| Feature | Nutricost Creatine 500g | THORNE Creatine 450g |
|---|---|---|
| Price | £17.50 | £52.49 |
| Rating | 4.7/5 | 4.7/5 |
| Key Feature 1 | Pure micronized monohydrate, non-GMO & gluten-free, cGMP facility | NSF Certified for Sport — every production lot independently tested |
| Key Feature 2 | 100 servings at ~17.5p each — best price-per-serving in class | Per-lot Certificates of Analysis published; free from 200+ WADA banned substances |
| Weight/Capacity | 500g / 100 servings (5g each) | 450g / 90 servings (5g each) |
| Warranty | cGMP-compliant, FDA-registered facility; ISO-accredited lab tested for toxics | Pharmaceutical-grade purity; heavy metals below detectable limits on every batch |
Across thousands of verified purchases both products score 4.7/5 — reviewers repeatedly praise the clean single-ingredient formulas and noticeable improvements in strength and recovery. The most consistent criticism on both is identical: the powder settles faster than expected and needs a thorough stir, which reviewers note is a creatine monohydrate trait rather than a quality defect.
For the vast majority of UK home gym users, Nutricost at £17.50 delivers the same active molecule at a third of the cost — and at 100 servings it outlasts THORNE's 90-serving tub too. The only compelling reason to pay more for THORNE is NSF Certified for Sport documentation: if you compete in any WADA or UK Anti-Doping governed sport, or simply want batch-level proof of what you are putting in your body, the £35 premium is a proportionate investment.
Nutricost best for: budget-conscious UK home gym users, beginners who want a clinically backed dose without overpaying, and anyone who wants maximum servings per pound spent. THORNE best for: competitive athletes in drug-tested sport, fitness professionals with strict purity requirements, and buyers who want full per-batch documentation and peace of mind over ingredients.
Yes — creatine monohydrate is one of the most extensively studied sports supplements available. Decades of clinical research confirm it is safe for healthy adults at 3–5g per day, with no evidence of kidney or liver harm in people without pre-existing conditions. Both products are unflavored and free from common allergens.
A loading phase of 20g per day for 5–7 days saturates muscle stores faster, but it is entirely optional — taking 5g daily for 3–4 weeks reaches the same endpoint. Both tubs contain enough powder for either approach, with Nutricost giving you more headroom at 100 servings per tub.
The price premium is almost entirely attributable to NSF Certified for Sport testing. Unlike a one-time certification, THORNE pays for independent testing on every production lot and publishes the Certificates of Analysis publicly. For recreational home gym users this adds no performance benefit; for athletes in tested sport, it provides the independent verification that a governing body will accept.