Designs for Health · 30 Stick · $26.99
Creatine is known for promoting skeletal muscle growth and athletic performance when combined with resistance training.* Creatine also offers additional benefits, including supporting healthy aging, cognitive function, and women’s health, while bridging nutritional gaps common in plant-based diets.*
Designs for Health Creatine Monohydrate Powder utilizes micronized technology, allowing for improved absorption and digestibility and enhanced bioavailability to targeted muscle tissue.
Each scoop or single-serving stick pack provides 5 g of micronized creatine in a convenient, unflavored, and unsweetened powder that rapidly dissolves in liquid. This product is available in 1 lb or 2 lb containers, or in travel-friendly single-serving stick packs.
Suggested Use / Directions: Mix 1 stick pack (5g) in 16oz of water per day or as directed by your health-care practitioner.
Serving Size: 1 Stick Pack (5g)
Amount Per Serving
Creatine Monohydrate ... 5g
Other Ingredients: None
Creatine monohydrate is a crystalline powder form of creatine, a compound the body makes from amino acids and stores mostly in skeletal muscle, where it helps recycle energy during short, hard efforts. It is the standard form in sports nutrition, and it can raise serum creatinine on a blood test without indicating kidney damage.
The sections below cover what creatine does in the body, the forms you will see on a label, what it does and does not do in training adults, the interactions worth raising with a pharmacist, and the lab quirk that matters most. Amounts and timing are not covered here. Those belong to the product label and to a clinician who knows your health history.
Creatine is a nitrogen-containing compound built from the amino acids glycine, arginine and methionine, stored mainly in skeletal muscle in its phosphorylated form, phosphocreatine.
Muscle runs on adenosine triphosphate, or ATP, and the supply inside a working muscle fibre is small. During brief maximal efforts, a heavy set, a sprint, a jump, phosphocreatine donates a phosphate group to regenerate ATP quickly. That system is what carries the first several seconds of all-out work, before glycolysis and then aerobic metabolism take over. Larger muscle phosphocreatine stores mean the fast system can be reloaded more completely between efforts.
The body makes some creatine itself, largely in the liver, kidneys and pancreas, and the rest comes from food. Red meat and fish are the main dietary sources, which is why people who eat little or no animal protein tend to start with lower muscle creatine stores than omnivores.
Creatine and phosphocreatine break down at a fairly steady daily rate into creatinine, a waste product that the kidneys filter out of the blood and excrete in urine. That last detail is the reason a supplement aimed at muscle ends up showing on a kidney panel, and it is covered in its own section further down.
Monohydrate is the form used in most published creatine trials, which means the safety and performance literature largely describes that specific molecule rather than the newer variants sold alongside it 1. Reviews of the field describe creatine monohydrate as the form with the largest supporting evidence base, and note that alternative forms have not been shown to be superior to it 1.
Creatine monohydrate is simply creatine bound to one water molecule. Micronized monohydrate is the same compound milled to a smaller particle size, which changes how it disperses in liquid rather than what it is.
| Form | What it is | What the published research base looks like |
|---|---|---|
| Creatine monohydrate | Creatine bound to one water molecule, sold as powder or capsules | The form this product contains |
| Micronized creatine monohydrate | The same molecule, milled finer for dispersion | Same compound, so monohydrate findings broadly apply |
| Buffered creatine | Monohydrate combined with an alkaline agent | Limited human data; not shown to outperform monohydrate |
| Creatine ethyl ester | An esterified form marketed for absorption | Limited human data; not shown to outperform monohydrate |
None of this makes monohydrate the right choice for any particular person. It means the alternatives are not established as better than it, which is a different claim.
The best understood effects of creatine are on muscle performance and body composition in healthy training adults, not disease outcomes. Research suggests that creatine supplementation combined with resistance training is associated with greater increases in muscle strength and lean mass than resistance training alone 1. The mechanism proposed is more complete phosphocreatine resynthesis between hard efforts, which allows slightly more total work per session, accumulating over weeks of training.
Some of the measured increase in body weight in the early phase reflects water held within muscle cells rather than new contractile tissue, a point the review literature makes directly 1.
Beyond the gym, the research field has widened 2. A recent review of common questions in this area discusses evidence for creatine in contexts beyond skeletal muscle performance, including brain creatine content and cognitive and clinical applications, while noting that these areas are less settled than the exercise findings 2. That is the honest framing. Muscle outcomes in training adults are the most studied endpoint; everything else sits behind it.
Ageing and clinical groups are a separate thread. A 2025 review examining creatine monohydrate in older adults and clinical populations suggests that supplementation may help support measures of muscle mass and function in these groups, particularly when paired with exercise, while calling for more and longer trials 3. The repeated caveat across this literature is that creatine is an adjunct to training and adequate protein intake, not a replacement for either.
Creatine has not been shown to treat or prevent any disease, and nothing on this page should be read as suggesting it does. It is a dietary supplement, not a treatment for any disease.
A few other limits are worth stating plainly. Creatine is not a fat-loss agent, and the early weight change associated with it usually moves in the opposite direction because of intracellular water. It is not a hormone and it is not an anabolic steroid, despite the two being grouped together in casual conversation. It does not substitute for sleep, calories, protein or a progressive training stimulus, and the benefit people see almost always comes alongside structured exercise.
Response also varies. People who already carry high muscle creatine stores, often those eating plenty of meat and fish, tend to have less room to increase them, so the measurable effect differs between individuals.
Finally, long-term data are stronger in healthy adults than in every population that now takes it. In adolescents, in pregnancy, and in people with existing organ disease, safety is not established, which is different from saying it is fine.
Yes, creatine supplementation can raise serum creatinine, and because estimated glomerular filtration rate is calculated from creatinine, a higher creatinine will make eGFR read lower. That is a measurement effect, not a sign of kidney injury.
The reason is mechanical. Supplementing raises the total creatine pool in muscle, and a fixed proportion of that pool converts to creatinine each day. More substrate in, more waste product in the blood, with filtration working exactly as before. The same thing happens, to varying degrees, with high muscle mass, a large meat intake, or a very hard training session shortly before the blood draw.
| Marker | Typical lab reference range | Units |
|---|---|---|
| Serum creatinine, adult men | roughly 0.6 to 1.3 | mg/dL |
| Serum creatinine, adult women | roughly 0.57 to 1.0 | mg/dL |
| eGFR | commonly reported as normal at 60 and above | mL/min/1.73 m² |
These are typical lab reference ranges and they vary by laboratory, assay, age, sex and muscle mass. Your own report's range is the one that applies.
The research on actual kidney function is reassuring but specific 4 5. A systematic review and meta-analysis of creatine supplementation and renal function found no significant effect on markers of kidney function in the trials examined, which were conducted largely in people without kidney disease 4. A more recent systematic review and meta-analysis reached a broadly similar conclusion, reporting that the available evidence suggests creatine supplementation does not impair kidney function in healthy individuals 5. Neither finding extends to people who already have kidney disease, because those people were largely not in the trials 4 5.
The practical consequence is a conversation, not an avoidance. Tell the clinician ordering a kidney test that you supplement creatine, and say so before the draw rather than after an unexpected number arrives. A clinician who knows about it can interpret the creatinine in context, or use a marker such as cystatin C, which is not produced by muscle, if they want a check that is less influenced by it.
If you want to see where this sits on your own bloodwork, Creatinine is the marker to look at, and it is one of the markers included in FitScript's annual testing. A single reading outside the standard range is an observation, not a diagnosis. It may reflect supplementation, muscle mass, hydration status or recent exercise, and it is worth discussing with a clinician alongside the rest of the panel rather than interpreted alone. A result your clinician flags as needing attention is worth discussing with them promptly.
The interactions worth raising are with caffeine, with anything that affects hydration or kidney handling, and with the interpretation of lab tests rather than with the body itself.
Caffeine has been examined directly. A review of concurrent creatine and caffeine use discusses the possibility that high-dose caffeine may blunt some of creatine's ergogenic effect, while noting that the evidence is mixed and that habitual caffeine intake does not clearly negate the benefit 6. Nothing in that literature supports giving up coffee, and the practical answer for most people is that it is a question to raise rather than a rule to follow.
Medications that affect kidney filtration or fluid balance, including drugs described by a prescriber as hard on the kidneys, are the other category to flag. This is not a reason to change anything you have been prescribed, and no one should stop or alter a prescribed medication based on a web page. It is a reason to show your full supplement list to the prescribing clinician or a pharmacist, who can tell you whether anything on it warrants a different monitoring plan.
One more interaction is informational. Creatine can shift how a creatinine-based kidney estimate reads, as described above, so it belongs on your medication and supplement list at every appointment, not just the ones about training.
The most consistently reported effects are weight gain from water retention and gastrointestinal discomfort, and the published safety literature has not identified consistent serious harms in healthy adults.
An early and widely cited review of adverse effects examined the claims circulating about creatine, including muscle cramping, dehydration and kidney and liver injury, and concluded that the available evidence did not support them as established consequences of supplementation in healthy people 7. More recent reviews of common misconceptions reach similar conclusions about cramping and dehydration specifically, while noting that gastrointestinal upset does occur in some people 1.
What that means in practice. Water weight is real and it is intracellular, which is why the scale can move in the first weeks without a change in body fat. Stomach discomfort, bloating or loose stools are the most common complaints, and they are often related to how much is taken at once, which is a label and clinician question rather than something to self-adjust from an article.
Supplement quality is its own variable. Creatine is not reviewed for safety and effectiveness the way a prescription medicine is, so third-party testing for identity and contaminants is a reasonable thing to look for on any product you consider.
Anyone with existing kidney disease, reduced kidney function, or a single kidney should ask a clinician before using creatine, because creatine's safety for the kidneys is established mainly in people without kidney disease.
The same applies if you are pregnant or breastfeeding, if you are under 18, if you take multiple prescription medications, if you have liver disease or a condition affecting fluid balance, or if you have a kidney test, an insurance medical or a pre-surgical workup coming up. In that last case the point is timing and disclosure, not avoidance.
Amounts, timing, whether to use a loading approach and whether to take it alongside anything else are all outside the scope of an ingredient explainer. Follow the product label, and let a clinician who can see your history and your bloodwork decide what is appropriate for you. This page is educational and is not medical advice. Discuss your results, your supplements and any treatment decision with a clinician or licensed provider before acting on them.
If you do start, baseline bloodwork taken before the first serving makes later readings far easier to interpret, because you and your clinician can see where creatinine sat when nothing was supplementing the pool.
For the lab side of this topic, the Creatinine marker page explains what the test measures, what moves it, and how it feeds into an eGFR calculation. FitScript members have 150+ biomarkers tested per year, with results interpreted by Atlas, the AI health advisor, and reviewed in the context of what a member is actually taking.
In healthy adults, creatine is not known to impair kidney function, though this is not established for people with existing kidney disease. Creatine can still raise serum creatinine, which is a measurement effect rather than injury. Anyone with reduced kidney function should ask a clinician before using it.
Creatine and phosphocreatine break down into creatinine at a steady daily rate, so a larger muscle creatine pool produces more creatinine in the blood even when filtration is unchanged. Because eGFR is calculated from creatinine, the estimate can read lower too. Mention your supplement use before a kidney test so the result is interpreted in context.
That is a decision for the clinician ordering the test, not something to decide from an article. The more useful step is disclosure. Tell them you supplement creatine before the draw, and they can account for it, repeat the test later, or choose a marker such as cystatin C that is not produced by muscle.
This page does not rank products. Alternative forms are not established as superior to monohydrate. That is a statement about how well each form is understood, not about which product suits any individual.
Weight gain from intracellular water retention and gastrointestinal discomfort such as bloating or loose stools are the most commonly reported. Review articles examining claims about cramping, dehydration and organ damage concluded the evidence did not support them as established effects in healthy adults. Report anything persistent to a clinician.
Amounts, timing and whether to use any loading approach are for the product label and for a clinician who knows your health history and current medications. An ingredient explainer cannot set that for you, and self-adjusting based on general information is not a good idea, particularly if you take other medicines.
High-dose caffeine may blunt some of creatine's ergogenic effect, though this is not settled, and habitual caffeine intake does not clearly negate the benefit. It is a reasonable question to raise with a clinician rather than a reason to change your coffee habit.
Creatine is best understood as an adjunct to structured resistance training rather than a substitute for it. Reviews in older adults and clinical populations similarly emphasise combining supplementation with exercise.
People who eat little or no meat or fish often start with lower muscle creatine stores, since diet is a meaningful source alongside what the body makes itself. That can mean more room to raise stores, though individual response varies.