Head to head · Creatine
Momentous Creatine (Signature Spec) vs Optimum Nutrition Micronized Creatine Powder
Optimum Nutrition scores higher overall (8.8 vs 8.7 out of 10), mainly on value. Momentous still leads on quality & purity and transparency.
Updated September 2026 from our full reviews · How we score
NSF Certified for Sport creatine with batch COAs; Momentous has swapped Creapure for its own 'Signature Spec' monohydrate made in a pharmaceutical facility.
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One of America's best-selling creatine tubs: 5 g of micronized monohydrate per scoop, Informed Choice certified, about $0.20–$0.30 a serving.
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We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
Choose Momentous if…
- Drug-tested athletes
- Buyers who want batch COAs and published test results
- Vegan and gluten-free diets
- You care most about quality & purity, transparency
Choose Optimum Nutrition if…
- Lifters who want a trusted, widely stocked brand
- Stirring into a daily protein shake
- Tested athletes who want Informed Choice screening
- You care most about value
Side by side
| Creatine (Signature Spec) | Micronized Creatine Powder | |
|---|---|---|
| Our score | 8.7 / 10 | 8.8 / 10 |
| Efficacy (30%) | 9.4 | 9.4 |
| Quality & Purity (25%) | 9.2 | 8.6 |
| Value (20%) | 7.4 | 8.6 |
| Experience (15%) | 8.4 | 8.4 |
| Transparency (10%) | 8.8 | 8.5 |
| Form | Powder | Powder |
| Serving | 1 scoop (5 g)90 servings per container | 1 rounded teaspoon (5 g)60 servings per container |
| Price per serving | $0.48 | See retailer |
| Testing & certifications | NSF Certified for Sport | Informed Choice |
| Dietary | Vegan, Gluten-free, Non-GMO, Sugar-free | Keto-friendly, Sugar-free |
| Key ingredients |
|
|
| Flavors | 3 (Unflavored, Lemon, Watermelon) | 5 (Unflavored, Mango Orange, Strawberry…) |
| Creator video reviews | 3 | 4 |
Pros and cons
Creatine (Signature Spec)
- Listed as NSF Certified for Sport (Unflavored, 450 g) on nsfsport.com
- Brand publishes Light Labs results and offers COAs for every batch
- Single ingredient: 5 g creatine monohydrate per scoop, vegan and gluten-free
- Brand specifies tight purity and heavy-metal limits plus microplastics and PFAS screening
- Reviewers consistently describe it as tasteless
- About $0.48 per serving at full price (roughly $0.36 on subscription)
- No longer Creapure, and the new raw-material source is not named
- Amazon feedback on texture, cold-water mixing and digestion is mixed
- No official TikTok Shop listing found
Micronized Creatine Powder
- 5 g of creatine monohydrate per serving, the dose used in most studies
- Unflavored version is a single ingredient with nothing else added
- ON lists its creatine as Informed Choice certified for banned-substance screening
- Large tubs cost about $0.20 per serving
- Neutral taste that disappears into shakes, per most buyer reviews
- Dissolvability is the top complaint; many buyers see grit in plain water
- Some buyers report tubs arriving without a scoop
- Not Creapure and not NSF Certified for Sport, unlike premium rivals
- Costs more per serving than budget bulk brands
Our verdicts
Creatine (Signature Spec)
Momentous offers some of the most thoroughly documented creatine on the market, with NSF Certified for Sport status and batch-level test results. It is an excellent choice for tested athletes and documentation-minded buyers, but the price is steep, and shoppers who valued it specifically for Creapure should know the raw material has changed.
Full review
Micronized Creatine Powder
A dependable, no-frills creatine from the category's best-known brand, with Informed Choice certification and a clean single-ingredient label. It is not the cheapest per gram and it does not fully dissolve in plain water, but it delivers exactly what the research supports at a fair price.
Full review