Every claim on this page links to the study or the regulation behind it — the same standard we hold our label to. No proprietary blends, no invented citations, no promises the research hasn't earned yet.
The dose
Why 5 grams, and not a "proprietary" amount
The most-cited safety and efficacy review in the field — the International Society of Sports Nutrition's 2017 position stand — settled the dosing question after decades of trials: 3–5 grams a day is what keeps muscle creatine stores elevated once they're saturated. That's not a brand's opinion; it's the number the research converged on.
"Creatine monohydrate is the most effective ergogenic nutritional supplement currently available to athletes." — ISSN Position Stand, 2017
You can get there two ways. Load it: about 20g a day, split into four 5g doses, for 5–7 days, then drop to a daily maintenance dose. Or skip the loading phase and take 5g once a day — you reach full muscle saturation in roughly three to four weeks either way. Lundy is built for the second path: one scoop, every day, no math required.
Daily maintenance dose shown to sustain elevated muscle creatine stores in healthy adults.
Time to reach full muscle saturation on a flat 5g/day dose, with no loading phase.
The ingredient list
Why we didn't add anything else
Creatine now ships as monohydrate, HCl, ethyl ester, buffered ("Kre-Alkalyn"), nitrate, and more — each marketed as an upgrade. The ISSN reviewed the head-to-head evidence directly and found none of the alternative forms outperform plain creatine monohydrate. The "upgrades" are mostly marketing, not chemistry.
There's also a labeling loophole worth knowing about. Under FDA rules (21 CFR 101.36), a "proprietary blend" only has to disclose its total weight on the label — not how many milligrams of each ingredient are actually inside. That's fully legal. It also means you can't tell whether you're getting a research-backed dose of anything, or a fraction of one, hidden behind a longer ingredient list.
Lundy's label has one line: creatine monohydrate, 5g. Nothing to disclose because there's nothing else in the blend.
Alternative creatine forms shown to outperform monohydrate in controlled research.
Ingredient legally required to be disclosed by weight in a non-blended, single-ingredient product like ours.
Third-party tested, twice
What "twice" actually buys you
Here's what most labels don't tell you: the FDA does not test or approve a single supplement before it reaches a shelf. In the agency's own words, it "is not authorized to approve dietary supplements for safety and effectiveness before they are marketed" — and in many cases, a company doesn't even have to notify the FDA before selling one. Whether the bottle matches the label is, by default, the honor system.
That gap is exactly why independent testing exists — and why one pass isn't enough. Lundy is checked at two separate points. First, the raw creatine itself is independently lab-tested before it's ever packed into a tub: our most recent Certificate of Analysis came back at 99.83% pure creatine monohydrate (HPLC-tested, against a specification of >99.5%), with a full heavy-metal screen — arsenic, lead, cadmium, mercury, via ICP-MS — and a microbiological panel (aerobic plate count, coliform, yeast, mold, E. coli, salmonella, staph) all passing, well inside FDA and USP limits. Second, the finished product is manufactured in a facility holding a current, valid FDA Food Facility Registration and operating under cGMP (21 CFR Part 111) — the manufacturing controls the FDA can actually audit.
Why bother, when so few brands do? Independent testing keeps finding what self-reporting misses. A 2023–24 audit of 160 best-selling protein powders — a different product category, used here only to illustrate the industry-wide gap — found 47% exceeded federal or state heavy-metal safety thresholds. "Dietary supplement" is a labeling category, not a guarantee. Verification is what closes that gap — and it's why we keep our own Certificate of Analysis on file rather than asking you to take the label's word for it.
Purity of our creatine monohydrate, independently verified via HPLC against a >99.5% specification — plus a clean heavy-metal and microbiological screen.
Source: Certificate of Analysis, independent ISO/IEC 17025-accredited lab
Pre-market safety or accuracy testing the FDA performs on a typical supplement before it's sold.
Best-selling protein powders (unrelated category) that exceeded heavy-metal safety limits in independent lab testing — shown to illustrate why the industry-wide testing gap matters.
On the brain
What the research says — and doesn't, yet
The brain is one of the most energy-hungry tissues in the body, and it leans on the same phosphocreatine system that muscle does to keep regenerating ATP on demand. That's the mechanism researchers are now testing directly — and this is one of the fastest-moving corners of creatine research, so we're showing you both sides of it.
Signal found
A 2024 systematic review pooling 16 randomized controlled trials and 492 participants found creatine supplementation associated with meaningfully better memory (SMD 0.31, p<0.00001) and faster attention and processing speed. Effects were most consistent in adults under 60 and in people under some form of metabolic strain — which lines up with the energy-buffering mechanism.
"Some studies suggest creatine may help with memory and concentration under stress or sleep deprivation." — Yasi Ansari, RDN, UCLA Health
Not yet an approved claim
Here's the honest part: in late 2024, the EU's food safety authority (EFSA) reviewed ten human trials specifically to evaluate an official creatine-cognition health claim — and rejected it. Their finding wasn't that creatine "doesn't work," but that the ten studies "do not show a consistent effect" across cognitive domains, which falls short of the higher, uniform bar a formal claim requires. We'd rather tell you where the science is still catching up than round up. It's the same reason every line on our label says supports, never guarantees.
Standardized mean difference (SMD) improvement in memory performance across pooled trials — a moderate, statistically significant effect.
Human trials EFSA reviewed before concluding the evidence wasn't consistent enough to approve a formal cognitive-function health claim.
Source: EFSA Journal, 2024
Safety
Is it safe? What thirty years of data says
Creatine is one of the most heavily studied compounds in sports nutrition. The ISSN position stand reviewed short- and long-term supplementation — including doses up to 30g/day for 5 years — across populations from infants to the elderly, and found it safe and well tolerated in healthy individuals, with no clinically significant effect on kidney or liver markers in long-term athlete studies.
The kidney worry usually comes down to one mix-up: creatine supplementation can raise blood creatinine slightly, and creatinine is also the marker doctors use to screen for kidney damage. "People who take creatine may see a small rise in their blood creatinine levels," says UCLA Health dietitian Yasi Ansari, "but that does not necessarily mean their kidneys are being damaged." Her one caveat: if you have existing kidney disease, or take medication that affects kidney function, talk to your doctor before starting.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
Daily dose, sustained for 5 years, shown safe and well tolerated in healthy individuals in long-term research.
Sources
Read the research yourself
Read the label. Then read the research.
Shop lundyLundy is one ingredient: creatine monohydrate. 5g per serving, 60 servings, unflavored. Third-party tested at the raw-material and finished-batch stage, manufactured in a cGMP-registered, FDA-compliant facility.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.