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Creatine

Klean Creatine

315 g tub, unflavored (SKU KA57692P-315), about 60 servings of 5 g creatine monohydrate

$34.50US price, checked Oct 20, 2026

Plain 5 g creatine scoop that NSF's Certified for Sport database lists

Check price at Klean Athlete Full review →

Creatine

Thorne Creatine

90-serving container (SKU SF903), 5 g creatine monohydrate per scoop

$44US price, checked Oct 23, 2026

Single-ingredient 5 g creatine scoop with an NSF Certified for Sport listing

Check price at Thorne Full review →

Criterion	Klean Creatine	Thorne Creatine
US price	$34.50Checked Oct 20, 2026 · Price details in the review	$44Checked Oct 23, 2026 · Price details in the review
Three-year ownership estimate	$664.14 Planning total.	$579.32 Planning total.
Choose if	You want plain creatine monohydrate from a product in NSF's Certified for Sport database, with lot numbers you can check.	An athlete subject to drug testing, or anyone who wants a plain daily 5 g dose of creatine monohydrate from a product in NSF's Certified for Sport database.
Main trade-off	Klean's page asks you to log in to add to cart, and returns carry a 15% processing fee plus shipping.	Approved returns carry a 25% restocking fee, and Thorne doesn't state the net weight.
Key specifications	Dose per serving: 5 g creatine monohydrate (1 scoop, approximately 5 g) Servings per container: Approximately 60 on Klean's label. NSF's 315 g package at 5 g a serving works out to 63 Price per serving: About $0.58 at the $34.50 retail price and 60 servings Form: Unflavored powder, with Other ingredients: None Certification: NSF Certified for Sport lists two entries for the 315 g unflavored powder, with 2 and 16 certified lots Directions: 1 scoop daily in 8 oz of water or another drink, around exercise or with a meal on rest days Free-of statements: NSF's US entry lists gluten free and GMO free. Its other entry lists artificial flavor, artificial preservative, dairy, GMO, gluten, wheat and soy free Warning: Klean says to consult a health professional if you're pregnant, nursing, have a health condition or take any medication Where to buy: Klean's page lists a retail price but asks for a login to add to cart	Dose per serving: 5 g creatine monohydrate (1 scoop) Servings per container: 90 Form: Micronized creatine monohydrate powder, with no other ingredients Certification: NSF Certified for Sport, with 66 certified lots in NSF's database. The mark also appears on Thorne's product page Directions: 1 scoop daily in at least 8 oz of water, juice or another beverage. Thorne says it can be taken 30 to 90 minutes before or after exercise Allergen statements: Gluten free, dairy free and soy free, per Thorne
Exact variant	315 g tub, unflavored (SKU KA57692P-315), about 60 servings of 5 g creatine monohydrate	90-serving container (SKU SF903), 5 g creatine monohydrate per scoop
Dimensions	Not stated by the manufacturer. Klean's page gives approximately 60 servings of one scoop (about 5 g) and no net weight or tub size. NSF's listings give a 315 g package.	Thorne doesn't state the container size or net weight. NSF lists 450 g and 900 g packages, which match 90 and 180 servings.
Installation	No installation. Klean says to mix 1 scoop daily with 8 ounces of water or another drink. For best results it suggests a carbohydrate-containing drink or food 30 minutes before exercise, or a recovery drink right after. On rest days it says to take 1 serving daily with a meal.	No installation. Thorne's directions are to mix 1 scoop a day with at least 8 ounces of water, juice or another beverage. They also say it can be taken 30 to 90 minutes before or after exercise.
Materials	The only ingredient is creatine monohydrate, 5 g a serving, and the label says Other ingredients: None. Klean's page shows icons for gluten free, GMO free, vegan and vegetarian. Klean's page and product sheet don't name the creatine's source or say what the tub is made of. The product sheet says it's manufactured for Klean Athlete, Pittsburgh, Pennsylvania.	The only listed ingredient is creatine monohydrate, which Thorne describes as micronized. There's no other-ingredients line. Thorne labels it gluten free, dairy free and soy free. It doesn't state the flavor or the container material.
Warranty	Not stated by the manufacturer. Klean's return policy says it guarantees quality, purity and potency through the expiration date, but gives no warranty term.	Not stated by the manufacturer.
Returns	30 days from receipt, with preauthorization and a 15% processing fee plus shipping. Claims of shortage or damage must be made within 7 days of receiving the package. Authorized returns must reach Klean within 14 days of authorization. Returns are credited on receipt, less the 15% fee and the cost of shipping. The policy doesn't say whether an opened tub qualifies.	Thorne's returns FAQ says you can request a return within 60 days of the date you bought from Thorne. Its 60-Day Satisfaction Guarantee covers products bought from Thorne's website or an authorized seller in the United States, for a refund or a product credit. All approved returns carry a 25% restocking fee. Thorne doesn't refund or exchange product past its expiration date. The page doesn't say who pays return shipping. For opened products, it only asks you to call Customer Service.
Unresolved questions	Which NSF entry a given tub's lot number sits in The NSF certification date, which neither entry shows Whether the page's retail price applies to every buyer, since it asks you to log in Whether an opened tub qualifies for return Who makes the creatine and where it comes from Klean's net weight for the tub	Whether a given tub's lot number is among the 66 lots NSF lists Any subscription discount, which neither size's product page shows The container size and net weight of SKU SF903, which Thorne doesn't state Why Thorne's page says "derived from natural flavors" for an unflavored powder Who pays return shipping The source or manufacturer of the creatine monohydrate

These comparisons use published specifications, not head-to-head tests. Prices and terms are dated. Unknown costs are not zero. Check the exact variant before you buy.