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Product Review

Thorne Glutathione-SR 100mg

Thorne · Capsule · 100 mg

Price/day

€0.93

Dose

100 mg

Servings/pack

60

Pack price

€56.00

NSF Certified

Transparency Index

7.6/10

Recommended SR technology reduces peak spikes and improves tolerability, but the per-capsule dose is relatively low.

Rating breakdown

Evidence for ingredient 6.0/10

Same evidence base as other oral glutathione; the advantage is the extended-release delivery.

Value for money 4.0/10

€0.93 per 100 mg is expensive; therapeutic amounts require multiple capsules.

Product quality 9.0/10

Thorne uses a quality-focused SR matrix and tests for oxidation.

Label honesty 9.0/10

All excipients disclosed, including plant-based SR polymers.

Third-party testing 8.0/10

NSF certification plus internal HPLC analysis per batch.

Product Description

Each capsule contains 100 mg reduced glutathione in a matrix releasing over six hours, intended to maintain more stable blood levels.

What We Like

  • Slow release prevents sulfur aftertaste
  • Very clean formulation, allergen-free
  • Thorne provides COAs to practitioners on request

What We’re Missing

  • Low single dose requires multiple capsules for therapeutic amounts
  • SR matrix contains hypromellose, which some users prefer to avoid

Usage Recommendation

1–3 capsules spread throughout the day, ideally on an empty stomach or 30 minutes before meals.

Ingredient dossier

Glutathione is the body's most celebrated antioxidant. As a supplement, the evidence is far less impressive than its reputation.

Read full dossier: Glutathion →