Product review

Optimum Nutrition Micronized Creatine Review

Optimum Nutrition's unflavored micronized creatine monohydrate is the benchmark plain option. It is the same evidence-backed ingredient as fancier products, usually at a better price per serving.

Check price on Amazon

Written by Supplements Unpacked Editorial Team

Published Jun 21, 2026

Scorecard

Ingredient evidence 10/10 Plain creatine monohydrate, the most studied form.

Dose transparency 9/10 A single 5 g creatine monohydrate serving.

Mixability 7/10 Micronized and unflavored; mixes well, slight grit possible.

Value 9/10 Typically among the best price per serving.

Product details

Brand: Optimum Nutrition
Form: Micronized powder (unflavored)
Serving size: 5 g (about 1 rounded teaspoon) daily
Price: Check current price on Amazon

Key ingredients

Creatine Monohydrate (micronized): 5 g

Pros

Pure creatine monohydrate, the most researched form, with nothing else added
Micronized so it mixes into water or a shake without much grit
From a long-established brand with broad retail availability
Unflavored, so it works in any drink
Strong value per serving

Cons

Unflavored powder can still settle or taste chalky to some people
You measure your own dose with a scoop
Prices on Amazon move around, so check before buying

Who it's for

People who want a no-frills, proven creatine monohydrate
Anyone mixing creatine into a flavored shake or juice

Who should skip it

Creatine supports exercise performance and muscle alongside training and is not a medicine
Talk to a doctor first if you have kidney disease, are pregnant or breastfeeding, or take prescription medication

Value & full review

How it works

This is plain creatine monohydrate, the form behind the great majority of creatine research. A daily 5 g serving tops up the creatine stored in your muscles, which supports short, powerful efforts and helps you get more out of resistance training over time. There is nothing else in the tub, which is exactly what you want from a creatine supplement.

What we like and what to watch

Optimum Nutrition has sold this for years, it is widely available, and the price per serving is usually hard to beat. Being unflavored, it mixes into anything, though some people notice a slight chalkiness in plain water. Because it sells through Amazon, the price can move, so check it before you buy.

Bottom line

A dependable, good-value pick. If you do not care about flavor and just want proven creatine monohydrate, this is an easy choice.

Alternatives to consider

Muscle Velocity Creatine Muscle Velocity A single-ingredient micronized creatine monohydrate powder, third-party tested and sold in a berry flavor. Force Factor Creatine Monohydrate Force Factor Unflavored micronized creatine monohydrate, a straightforward and widely available option.

Frequently asked questions

Does Optimum Nutrition Micronized Creatine work?

Unflavored micronized creatine monohydrate from one of the most established sports nutrition brands. Supplies 5 g of pure creatine monohydrate per serving to support strength, power, and muscle alongside training. As with any supplement, results build over weeks and work best alongside regular resistance training and consistent daily use.

How do you take Optimum Nutrition Micronized Creatine?

The usual approach is 5 g (about 1 rounded teaspoon) daily, every day, including rest days. There is no need to load; a steady daily 5 g builds your muscle stores within a few weeks.

Is Optimum Nutrition Micronized Creatine safe?

Creatine supports exercise performance and muscle alongside training and is not a medicine. Talk to a doctor first if you have kidney disease, are pregnant or breastfeeding, or take prescription medication