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Product Review

Thorne Vitamin C with Flavonoids

Thorne · Capsule · 500 mg

Price/day

€0.47

Dose

500 mg

Servings/pack

60

Pack price

€28.00

NSF Certified

Transparency Index

8.4/10

Recommended Well-suited for sensitive stomachs who also want quercetin and rutin in the same capsule.

Rating breakdown

Evidence for ingredient 7.0/10

Vitamin C plus bioflavonoids is comparatively well studied for immune competence and oxidative stress.

Value for money 7.0/10

€0.47 per day is higher than discount vitamin C, but the added flavonoids and NSF certification justify the premium.

Product quality 9.0/10

Thorne produces under strict quality standards and uses only hypoallergenic excipients.

Label honesty 9.0/10

Full disclosure of flavonoid amounts and allergen status.

Third-party testing 9.0/10

NSF Certified for Sport covers purity, identity, and contamination.

Product Description

Thorne combines 500 mg vitamin C with 75 mg quercetin and 50 mg rutin per capsule. The hypoallergenic formulation is free from magnesium stearate and uses plant-based cellulose.

What We Like

  • NSF Certified for Sport
  • Synergistic flavonoids for better retention
  • Very clean ingredient list without fillers
  • Easy-to-swallow capsules

What We’re Missing

  • High cost per mg compared to simple ascorbates
  • No sustained release for consistently higher blood levels

Usage Recommendation

1 capsule daily with a meal. During acute stress, take one capsule morning and evening, provided stomach tolerability is maintained.

Ingredient dossier

Vitamin C is essential for collagen synthesis and other normal body functions, with approved EFSA claims. Megadoses show no clear benefit beyond adequate intake.

Read full dossier: Vitamin C (Ascorbic Acid) →