Is creatine safe? Sorting the research from the rumors
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Creatine is the most researched supplement in existence. Hundreds of human studies over more than 30 years. And "is creatine safe" still gets typed into Google half a million times a month.
That gap between the evidence and the fear is worth talking about. I take creatine every day, I sell it, and I'd still tell you to read this skeptically. Check anything I say here against the actual research. It holds up.
What creatine actually does
Your body makes creatine on its own, and you eat some in meat and fish. Your muscles store it as phosphocreatine and use it to rapidly regenerate ATP, the energy currency for short, hard efforts.
Supplementing tops off those stores beyond what diet alone usually gets you. The result, shown consistently across decades of studies: a modest but real improvement in high-intensity performance, better training output over time, and more lean mass gained when it's paired with lifting.
Modest is the honest word. Creatine helps you do slightly more work, more often. Compounded over months of training, that matters. Overnight, it does nothing you'll notice.
Is creatine safe for your kidneys?
This is the big fear, and it comes from a misunderstanding of a blood marker.
Creatine breaks down into creatinine. Doctors use creatinine levels to screen kidney function, because failing kidneys clear less of it. So when someone supplements creatine and their creatinine reads a bit high, it can look like a kidney problem on paper. It's the supplement raising the marker, and studies in healthy people consistently show normal kidney function underneath.
Long-term studies in healthy adults, some running years at standard doses, keep coming back clean. Every major sports nutrition body that has reviewed the evidence considers creatine safe for healthy people at recommended doses.
The honest caveat: if you have existing kidney disease, or any medical condition you manage with a doctor, ask that doctor first. That's true for any supplement, and I'm not going to pretend otherwise to close a sale.
Does creatine cause hair loss?
Here's the entire evidence base for this one: a single 2009 study of college rugby players found that a creatine loading protocol raised DHT, a hormone linked to male pattern baldness. The study measured hormone levels. It never measured hair.
No study since has replicated that finding. No study has ever shown creatine users actually losing hair. Reviews of the broader hormone data don't show a consistent effect.
So the rumor rests on one unreplicated study about a marker, stretched into a claim about an outcome it never tested. I can't tell you the risk is exactly zero, because science doesn't hand out those guarantees. I can tell you that after 3 decades of widespread use, the evidence for it just isn't there.
Does creatine cause bloating?
Creatine pulls water into your muscle cells. That's part of how it works, and it can add a pound or 2 on the scale in the first weeks, especially if you run a loading phase of 20 grams a day.
Water inside the muscle isn't the puffy, under-the-skin bloat people picture. Most users don't report any bloated feeling at all, and skipping the loading phase makes the water shift more gradual anyway.
If the scale bump bothers you, know what it is: water in the muscle, doing its job. It's a sign the stuff is being stored.
How to take creatine
This part is almost boring, which is how you know it's real.
- 5-10 grams of creatine monohydrate, every day. That's the dose the bulk of the research used.
- Timing doesn't meaningfully matter. Morning, pre-workout, with dinner. Pick whatever you'll remember.
- Consistency is the whole game. It works by keeping your muscles saturated, which takes daily use over weeks. A scoop taken sporadically does close to nothing.
- No cycling required. There's no evidence you need to take breaks.
No pixie dust, no proprietary matrix, no "advanced delivery system." Monohydrate is the form used in nearly all the research, and it's cheap. Anyone charging you triple for a fancier form is charging you for the story.
Where Hollow Labs lands on this
I've taken creatine daily for years. I'm in recovery, sober since 2013, and the gym is a load-bearing part of how I stay that way. My rule for everything I put in my body, and everything I put a label on, is the same: boring, proven, fully disclosed.
Hollow Labs Creatine Monohydrate is exactly that. One ingredient, 5 grams per serving, the full dose printed on the label because there's nothing to hide.
And if you buy your creatine somewhere else, honestly, fine. Just make sure it's monohydrate, make sure the dose is on the label, and take it every day.
