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Product checker
Paste the product before you trust it.
Check a product URL, proof document, claim, or stack someone sent from a friend, gym, clinic, or social feed. The result shows what it is, what appears verified, what is missing, and what may need caution.
Product pages
Ingredient lists
Social claims
Saveable check
Checker
Check a product, vendor, claim, or stack
Result state
Result status
In progress
A record exists, but one or more details still need freshness, lot, price, source, or handling review before confidence increases.
Canonical check · isthissafe.fyi
Creatine monohydrate powder
TL;DR: One of the cleanest performance checks when dose, purity, and additives are clear.
Trust 88Proof readout
Best for
Strength / training support
Worth knowing
Good for the goal if kept simple and consistent.
Habit fit
Daily load: simple when 3-5g is visible.
1-line verdict
Choose plain monohydrate with a clear serving and current testing.
Helped
Strong ingredient evidence, simple format, clear serving target.
Watch out for
Proprietary blends, candy formats, or special absorption claims.
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Trusted source check
Proof status: reviewed sample · documentation needed by product
The ingredient identity and common use case are clear in this example. Product-specific third-party testing, heavy-metal screening, and lot freshness are not visible until a real label or product page is attached.
Verified
Ingredient identity
Missing
Product-specific testing
Needs review
Brand documentation
Needs product-specific testing, source/manufacturing context, and freshness documentation before treating a specific tub as high-confidence.
What it is
Creatine monohydrate is one of the better-supported performance and recovery supplements. The main buying question is usually not whether creatine exists, but whether this specific product has clear dosing, minimal additives, and credible testing documentation.
What appears supported
Creatine monohydrate has broad support for strength, power, and training adaptation when used consistently. Plain monohydrate is usually the simplest format to evaluate.
What gets overstated
Claims about instant muscle gain, fat loss, testosterone increases, or proprietary absorption advantages often go beyond what a basic product label can prove.
What to check before buying
Check serving size, grams of creatine per serving, ingredient simplicity, third-party testing language, lot-specific documentation if available, and whether the brand hides behind a proprietary blend.
Where to learn more
Creatine monohydrateDose clarityThird-party testingHeavy-metal screening
Cautions and proof gaps
Needs product-specific testing documentation before buying.
Avoid proprietary blends that obscure the creatine dose.
Claims about instant results or special absorption should be treated as marketing until supported.
Check snapshot
Creatine monohydrate: Trust 88, Tier A, product-specific documentation still needed before buying.
Decision status
Added to comparison. Find a second creatine product, brand, or formula to compare side by side.
Saved decision loop
Save this check when the product is worth a second look.
Signed-in users can save the Creatine check, then return to the same product, source, score, proof gaps, and evidence tier from Saved checks.
Saved checks
The saved check keeps product, vendor, evidence tier, and trust summary together.
Private history
The dashboard brings recent checks back into a clean decision notebook.
Save your checks
Want to save this check for later?
Create a private workspace for saved checks, compare-later decisions, products that need more documentation, and future proof updates.
No medical certainty
The checker frames evidence quality and missing proof. It does not diagnose, prescribe, or produce dosing advice.
Plain-language proof
Results distinguish public claims, vendor documents, product-page language, and proof gaps.
Built for intake
Public product pages, manual stack details, COA text, and requested reviews can later move through one source-aware workflow.