Certification status
NSF Certified for Sport
Thorne Thorne® L-Glutamine Powder
Thorne's L-Glutamine is an unflavoured single-ingredient amino acid powder from a clinical-grade brand stocked by professional sports teams. NSF Certified for Sport — every batch screened against 280+ banned substances. £55.05 on Amazon UK, rated 4.6 from over 740 reviews.
Buy in the UK
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Why this certification matters
- NSF Certified for Sport
- NSF Certified for Sport is designed for athletes in tested sports; each lot is tested for substances banned by major sports organisations.
Frequently asked questions
- Why is Thorne L-Glutamine more expensive than other glutamine?
- Thorne is a clinical-grade brand with NSF Certified for Sport batch testing; the pricing reflects that and the serving count. Check the per-serving cost.
- What does NSF Certified for Sport cover?
- Each batch is screened against 280+ banned substances — the standard used across major professional leagues.
- How do you take it?
- Mix the unflavoured powder into water or a shake.
- Is glutamine necessary if I eat enough protein?
- A protein-rich diet already supplies glutamine; supplements are used around heavy training or recovery.
