Head to head · Creatine
Bloom Nutrition Creatine Monohydrate vs Optimum Nutrition Micronized Creatine Powder
Optimum Nutrition scores higher overall (8.8 vs 7.9 out of 10), mainly on quality & purity, value and transparency.
Updated September 2026 from our full reviews · How we score
TikTok Shop's pastel-tub creatine for women: a proper 5 g of micronized monohydrate per scoop, but about $0.50 a serving with no named certification.
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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.
We may earn a commission when you buy through these links — it never affects our scores. How we make money
We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
Choose Bloom Nutrition if…
- Bloom fans who want creatine that matches their routine
- Beginners who want an unflavored powder that hides in drinks
- Women new to creatine who prefer approachable branding
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 quality & purity, value, transparency
Side by side
| Creatine Monohydrate | Micronized Creatine Powder | |
|---|---|---|
| Our score | 7.9 / 10 | 8.8 / 10 |
| Efficacy (30%) | 9.4 | 9.4 |
| Quality & Purity (25%) | 7.2 | 8.6 |
| Value (20%) | 6.6 | 8.6 |
| Experience (15%) | 8.4 | 8.4 |
| Transparency (10%) | 7.0 | 8.5 |
| Form | Powder | Powder |
| Serving | 1 scoop (5.15 g)40 servings per container | 1 rounded teaspoon (5 g)60 servings per container |
| Price per serving | $0.50 | See retailer |
| Testing & certifications | Third-party tested | Informed Choice |
| Dietary | Non-GMO, Gluten-free, Vegan | Keto-friendly, Sugar-free |
| Key ingredients |
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|
| Flavors | 2 (Unflavored, Raspberry Lemon) | 5 (Unflavored, Mango Orange, Strawberry…) |
| Creator video reviews | 3 | 4 |
Pros and cons
Creatine Monohydrate
- 5 g of micronized creatine monohydrate per scoop, the standard research dose
- Unflavored version blends easily into coffee, smoothies or pre-workout, per buyers
- Labeled non-GMO, gluten-free and vegan-friendly
- Official TikTok Shop listing rated 4.7 stars across 9,600+ reviews
- About $0.50 per serving, well above mainstream creatine without extra certification
- Only a generic 'third party tested' claim; no NSF listing found
- 'Made for women' marketing on what is standard monohydrate
- Some buyers report grittiness and question the value
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 Monohydrate
Bloom Creatine delivers the right 5 g dose of micronized monohydrate and gets good marks from buyers, so it works as well as any basic creatine. The problem is price: you pay premium-brand money without the named third-party certification that premium competitors offer. Buy it if you love the brand; otherwise the same result costs less elsewhere.
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