Optimum Nutrition's Micronized Creatine is pharmaceutical-grade creatine monohydrate in four distinct delivery formats: the classic unflavoured Powder (5g/serving), convenient Capsules (2.5g per 2-capsule serving — requires double dosing for clinical effect), the new Gummies (5g total across 4 gummies, 1.25g each), and Creatine+ (5g creatine with additional electrolytes and vitamins). All four formats deliver the same molecule — creatine monohydrate — which has over 500 peer-reviewed studies and the ISSN's unconditional endorsement as the most effective ergogenic nutritional supplement for high-intensity exercise.
ON has been making pharmaceutical-grade creatine since the 1990s. Their quality controls, banned substance testing, and consistent dosing accuracy make this one of the most trusted creatine brands on the market — not just in sports nutrition generally, but specifically because ON is the official supplement partner of major professional sports leagues that drug-test their athletes.
The format you choose matters primarily for convenience and cost, not efficacy — the biological outcome of 5g creatine monohydrate per day is identical regardless of whether it arrives in a powder, a capsule, a gummy, or a functional drink mix. Choose the format that maximises daily adherence.
At-a-Glance · ON Micronized Creatine8.7/10
Formula
10
Dosing
9.5
Value
9.2
Transparency
10
Evidence
10
Testing
9.0
Powder price
~$0.38/serving
60 servings for $22.99
Capsules price
~$0.67/serving
for 5g dose (4 caps)
Gummies price
~$1.33/serving
for 5g dose (4 gummies)
Creatine+
~$0.60/serving
30 servings ~$18.99
What it is
Pharmaceutical-grade micronized creatine monohydrate. Available in 4 formats: Powder, Capsules, Gummies, Creatine+. All deliver the same creatine molecule.
Active compound
Creatine monohydrate — the ISSN-endorsed gold standard form with 500+ RCTs
Recommended daily dose
5g per day (maintenance). Powder/Creatine+/Gummies achieve this in one serving; Capsules require 4 per day.
Third-party testing
Banned substance tested — standard across ON's creatine product line
Evidence level
Strongest in all of sports nutrition — 500+ peer-reviewed studies, ISSN Position Stand endorsement
Best Price Available
~$22.99 for 60 servings (Powder) on Amazon
Buy on AmazonAffiliate link · no extra cost to you · your price never changes
🏆 Quick Pros & Cons
Pharmaceutical-grade creatine monohydrate — the most evidence-backed ergogenic supplement in sports nutrition
5g per serving (Powder, Gummies, Creatine+) — exactly the ISSN-recommended maintenance dose
Four formats to match different adherence preferences — powder for value, gummies for convenience
Banned substance tested — standard ON quality verification across all creatine formats
Competitive price per serving vs premium brands — $0.38/serving for Powder vs $0.48–$0.87 for NSF-certified competitors
ON brand credibility — official supplement partner of NFL, NBA, MLS; decades of quality track record
Capsule format requires 4 capsules for the 5g clinical dose — serving size inconvenience
Gummies are the most expensive per gram of creatine in the lineup (~$1.33/5g serving)
No third-party sport certification (NSF/Informed Sport) — ON does its own banned substance testing, not independent batch testing
Creatine+ contains additional ingredients (electrolytes, vitamins) that are at low doses — nice but not clinically significant
Full Verdict Breakdown
FORMULAScore: 10/10
Pure pharmaceutical-grade creatine monohydrate across all formats
All four ON creatine formats contain the same active compound: micronized creatine monohydrate. Micronized means the particle size has been reduced, improving solubility and reducing the slight grittiness common in non-micronized creatine. The purity is pharmaceutical-grade — ON manufactures in their own cGMP facilities with quality testing at multiple production stages.
The Creatine+ format adds a blend of electrolytes (sodium, potassium) and B vitamins alongside the 5g creatine — useful for athletes who also want a hydration supplement, though the electrolyte doses are modest (not equivalent to a dedicated hydration product). The core creatine content is identical across all formats.
DOSING VERDICTScore: 9.5/10
Powder, Gummies, and Creatine+ nail the 5g dose; Capsules require double the label serving
The Powder, Gummies (4 gummies), and Creatine+ all deliver the ISSN-recommended 5g daily maintenance dose at one serving. This is correct and convenient. The Capsule format provides 2.5g per 2-capsule serving — which means users need to take 4 capsules daily to achieve the clinical maintenance dose. This is an important distinction for capsule users: the serving size as labelled is half a clinical dose.
For loading phase users (optional): 20g/day in four divided doses for 5-7 days. Achievable with any format but most practical with the Powder mixed into multiple daily drinks.
VALUEScore: 9.2/10
Powder is exceptional value; Gummies are a convenience premium
The Powder at $0.38/serving is among the best value creatine monohydrate products available from a trusted brand with quality controls. BulkSupplements offers creatine at $0.10/serving, but without ON's quality infrastructure and banned substance testing. Thorne and Momentous offer NSF-certified creatine at $0.48 and $0.87 respectively — ON's Powder sits between these tiers in both price and certification level.
The Gummies at $1.33 per 5g serving are a meaningful convenience premium — appropriate for users who will not consistently take powder or capsules, and where improved adherence justifies the cost. Creatine you don't take is worthless; gummies you actually take every day beat powder you forget.
EVIDENCEScore: 10/10
The most evidence-backed ergogenic in all of sports nutrition — 500+ RCTs
Creatine monohydrate's evidence base requires no qualification. The ISSN Position Stand (Kreider et al., 2017) — based on systematic review of over 500 peer-reviewed studies across 30+ years — concludes creatine monohydrate is the most effective ergogenic nutritional supplement for increasing high-intensity exercise capacity and lean body mass during training. No other form of creatine (HCl, ethyl ester, buffered) has been shown to produce superior results in independent controlled human trials.
The specific evidence for ON's creatine products: ON's manufacturing quality and banned substance testing give confidence that the label dose is accurate and the product is free from contaminants. The performance evidence is for creatine monohydrate generally — the compound's pharmacology does not vary between legitimate pharmaceutical-grade manufacturers.
Who Should Buy / Who Should Skip
Buy if
Any strength or power athlete seeking to improve performance — creatine monohydrate works universally for this goal
Users who want flexibility — 4 format options to match different adherence styles
Budget-conscious users who want trusted-brand creatine at sub-$0.50/serving (Powder format)
Competitive athletes who need a trusted brand associated with professional sport
Skip if
Competitive drug-tested athletes who specifically require NSF Certified for Sport or Informed Sport certification — choose Thorne or Momentous for those credentials
Users who have determined they have a genuine intolerance to creatine monohydrate (rare) — try the HCl form
Creatine Monohydrate — 500+ RCTs, Grade A Evidence
Methylguanidine-acetic acid · PCr energy system · ISSN-endorsed ergogenic
ISSN Position Stand Endorsed500+ Peer-Reviewed StudiesMost Evidence-Backed Ergogenic
Maintenance dose
3-5g/day
Loading (optional)
20g/day × 5-7 days
Saturation
3-4 weeks (maintenance)
Performance effect
5-15% strength/power
Phosphocreatine System Explained
Creatine is stored as phosphocreatine in skeletal muscle. During maximal-effort exercise (heavy lifting, sprinting), ATP is consumed faster than oxidative phosphorylation can replenish it. Phosphocreatine instantly donates its phosphate group to ADP via creatine kinase, regenerating ATP. Supplementing creatine monohydrate at 3-5g/day increases muscle PCr stores by 10-40%, extending the duration and power output in this fast energy system. The cumulative effect: more reps at a given weight, better sprint performance, faster recovery between sets, and greater long-term lean mass and strength gains from equivalent training.
How It Compares
Product
Score
Cost
Key Advantage
Key Weakness
This product
ON Micronized Creatine Powder
8.7/10
~$0.38/serving (Powder)
Brand credibility + great price + quality controls
ON Micronized Creatine differentiates through the four-format ecosystem — giving users the choice between value (Powder), convenience (Capsules, Gummies), or a functional hybrid (Creatine+). No other major creatine brand offers this format range at equivalent quality and brand credibility. The core creatine is identical across all formats; the choice is entirely about the daily adherence experience that works best for you. On pure value for daily supplementation, the Powder format is hard to beat from a trusted brand.
Real-World Testing — Jake's Personal Log
Testing Protocol
8 weeks (Powder format) · Jake Reynolds, CISSN
Duration
8 weeks (Powder format)
Dose Tested
5g powder in morning water daily
Application
Strength/power sport — resistance training 5x/week
Measurement
Compound lift totals at weeks 0, 4, and 8; body weight tracking
1
Performance — expected creatine response
✓ Standard Creatine Response
Week 0-1
No meaningful change — phosphocreatine stores building.
Week 3-4
Noticeable improvement in compound lift strength and training volume capacity.
Week 8
Squat: +12.5kg from baseline. Deadlift: +15kg. Bench: +7.5kg. Body weight: +1.8kg (intramuscular water + lean mass).
The performance response was entirely consistent with the published creatine literature — steady improvement beginning at week 3, significant by week 4-5. This is what 5g/day pharmaceutical-grade creatine does. There is nothing special about ON's creatine relative to other pharmaceutical-grade monohydrate — the response is driven by the compound, not the brand.
Mixability of the powder was excellent — micronized particle size dissolved completely in 200ml of water with gentle stirring. No grittiness, no residue, no taste.
2
Gummy format — adherence test over 2 weeks
✓ Better Adherence for Non-Routine Users
Context
A second tester who consistently forgot to take powder supplementation.
Protocol
Switched to ON Creatine Gummies for 2 weeks (4 gummies daily = 5g creatine).
Result
100% daily adherence over 14 days vs 62% adherence on Powder format.
The Gummies solved an adherence problem that the Powder could not. For the specific user who does not have a consistent supplement routine and finds mixing powder inconvenient or forgettable, the gummy format's real-world value is meaningful. The compound is identical; the delivery that gets consumed every day wins over the better-value option that gets missed regularly.
Overall Testing Observation
ON Micronized Creatine delivered the expected creatine performance response with excellent mixability and quality. The format ecosystem is the genuine differentiator — the Gummies specifically solved an adherence problem for a non-routine supplementer that powder could not. For daily-routine users, the Powder at $0.38/serving is the strongest value in the ON creatine line.
Dosing Protocols
Simple protocol. Daily consistency is the only variable that matters with creatine.
Use Case / Condition
Recommended Dose
Evidence Level
Powder — daily maintenance
5g (1 scoop) in water or any beverage — timing flexible
Strong
Capsules — daily maintenance
4 capsules (2x 2-capsule servings) per day — morning and evening
Strong
Gummies — daily maintenance
4 gummies per day — take together or split
Strong
Creatine+ — daily maintenance
1 serving (5g creatine + electrolytes + B vitamins)
Strong
Optional loading phase (all formats)
20g/day in 4 divided doses for 5-7 days — reaches saturation faster
Strong
💡Format selection guide: Powder if value is the priority. Gummies if you struggle with supplement routines. Capsules if you travel frequently or dislike mixing. Creatine+ if you also want electrolyte support from a single product.
Side Effects & Drug Interactions
⚠ Potential Side Effects
Intramuscular water retention in first week — normal and desired; makes muscles appear fuller
Minor weight gain (0.5-2kg) in first 2 weeks — water, not fat
Mild GI discomfort if entire loading dose taken at once — split doses fix this
No significant adverse effects documented in hundreds of safety studies at 3-5g/day
💊 Drug & Supplement Interactions
No significant drug interactions at standard maintenance doses
Kidney disease — standard precaution; creatinine elevation on blood tests is expected and not pathological
Avoid combining with diuretics or nephrotoxic medications during loading phases
Frequently Asked Questions
The Powder at $0.38/serving if value and flexibility are your priorities. The Gummies if adherence is a challenge — a creatine you take every day beats a cheaper one you forget. The Capsules if you travel frequently. Creatine+ if you want electrolyte support bundled in. The performance outcome is identical across all four.
ON conducts banned substance testing in-house and the products are used by professional leagues (NFL, NBA, MLS) as official supplements. However, ON Micronized Creatine does not carry NSF Certified for Sport or Informed Sport independent batch certification. For drug-tested athletes who require independent third-party certification, Thorne (NSF) or Momentous (NSF + Creapure®) are the appropriate alternatives.
No. Loading (20g/day for 5-7 days) is optional — it accelerates saturation to full muscle loading within 7 days instead of 3-4 weeks. Both protocols reach the same endpoint. Loading is appropriate when you want faster results; maintenance-only (5g/day from day 1) works equally well with patience.
Yes — creatine is compatible with all protein supplements. For users of Serious Mass, note that it already contains 5g creatine per serving — you do not need additional creatine supplementation on days you consume Serious Mass at the full serving.
ON Micronized Creatine is one of the strongest creatine options at its price point — pharmaceutical-grade monohydrate at $0.38/serving (Powder) from a brand with decades of quality track record and professional sports partnership. The four-format ecosystem is a genuine convenience differentiator. The one honest gap is the absence of independent NSF or Informed Sport certification — ON uses internal testing, which is strong but not the same as monthly independent batch testing. For non-competitive users, this gap is irrelevant. For drug-tested athletes, step up to Thorne or Momentous.
Best for
Strength and power athletes at any level seeking performance enhancement, users who want format flexibility (Powder/Capsules/Gummies/Creatine+), and budget-conscious users who want trusted brand creatine without the NSF certification premium.
Skip if
Competitive drug-tested athletes who specifically require independent NSF Certified for Sport or Informed Sport batch certification — Thorne is the correct alternative at $0.48/serving with full NSF certification.
Kreider RB et al. (2017). International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. JISSN, 14(1), 18.DOIPubMed
Rawson ES, Volek JS (2003). Effects of creatine supplementation and resistance training on muscle strength and weightlifting performance. Journal of Strength and Conditioning Research, 17(4), 822-831.PubMed
