Overview
This page is a scaffolded entry for HMTc Taxonomy v2.0 Category 16 (Dietary Supplements (Human)), Row 1: Oral solids: tablets/caplets. Studies for this row are still being read. Where a section is empty, the row has not yet accumulated contributing sources of the required kind.
Reading guide
Legal, regulatory and retailer teams can use the cited measurements, applicable limits and study limitations to assess the evidence for this category.
Quality teams can examine product form, measurement basis and sources of variation. Journalists and researchers can follow each reference to the original findings and methods.
Related tools and pages: heavymetalcertified.com · methodology
Evidence summary
Sources for this row will be listed here once they are catalogued.
Source Evidence Inventory
Sources for this row will be listed here once they are catalogued.
Supporting evidence and scope
Broader-scope sources for this row will be listed here when they are catalogued.
Federal/Regulatory Limits vs Field Findings
Regulatory limits for this row will be listed here once they are catalogued.
Controls and mitigation
Practical interventions to reduce heavy-metal load in this row, ordered by impact magnitude. Each lever names the magnitude of the effect with a cited source; cross-links to dedicated Mitigation pages where they exist.
- Sourcing levers — Not yet catalogued.
- Agronomic levers — Not yet catalogued. (See Agronomic mitigation for general agronomic mitigation context.)
- Processing levers — Not yet catalogued. (See Processing mitigation.)
- Formulation levers — Not yet catalogued. (See Formulation mitigation.)
- Testing and QC levers — Not yet catalogued. (See Testing and quality-control mitigation when published.)
- Packaging and storage levers — Not yet catalogued. (See Packaging and storage mitigation when published.)
How standards math uses this page
HMT&C certification thresholds for this row are developed under the certification program at heavymetalcertified.com, not on this page. The row-standard for this row is an aggregate computed from the contributing source pool in the row’s native finished-product basis; it is not a per-source decoration of any single value cited on this page. This public page reports literature evidence only.
Historical recalls and enforcement
Public regulatory events for this row, such as recalls and import alerts, will be listed here as they are catalogued.
Methodology
This page reports what the cited sources say about heavy-metal concentrations in oral solids: tablets/caplets. Speciation is non-substitutable (iAs vs tAs, MeHg vs tHg, Cr-VI vs total Cr). Basis is preserved (finished-product as sold unless the source specifies otherwise; see each row for the basis label). Non-detect handling follows each source’s reporting convention. Pooling is avoided across LOD/LOQ, period, geography, and analytical-basis differences. HMT&C certification thresholds for products in this row are developed under the certification program at heavymetalcertified.com, not on this page; this public page reports literature evidence only.
The applicable regulatory jurisdictions for this row are: FDA (DSHEA), USP, California Prop 65.
Sources
Sources for this row will be listed here once they are catalogued.
Sources
Source records associated with this topic. Inclusion does not establish that every finding applies to this product or ingredient. References above identify works cited in the text.
| # | Citation | Year | Type | Used on this page for |
|---|---|---|---|---|
| 1 | Sochacka et al. 2025. Spirulina and Chlorella Dietary Supplements—Are They a Source Solely of Valuable Nutrients?, International Journal of Molecular Sciences | 2025 | Peer-reviewed | PL/EU Al, Ba, Cd, Co, Cr, Cs, Cu, Ga, Mn, Mo, Ni, Pb, Rb, Sr, Tl, V, Zn occurrence in 52 commercially available microalgae-based dietary supplements sold on the Polish market: 29 Spirulina (Spirulina platensis) products and 23… (n=52) |
| 2 | Brzezinska-Rojek et al. 2023. Evaluation of the Safety and Potential Benefits of Beetroot-Based Dietary Supplements According to Their Elemental Composition, Biological Trace Element Research (published online 7 October 2023) | 2023 | Peer-reviewed | PL Cd, Pb, Al occurrence in 37 beetroot-based dietary supplements (10 tablets, 14 capsules, 13 powders) from Polish market (online and in-person shops); products… (n=37) |
| 3 | Al-Dhabi 2013. Heavy metal analysis in commercial Spirulina products for human consumption, Saudi Journal of Biological Sciences | 2013 | Peer-reviewed | AU/US/JP Ni, Zn, tHg, Pt, Mg, Mn occurrence in Twenty-five commercially available Spirulina dietary supplements in tablet (n = 16) and capsule (n = 9) forms, with… (n=25) |
| 4 | Brizio et al. 2013. Heavy metals occurrence in Italian food supplements, E3S Web of Conferences | 2013 | Peer-reviewed | IT tAs, Cd, Cr, Pb, tHg occurrence in Twelve food supplements seized in a Piedmont shop by Italian food-adulteration authorities: six single-herbal samples and six mixed… (n=12) |
Update history
No substantive edit history is available in this build. The full commit record is available in git.