Here's the thing about creatine monohydrate: it's one of the most studied supplements in history. Over 500 published studies. The International Society of Sports Nutrition calls it "the most effective ergogenic nutritional supplement currently available." The research is settled.
The molecule itself is the same whether you buy it from a $0.18/serving bulk bag or a $1.66/serving branded tub. So what are you actually paying for when you pay more?
Two things: sourcing verification and third-party testing. Can the brand prove where their creatine comes from? And has an independent lab confirmed what's in the tub matches what's on the label?
We compared seven of the most popular creatine supplements on the market. Here's what separates them.
How we scored these
Creatine is a simpler product than a multivitamin, so the criteria are different from our daily supplement comparison. Six criteria, each scored 1-10:
Third-party certification (25%) -- NSF Certified for Sport and Informed Sport are the gold standards. They test for 270+ banned substances and verify label accuracy. "Third-party tested" without naming the lab is a weaker claim.
Purity and sourcing (20%) -- Is it Creapure (99.99% purity, German-manufactured, full traceability)? Or generic creatine with no disclosed origin? Creapure costs more but you know exactly what you're getting.
Price per serving (20%) -- The molecule is the same. If two products have identical certification and purity, the cheaper one wins.
Label transparency (15%) -- Are Certificates of Analysis publicly available? Can you actually verify the purity claims, or do you have to take their word for it?
Clean formula (10%) -- Is it just creatine? Or have they added fillers, artificial sweeteners, or unnecessary extras that inflate the price?
Customer experience (10%) -- Review scores, packaging quality, return policies. Can you actually cancel a subscription without fighting them?
The rankings
Momentous is the only creatine on this list with both NSF Certified for Sport and Informed Sport certification. That's dual independent verification. It also uses Creapure, the German-manufactured creatine monohydrate with 99.99% purity and full batch traceability.
Independent testing by third parties confirmed 99.8% potency accuracy and no detectable heavy metals. Single ingredient. Nothing else in the tub.
Yes, it's associated with Andrew Huberman, and yes, you're paying a brand premium over generic creatine. $0.44/serving is more than double BulkSupplements' $0.18. But the dual certification and Creapure sourcing are real, and if you're a tested athlete, nobody else on this list matches it.
- NSF Sport + Informed Sport (dual cert, only product here with both)
- Creapure sourced (99.99% purity, German manufactured)
- Single ingredient, no fillers
- 99.8% potency accuracy in independent testing
- $0.44/serving (2.4x the cheapest option)
- Huberman brand premium
- Some subscription cancellation complaints
Thorne has a strong reputation in sports medicine. NSF Certified for Sport. Used by professional sports teams and Olympic athletes. The unflavored version is single-ingredient creatine with nothing else added.
It's not Creapure, which means you don't get the same level of sourcing traceability as Momentous. Thorne also recently changed their formula, which upset some long-time users. At $0.49/serving it's the most expensive product on this list, slightly above Momentous, without the dual certification or Creapure sourcing that would justify the premium.
Still a solid product. The NSF Sport cert is real, the brand reputation is earned, and the unflavored formula is clean.
- NSF Certified for Sport
- Strong brand reputation in sports medicine
- Clean unflavored formula
- Not Creapure sourced
- Most expensive on this list ($0.49)
- Recent formula change complaints
- 2.4/5 Trustpilot (shipping/billing issues)
ON is the most widely available creatine on this list. You can find it at basically any supplement retailer. The unflavored version is single-ingredient creatine monohydrate, micronized for better mixing. Informed Choice certified, which is a step below Informed Sport but still independent third-party verification.
At $0.30/serving from the 60-serving tub (cheaper in larger sizes), it hits a good balance between certification and price. Not the cheapest, not the most certified, but strong on both. The Elite Series version carries full Informed Sport certification if you need it.
Packaging could be better. Several reviewers mention the small opening and lack of a scoop. It also doesn't dissolve well in cold water. Minor complaints for a product that does the basics right.
- Good balance of price and certification
- Informed Choice certified
- Widely available at retail
- One of the best sellers in the category
- Not Creapure
- Informed Choice, not Informed Sport (lower tier)
- Poor packaging (small opening, no scoop)
- Doesn't dissolve well in cold water
Naked's pitch is simplicity: one ingredient, nothing else, NSF certified, made in the USA. At $0.20/serving for the 1kg bag, it's one of the cheapest certified options available. Third-party tested for heavy metals. Vegan, non-GMO, gluten free.
The product itself is fine. Where Naked falls down is customer service. The Better Business Bureau gave them an F rating, with 29 out of 33 complaints going unanswered. Returns are only accepted on unopened products within 14 days. If you have an issue, good luck getting anyone to respond.
Some customers also report receiving partially-filled containers. Not a deal-breaker for everyone, but worth knowing before you order.
- NSF certified, heavy metal tested
- $0.20/serving (cheap for a certified product)
- Single ingredient, made in USA
- BBB F rating on customer service
- 14-day return policy, unopened only
- Reports of partially-filled containers
The cheapest creatine on this list, and it actually has NSF Certified for Sport. That's a combination you don't see often. FDA-registered cGMP facility. Single ingredient. $0.18 per serving from the 1kg bag.
The trade-off is the experience. It comes in a bag, not a tub. No scoop included. The bag is hard to reseal properly. Certificates of Analysis are available on request but aren't posted publicly on the website. Some other BulkSupplements products (not creatine specifically) have had heavy metal issues flagged by independent reviewers.
Trustpilot sits at 3.5/5 with 616 reviews. Mixed. The product itself tests clean, but the brand has trust issues from their broader product range.
- $0.18/serving (cheapest on this list)
- NSF Certified for Sport
- Single ingredient, cGMP facility
- Bag packaging, no scoop
- CoAs not publicly posted
- Heavy metal issues on other products in their range
- 3.5/5 Trustpilot
Transparent Labs adds HMB (1,500mg), Vitamin D (12.5mcg), and BioPerine to the standard 5g creatine dose. The question is whether those extras are worth paying 7-9x more per serving than a basic creatine monohydrate.
For most people, the answer is no. HMB research shows potential benefits for preventing muscle breakdown, but the effect is modest for experienced lifters who already train consistently. You can buy creatine and HMB separately for significantly less. The Informed Choice certification is legitimate, and the formula is transparent (they practice what their name promises), but the value equation is hard to justify.
At $1.35-1.66 per serving, this is the most expensive creatine on the list by a wide margin. The 4.5/5 Trustpilot score is strong, and counterfeits on reseller sites are a reported issue, which says something about demand.
- Full dose transparency (lives up to the name)
- Informed Choice certified
- HMB and Vitamin D included
- 4.5/5 Trustpilot
- $1.35-1.66/serving (7-9x the cheapest option)
- HMB benefit marginal for experienced lifters
- Can buy creatine + HMB separately for less
- Counterfeits on third-party sites
Nutricost is cheap. $0.19/serving. But cheap is the only thing it has going for it.
The facility is GMP compliant and NSF certified, but the product itself carries no sport certification. That's an important distinction. Certifying a facility means the building passed inspection. Certifying a product means what's inside was independently tested. Nutricost has the first but not the second.
Worse: they refuse to share Certificates of Analysis publicly, citing "proprietary information." There is nothing proprietary about creatine monohydrate. It's one molecule. Refusing to share lab results is a red flag, not a business strategy.
If you're a competitive athlete, skip this entirely. If you're not, there are products on this list that cost almost the same (BulkSupplements at $0.18) and actually have NSF Sport certification on the product.
- $0.19/serving
- Multiple flavored options
- Non-GMO, gluten free
- No product-level sport certification
- Refuses to share Certificates of Analysis
- Not tested for banned substances
- Not suitable for tested athletes