Optimum Nutrition Micronised Creatine Review — Is It Worth It?

Optimum Nutrition Micronised creatine is the premium mainstream option in a category where the product is fundamentally the same across brands. The micronisation process makes a genuine difference to mixability, and ON's quality standards are as reliable as ever — but whether that justifies the price premium over budget creatine depends on your priorities.

What Is It?

ON Micronised Creatine Powder is creatine monohydrate that has been processed to a finer particle size than standard creatine. The micronisation reduces the powder's particle size, which improves its dispersion in water and reduces the gritty residue at the bottom of the glass that plagues cheaper versions.

Ingredients & Nutrition

Per 5g serving: 5g of creatine monohydrate, nothing else. Like all pure creatine products, it's a single-ingredient formula. The difference is in the processing — the micronised version disperses more completely in liquid, which may marginally improve absorption rates, though the research on this is not definitive.

Each 317g tub (the standard size) contains approximately 60 servings at 5g each.

Taste & Mixability

Micronisation is the key practical advantage here. Where standard creatine can leave a residue and resist full dissolution, ON's micronised version disperses cleanly in water, juice, or a protein shake. There's minimal grittiness and no clumping. If you've ever mixed basic creatine and found the gritty residue at the bottom off-putting, this is a meaningful improvement.

No taste, as expected from an unflavoured creatine product.

Effectiveness

Creatine monohydrate's effectiveness is well-established regardless of brand. ON uses Creapure — a German-manufactured creatine monohydrate that is widely regarded as the highest-purity creatine available. Creapure is also NSF Certified for Sport, which provides additional assurance for athletes subject to drug testing. The underlying performance benefits are the same as any creatine: improved ATP regeneration, enhanced strength and power output, and support for lean mass over time.

Value for Money

At £19.99 for approximately 60 servings, the cost is around £0.33 per serving — three times the cost of MyProtein or Bulk's pure creatine. The justification is Creapure's purity certification and the better mixability from micronisation. For tested athletes, the NSF certification via Creapure is worth the premium. For recreational gym-goers, the nutrition outcomes are indistinguishable from cheaper alternatives.

Verdict

ON Micronised Creatine is a premium creatine for people who want maximum quality assurance or who find standard creatine's mixability frustrating. The Creapure ingredient adds genuine third-party credibility. For recreational lifters, the nutritional outcome versus MyProtein or Bulk is identical — the premium is for peace of mind and better mixing. Both are valid reasons to pay more.

Rating: 8/10