. Iodine and molybdenum provide targeted metabolic and enzymatic support. However, overall evidence coverage for this specific combination is limited.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Iodine: 25mg is 22.7× the Tolerable Upper Intake Level (1.1mg)

Label

Product Label

Label for Key Minerals
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Capsule(s)
Serving Size
30
Servings
Mineral
Product Type
40%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Calcium
250 mg (20% DV)
25 mg (15% DV)
Exceeds UL by 22.7× (UL: 1.1 mg) 245 studies (A:4, B:133)
125 mg (30% DV)
Within RDA (0.3× RDA) 316 studies (A:8, B:159)
150 mcg (330% DV)
3.3× RDA — above typical dose (UL: 2 mg) 3 studies — no high-quality reviews
2 mg
Market median: 3.0mg (58 products) 3 studies — no high-quality reviews

Other Ingredients

Vegetarian Capsule Rice Bran Rice concentrate Microcrystalline Cellulose mineralized Red Algae Maltodextrin
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: As a dietary supplement, take 1 day packet in the evening prior to sleep, preferably with a light meal or snack.

Warnings & Precautions

Consult a medical doctor before taking this or any other dietary supplement if you are pregnant, nursing, have or suspect a medical condition or are taking any medications.

Keep out of reach of children.

Contains fish (cod, herring), shellfish (krill, lobster, shrimp) [The organic kelp in Key Minerals is a naturally sourced material which may contain fish and shellfish]

Formulation Notes

Complete Supplement Packs

Additional Information

Contains 1 Night Pack Night Support Not labeled for individual sale ONN

Store in a cool, dry place.

Metadata

Product Details

DSLD Entry Date2023-01-23
Product TypeMineral
FormCapsule
BrandOnnit
DSLD ID273173
Data Updated2026-04-11
Research

Research Evidence

849
Research Sources
56
Avg Quality
450
Meta Analysis
152
Rct
137
Systematic Review
73
Clinical Trial
11
Regulatory Source
7
Other
7
Guideline
3
Openfda Safety
2
Cochrane Review
2
Observational
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025 PubMed DOI
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008 PubMed DOI
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023 PubMed DOI
A Dietary sodium, sodium-to-potassium ratio, and risk of stroke: A systematic review and nonlinear dose-response meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2019 PubMed DOI
A The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic review and meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2021 PubMed DOI
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
View all evidence for Electrolytes →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.