Optimum Nutrition Micronized Creatine Powder 317g
by Optimum Nutrition
Compare Prices
Optimum Nutrition Micronized Creatine Powder is a no-frills creatine monohydrate supplement from one of the most trusted sports nutrition brands on the market. Best for Strength and resistance training athletes looking for performance and power output gains and Competitive or tested athletes who need Informed Choice-certified products.
According to the AIScored 0–100 scoring system, Optimum Nutrition Micronized Creatine Powder 317g by Optimum Nutrition scores 79.0/100, ranking #5 out of 32 products in Creatine (2026). Strongest category: Ingredient Quality (92.0/100). Weakest: Value For Money (68.0/100).
Is Optimum Nutrition Micronized Cre... worth buying?
“Optimum Nutrition's micronized creatine scores 79/100 for being precisely what competitive athletes want — pure monohydrate with Informed Choice certification, meaning every batch is tested for banned substances. There's nothing unnecessary here: zero fillers, flavours or additives, fully vegan and allergen-free, just straightforward creatine that works.”
What Do Reviewers Say About Optimum Nutrition Micronized Creatine Powder 317g?
Sample excerpts from currently available source material used in this product analysis.
"Good pre workout. I've been using this brand for a couple of years and I find it the most effective"
"Rich. New to pre workout supplements and I must say this stuff really works At first you’ll feel a tingling on your face and arms and that when it’s time to go to work The product also opens up airways making it easier to take deep breaths."
"Gain the most out of your supplements. This product is amazing for hair ,nails , skin and hood energy level"
"Love and recommend. Love the brand Wild nutrition! By women for women! And it really is an amazing product. So glad H&B stocks it!"
"Great!. A little disappointed with the customer service. However, the delivery was super quick and the product is great. Will definitely buy it again!"
How does Optimum Nutrition Micronized Creatine... score?
Detailed score breakdown and key findings from our analysis of 18 reviews across 3 sources.
Pros
- +Pure micronized creatine monohydrate — the most researched and evidence-backed form of creatine available
- +Informed Choice certified, meaning each batch is tested for banned substances — important for competitive athletes
- +Zero fillers, flavours, or additives; fully vegan and free from all major allergens
- +Micronized particle size mixes more cleanly in liquid than standard creatine, reducing grit and residue
- +Optimum Nutrition has a long-standing reputation for quality control and consistency across its product line
Cons
- -Serving size is 3.4g, which falls short of the 5g daily dose used in virtually all clinical efficacy studies — users need to scoop ~1.5 servings to hit the research-backed dose, reducing the effective yield to roughly 62 servings rather than 93
- -No loading protocol guidance on the label; new users unfamiliar with creatine may under-dose
- -Premium brand pricing means cheaper certified alternatives exist at the same or higher dose per gram
- -One Trustpilot submission flagged dismissive customer service, suggesting post-sale support may be inconsistent
Best For
Watch Out
- !The labelled serving of 3.4g is below the 5g therapeutic dose — budget for using more than one scoop per day
- !Creatine monohydrate can cause transient water retention in muscle tissue during the loading phase, which may temporarily increase scale weight
- !Users with pre-existing kidney conditions should consult a doctor before use, as is standard with any creatine product
- !Review pool for this specific product is effectively absent — scores are based on ingredient science and brand reputation rather than direct user-reported outcomes
What is Optimum Nutrition Micronized Creatine Powder 317g?
Optimum Nutrition Micronized Creatine Powder 317g is a creatine product by Optimum Nutrition in powder form, scoring 79.0/100 on AIScored.
- • Optimum Nutrition Micronized Creatine Powder is an unflavoured creatine monohydrate supplement designed for easy daily use.
- • The powder is micronized to reduce particle size, helping it mix more smoothly than standard creatine.
- • Each serving delivers 3.4g of creatine monohydrate, including approximately 3g of pure creatine.
- • Being unflavoured, it can be added to water, juice, shakes, or any other drink without affecting the taste.
- • A simple, reliable choice from an established sports nutrition brand.
What's Inside Optimum Nutrition Micronized Creatine Powder 317g?
Optimum Nutrition Micronized Creatine Powder 317g contains 1 active ingredient: Creatine Monohydrate (Micronized).
Active Ingredients
- Creatine Monohydrate (Micronized)
- 3.4g per serving
Clean Label Analysis
Pure micronized creatine monohydrate with nothing else added. Clean and straightforward. However, the serving size of 3.4g is below the standard 5g dose used in most clinical studies, meaning you need to use more than the recommended serving.
Is Optimum Nutrition Micronized Creatine Powder 317g Independently Tested?
Third-Party Tested
This product has been independently tested by third-party laboratories for purity, potency, and safety.
Certifications
Additional Specifications
- Creatine Form
- Monohydrate (Micronized)
How We Score Supplements
Our methodology analyses review data, ingredient science, and product information, then scores each product on a 0-100 scale across evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on reviews and ingredient evidence.
Ingredient Quality
Bioavailable forms, clinically effective dosages, clean label, minimal fillers.
Value for Money
Price relative to ingredient quality, dosage count, and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 100 means virtually no adverse reactions reported.
Certifications & Testing
Third-party lab testing, GMP certification, and independent quality verification.
Overall Score
Weighted combination of all factors. Our bottom-line recommendation.
How Does Optimum Nutrition Micronized Creatine Powder 317g Compare?
See how this product stacks up against the top-rated creatine in our database.
| Product | Score | Price |
|---|---|---|
| Optimum Nutrition Micronized Cre... (this) | 79.0 | £16.00 |
| Bulk Creatine Monohydrate (Creap... | 91.0 | £16.99 |
Price History (90 days)
Quick Facts
- Form
- Powder
- Dose
- 3.4g creatine monohydrate per serving (approx 3g pure creatine)
- Serving
- 1 rounded teaspoon (3.4g)
- Servings
- 93
- Vegan
- Yes
- Made in
- USA
Frequently Asked Questions
Is Optimum Nutrition Micronized Creatine Powder 317g worth buying in 2026? ▼
What is the best price for Optimum Nutrition Micronized Creatine Powder 317g in the UK? ▼
What are the pros and cons of Optimum Nutrition Micronized Creatine Powder 317g? ▼
Is Optimum Nutrition Micronized Creatine Powder 317g third-party tested? ▼
How does Optimum Nutrition Micronized Creatine Powder 317g compare to Bulk Creatine Monohydrate (Creapure) 500g? ▼
What the Data Says About Creatine
Why do 87% of UK creatine products lack third-party certification?
87% of UK creatine products have zero independent certification. Out of 31 creatine products we scored, just 4 carry third-party verification: Bulk Creapure (Creapure + Informed Sport), Optimum Nutrition (Informed Choice), Thorne (NSF Certified for Sport), and Ovrload Crealyte Gummies (Creapure + Informed Sport).
The quality gap is real. Certified creatine scores 77.2/100 on average. Uncertified creatine scores 67.5. That's a 9.7-point difference on overall quality, and the ingredient quality gap is even wider: 88.5 vs 70.9.
Why so few? Third-party testing costs money, and UK regulations don't require it for sports supplements. Brands that invest in certification tend to use higher-grade raw materials too. Bulk Creapure, our top-scoring creatine at 91/100, uses Creapure-branded monohydrate manufactured in Germany with documented purity testing. Most budget creatine powders don't disclose where their creatine comes from or whether it's been independently verified.
If purity matters to you, look for one of these four certifications on the label: Creapure, Informed Sport, Informed Choice, or NSF Certified for Sport.
Is creatine monohydrate better than HCL or other forms?
Monohydrate wins. The top 5 creatine products in our database are all monohydrate-based, led by Bulk Creapure at 91/100. That's not a coincidence.
Creatine monohydrate has decades of clinical research behind it. Over 500 published studies confirm its effects on muscle strength, power output, and recovery. HCL, ethyl ester, and buffered forms have far less evidence, and none have been shown to outperform monohydrate in head-to-head trials.
The 'better absorption' claim for HCL sounds compelling, but there's limited independent data to support it at the doses you'd actually take. Monohydrate is also the cheapest form by a wide margin.
The bloating concern with monohydrate is real for some people, but it's usually a loading-phase issue. Starting at 3-5g daily (no loading phase) avoids it for most users.
Disclaimer: AIScored provides research-backed summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Affiliate links may earn us a commission at no extra cost to you.
What Are Other Top Creatine?
Other top-rated creatine you might want to compare.
Featured in Our Guides
This product is recommended in the following curated guides.
Feedback & Suggestions
Spotted an issue? Wrong price, incorrect data, or something else off? Let us know and we'll fix it.
Missing a product you'd like us to review? Tell us the product name and we'll consider adding it.