Thorne

Vitamin C with Flavonoids

Vitamin C with Flavonoids research record is available for review.

Research last verified August 19, 2026

Score
Pending

Score Pending

A numerical Ethos Score requires structured evidence, formula, and sufficient coverage. Missing data is never converted to a pass or a zero.

The Takeaway

This review summarizes the available product-specific formula, cost, testing, and source information. Missing evidence remains clearly marked as pending.

Best For

  • • Shoppers comparing vitamin c formula, serving, and price details before purchase.

Watch Out For

  • • No independent USP/NSF certification confirmed
  • • No product-specific PFAS or public contaminant-test results located.

Why this score

Each dimension stays pending until the exact structured inputs needed to score it are available.

Evidence & Dose
Pending

A structured evidence-and-dose mapping has not been published for this product yet.

Formula Quality
Pending

A structured formula-quality mapping has not been published for this product yet.

Testing & Transparency
Pending

No independent testing detail was supplied for this exact product.

Toxins & Contaminants
Pending

No product-specific heavy metal result was supplied. PFAS: No Product-Specific Data Found.

Real Cost / Value
Pending

Verified price is approximately $0.26 per labeled serving.


Real Cost

90 capsules

One-time purchase

$23.00

Cost per serving: $0.26

About $7.67 for 30 days · $93.32 per year

Check Price

Formula

Key Active Ingredients

  • Citrus bioflavonoids mg

    75

Testing & Transparency

Independent certification

No public certification verification is listed

Public test source

No product-specific test source is linked

No independent testing detail was supplied for this exact product.

Toxin & Forever Chemical Report

This section shows product-specific contaminant and PFAS (forever chemical) test results where available. “No Product-Specific Data Found” is not a purity pass — it means no public test result was located for this exact product. Organic, non-GMO, and similar certifications are agricultural standards and do not verify contaminant levels.

Heavy Metals (Lead, Cadmium, Arsenic, Mercury)
No Product-Specific Data Found
PFAS / Forever Chemicals
No Product-Specific Data Found

No product-specific heavy metal result was supplied. PFAS: No Product-Specific Data Found.


Evidence

No structured expert findings are available for this product yet. The research summary in the score dimensions above reflects the current state of our analysis.

Sources

Thorne Vitamin C with Flavonoids Review — Ethos Select | Ethos Select