Datasets:

erinheit451
/

verified-supplement-evidence

A curated, evidence-graded dataset of 64+ supplement products across 14 categories, built for researchers, developers, and consumers who want transparent, structured supplement data grounded in clinical evidence.

Each row represents a single supplement product with standardized fields for elemental dose, cost-per-day, third-party certification status, evidence grade, and PubMed citation IDs linking to the underlying clinical trials and systematic reviews.

Source: Verified Supplement Data — an evidence-based supplement comparison database with 116+ pages, structured JSON-LD schema, and PubMed-cited evidence grades.

Methodology

Product selection: Products were selected based on market availability (Amazon US), brand reputation, third-party certification status, and relevance to clinical dosing targets.
Dosing: All doses are reported as elemental/active ingredient per serving (not compound weight). For magnesium glycinate, this is elemental magnesium; for iron bisglycinate, this is elemental iron; for omega-3, this is combined EPA+DHA.
Cost-per-day: Calculated as (price / servings_per_container) * servings_needed_for_clinical_dose. Prices reflect Amazon US pricing as of March 2026.
Evidence grading: Each category receives an evidence grade based on the highest level of available evidence:
- strong — Supported by systematic reviews, meta-analyses, or large RCTs with consistent findings
- moderate — Supported by individual RCTs or observational studies with plausible mechanisms
- limited — Preliminary evidence, mechanistic rationale, or expert consensus only
Third-party certifications: Reported exactly as stated on the product label (USP Verified, NSF Certified for Sport, IFOS 5-Star, Informed Sport, etc.).
PubMed citations: PMID numbers link to the primary clinical evidence supporting each category's evidence grade and use case.

Column Definitions

Column	Type	Description
`name`	string	Full product name as listed by manufacturer
`brand`	string	Brand/manufacturer name
`category`	string	Supplement category slug (e.g., `magnesium-glycinate`, `omega-3`)
`form`	string	Specific form/type (e.g., `bisglycinate`, `ubiquinol`, `rTG triglyceride`)
`dose_per_serving`	number	Elemental/active dose per serving
`dose_unit`	string	Unit of measurement (mg, mcg, IU, g, etc.)
`serving_size`	string	Physical serving size description
`servings_per_container`	integer	Number of servings in the container
`price_usd`	number	Current retail price in USD (Amazon US)
`cost_per_day_usd`	number	Calculated daily cost at effective clinical dosing
`third_party_certification`	string	Third-party testing/certification (or "None")
`evidence_grade`	string	Evidence strength: `strong`, `moderate`, or `limited`
`primary_use`	string	Primary clinical use case(s)
`pubmed_ids`	string	Semicolon-separated PubMed IDs (PMIDs) for supporting evidence
`editorial_pick`	string	Editorial award category (best-value, quality, budget, plant-based, convenience) or blank
`amazon_asin`	string	Amazon Standard Identification Number for product lookup

Citation

If you use this dataset in research or applications, please cite:

Verified Supplement Data. (2026). Supplement Evidence Dataset v1.
https://verifiedsupplementdata.com
Dataset: https://github.com/verifiedsupplementdata/supplement-evidence-dataset

License

This dataset is released under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.

You are free to share and adapt this dataset for any purpose, including commercial use, as long as you provide attribution.

Updates

This dataset is updated monthly. Prices are verified against Amazon US listings. New products and categories are added as they are reviewed on verifiedsupplementdata.com.

Contact

Website: verifiedsupplementdata.com
Data methodology: verifiedsupplementdata.com/methodology/
Editorial standards: verifiedsupplementdata.com/about/

Supplement Evidence Dataset v1

Dataset Description