Micronized Creatine Powder Unflavored Review

Q: Is Optimum Nutrition a trustworthy supplement brand?

Optimum Nutrition receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1986 and headquartered in Downers Grove, IL, United States, the company offers 311 products in their lineup. Note: Optimum Nutrition has 5 historical regulatory incidents on record, which are factored into the trust score.

What We Researched

1 active ingredient analyzed · 10 brand certifications checked · Page generated: Sep 2026

100

Product Score Excellent

100

Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

Ingredient	Amount	% DV
Creatine Monohydrate	5 g	†

Bioavailability Excellent

Absorption Rating

Creatine Monohydrate Good

Other Ingredients Excellent

Fillers & Additives

No inactive ingredient data available.

Efficacy Excellent

Dosage Analysis

Creatine Monohydrate 5 g Effective

Supplement Facts

Ingredient	Amount	% Daily Value
Creatine Monohydrate	5 g	†

Brand Trust Report

Certifications

10 certifications

Consumerlab Source available Primary evidence

Informed Sport Source available Primary evidence

Labdoor Source available Primary evidence

Nsf Certified For Sport Source available Primary evidence

Usda Organic Source available Primary evidence

Vegan Certified Source available Primary evidence

Fda Gmp Inspections Source available Primary evidence

Non Gmo Project Source available Primary evidence

Nsf Gmp Source available Primary evidence

Informed Choice Supporting evidence unavailable checked 2026-05-05

Transparency

5 claims

Third Party Testing Claim — Verified Evidence available Evidence

Testing Lab Disclosure — Claimed Evidence available Evidence

In House Testing — Verified Evidence available Evidence

Contains Proprietary Blend — True Brand claim; evidence unavailable checked 2026-05-05

Violation History

5 incidents

Prop 65 Lead2025-07-21 Source available Primary source

Prop 65 Lead2024-11-22 Source available Primary source

Recall Various nutritional and beverage products2022-07-28 Source available Primary source

Prop 65 Lead2017-03-10 Source available Primary source

Lawsuit Deceptive claims about the plant-based enzyme 'Aminogen' and its effect on protein digestion and absorption.2013 Source available Primary source

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Frequently Asked Questions

Is Optimum Nutrition Micronized Creatine Powder Unflavored a good supplement?

Optimum Nutrition Micronized Creatine Powder Unflavored received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 57 servings per container. The manufacturer, Optimum Nutrition, holds a brand trust score of 100/100.

What are the ingredients in Optimum Nutrition Micronized Creatine Powder Unflavored?

Optimum Nutrition Micronized Creatine Powder Unflavored contains 1 active ingredients: Creatine Monohydrate (5 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Optimum Nutrition Micronized Creatine Powder Unflavored safe to take?

GoodSupp reviewed the inactive-ingredient data available for Optimum Nutrition Micronized Creatine Powder Unflavored. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Optimum Nutrition a trustworthy supplement brand?

Optimum Nutrition receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1986 and headquartered in Downers Grove, IL, United States, the company offers 311 products in their lineup. Note: Optimum Nutrition has 5 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.