Creatine Monohydrate | Supplement Guide
FORGED LINE COLLECTIVE | SUPPLEMENT GUIDE
The science behind strength, power, and performance.
Research reviewed: November 2026
The Bottom Line
Creatine monohydrate is one of the most extensively researched supplements in sports nutrition, with strong scientific support for improving repeated high-intensity exercise performance and supporting strength gains during resistance training.
By helping muscles replenish energy during demanding exercise, creatine can support greater training capacity. Over time, this may contribute to meaningful improvements in strength and muscular development.
It's not a stimulant, a steroid, or a replacement for proper training. It supports one of the body's fundamental energy systems, helping your muscles meet the demands of intense exercise.
What you should know:
- Best supported benefits: Strength, power, and repeated high-intensity exercise performance.
- Typical daily dose: 3–5 grams.
- Loading phase: Optional, not required.
- Timing: Daily consistency matters more than the time of day.
- Most researched form: Creatine monohydrate.
- Scientific evidence: Strong for specific exercise-performance outcomes; emerging for certain other applications.
Creatine isn't magic. But when it comes to supplements that can meaningfully support training, it has earned its reputation.
What Is Creatine?
Creatine is a naturally occurring compound synthesized primarily through processes involving the kidneys and liver. It is also obtained from foods such as meat and fish.
Approximately 95% of the body's creatine is stored in skeletal muscle, predominantly as free creatine and phosphocreatine.
Your body produces creatine, and dietary sources contribute additional amounts. Supplementation can increase muscle creatine stores beyond typical baseline levels.
Why Creatine Monohydrate?
Creatine monohydrate is the most widely studied supplemental form.
Other forms, including creatine hydrochloride, buffered creatine, and creatine ethyl ester, are sometimes marketed as having superior absorption or effectiveness.
However, available research has not convincingly demonstrated that these alternatives produce superior strength, muscle, or exercise-performance outcomes compared with creatine monohydrate.
For most people, creatine monohydrate is the practical starting point: it has the strongest research base and is usually good value. Independent testing, label accuracy, and convenience can help distinguish individual products.
How Creatine Works
To understand creatine, it helps to understand how your muscles produce energy.
Muscular contractions require adenosine triphosphate, commonly called ATP. ATP is the immediate energy currency your cells use to perform work.
During intense exercise, ATP is consumed rapidly.
One of the body's fastest ways to regenerate ATP is through the phosphocreatine system.
Phosphocreatine donates a phosphate group to adenosine diphosphate (ADP), helping regenerate ATP.
Supplementing with creatine increases the amount of creatine and phosphocreatine available within skeletal muscle.
What does that mean in the gym?
Imagine performing repeated sets of a demanding exercise.
Creatine may allow you to sustain slightly more high-intensity work, maintain performance across repeated efforts, or complete additional repetitions under certain conditions.
That extra capacity, repeated consistently over weeks and months, may contribute to greater improvements in strength and muscular development.
Creatine supports the work. It doesn't replace the work.
Research-Supported Benefits
1. Strength and Power
Evidence strength: Strong
This is one of creatine's most established applications.
Research consistently supports benefits for activities requiring short bursts of intense muscular effort, particularly when combined with structured training.
Potential improvements include:
- Maximal muscular strength.
- Repeated high-intensity exercise performance.
- Power-related outcomes.
- Total training work performed.
Not everyone responds equally, and the magnitude of improvement depends on training status, exercise selection, diet, and individual physiology.
Creatine should be viewed as an addition to progressive training, not a substitute for it.
2. Muscle Development
Evidence summary: Creatine supplementation can increase lean-body-mass gains when combined with resistance training. Research directly measuring muscle size also suggests an additional, generally small hypertrophy benefit.
Creatine supplementation can contribute to greater gains in lean mass during resistance-training programs.
However, an important distinction needs to be made.
Early increases in lean body mass are partly attributable to increased water within skeletal muscle. Lean body mass includes water and other nonfat tissues. Therefore, an increase in lean mass does not necessarily represent an equivalent increase in newly developed muscle tissue.
Over longer training periods, creatine may support muscular development indirectly by improving training capacity and adaptation.
Creatine doesn't directly replace the need for adequate protein, sufficient energy intake, and progressive resistance training.
When combined with progressive resistance training, creatine can support improvements in strength, training capacity, and muscular development. Its benefits are well supported, although the amount of additional muscle growth varies between individuals.
3. Endurance Performance
Evidence strength: Limited for sustained aerobic endurance
Creatine is not equally beneficial for every type of exercise.
Its strongest applications involve repeated, high-intensity efforts rather than continuous, steady-state endurance activity.
For prolonged aerobic exercise, such as distance running, the benefits are less consistent.
In some endurance sports, additional body mass associated with creatine supplementation may even be undesirable.
This doesn't mean endurance athletes can never benefit, but their sport's specific demands matter.
Strength, Muscle Development, and Healthy Aging
Creatine may also be useful beyond traditional athletic populations.
Maintaining muscular strength becomes increasingly important with age, particularly for supporting physical independence and functional capacity.
A 2026 systematic review and meta-analysis examined creatine supplementation combined with resistance training in adults aged 60 and older.
Across 11 randomized controlled trials, the researchers found a modest additional improvement in muscular strength compared with resistance training alone.
However, additional benefits for muscle mass and physical function were not statistically established in that analysis.
The findings are encouraging, but they should not automatically be extended to frail or medically complex older adults.
Practical takeaway: Creatine may complement resistance training for some older adults, but exercise remains the foundation for preserving strength and physical capability.
Creatine and Cognitive Function
Evidence strength: Emerging and inconsistent
Creatine's role in cellular energy metabolism extends beyond skeletal muscle.
The brain also requires substantial amounts of ATP, creating scientific interest in creatine's potential influence on cognitive performance.
A 2024 systematic review and meta-analysis by Xu and colleagues examined 16 randomized controlled trials investigating creatine supplementation and cognitive performance.
The review reported encouraging improvements in memory and certain timed measures of attention and information-processing speed. However, a 2025 published correction clarified the reporting of selected cognitive measures, and a 2026 methodological commentary raised concerns about how related test results were combined.
These developments do not establish that creatine lacks cognitive benefits. They indicate that the size and reliability of the reported effects require further investigation.
However, the analysis did not demonstrate significant improvements in overall cognitive function or executive function.
The studies also varied in their populations, supplementation protocols, and assessment methods.
More research is needed to determine who might benefit, under what circumstances, and whether observed effects are clinically meaningful.
What this does not mean: Creatine is not an established treatment for dementia, traumatic brain injury, or other neurological conditions.
Its cognitive applications remain an active area of research, not a settled clinical recommendation.
Evidence-Based Dosing and Timing
One of creatine's advantages is its simplicity.
You generally don't need a complicated supplementation schedule.
Option 1: Daily Maintenance
Typical dose: 3–5 grams daily
Taking 3–5 grams daily is a commonly studied approach for generally healthy adults and, for many, the simplest option.
Consistent daily supplementation gradually increases muscle creatine stores, generally over approximately three to four weeks.
There is no requirement to complete a loading phase first.
Option 2: Loading Phase
A commonly researched loading protocol is:
- 20 grams daily.
- Divided into four 5-gram servings.
- Continued for approximately 5–7 days.
- Followed by 3–5 grams daily for maintenance.
Some studies use body-weight-based loading of approximately 0.3 g/kg/day (approximately 0.136 g/lb/day).
Loading is optional. It increases muscle creatine stores more rapidly, but it is not necessary for obtaining longer-term benefits.
Higher doses may also increase the likelihood of gastrointestinal discomfort.
When Should You Take Creatine?
Morning, afternoon, before training, or after training?
For most people, the specific time of day is less important than consistently taking an appropriate daily amount.
Research has not established a compelling advantage for pre-workout versus post-workout supplementation.
Choose a time that makes daily use convenient.
Should You Take It on Rest Days?
Yes.
Creatine supplementation works primarily by increasing and maintaining tissue creatine stores, not by producing an immediate stimulant effect.
Taking it consistently on both training and rest days helps maintain those stores.
Do You Need to Cycle Creatine?
Routine cycling is not supported as necessary by current evidence.
There is no established requirement to periodically stop taking creatine simply because you've used it for several weeks or months.
Safety, Side Effects, and Considerations
Creatine monohydrate has been extensively studied and generally demonstrates a favorable safety profile in healthy adults using conventional doses.
However, no supplement is appropriate for every individual.
Kidney Health
This is one of the most common concerns surrounding creatine.
Creatine monohydrate has a generally favorable safety profile in healthy adults using established doses. Importantly, creatine supplementation can increase blood creatinine concentrations without necessarily indicating kidney damage.
Creatinine is commonly used to estimate kidney function. Because creatine supplementation can influence this marker, creatinine-based estimated glomerular filtration rate (eGFR) results may require additional clinical context.
An abnormal kidney test should never automatically be dismissed as an effect of creatine.
Two systematic reviews published in 2026 found increased serum creatinine without clear evidence of kidney injury across other measured outcomes. One review also highlighted that conclusions can differ depending on how kidney function is assessed.
These findings are reassuring for conventional supplementation in generally healthy adults, although research involving people with existing kidney disease remains more limited.
People with kidney disease, abnormal kidney test results, or medications that may affect kidney function should seek individualized medical guidance before supplementation.
Anyone using creatine should also inform their healthcare professional when undergoing kidney function testing.
Water Retention and Weight Gain
Creatine frequently increases water stored within muscle.
Some individuals notice an initial increase in body weight, particularly during loading.
This is not equivalent to increased body fat.
Changes in water balance are part of the physiological response to increased muscle creatine stores.
Dehydration and Muscle Cramping
Contrary to common claims, controlled research has not consistently demonstrated that creatine supplementation increases dehydration or muscle cramping.
However, creatine does not eliminate the need for adequate hydration.
Fluid and electrolyte needs should still reflect exercise intensity, duration, environmental conditions, and individual sweat losses.
Gastrointestinal Discomfort
Some users experience bloating, nausea, or diarrhea.
These effects may be more likely with large single doses.
Smaller divided doses and avoiding unnecessary high-dose supplementation may improve tolerance.
Special Populations
Human evidence is insufficient to establish the safety of routine creatine supplementation during pregnancy or breastfeeding. People with significant medical conditions or medications affecting kidney function should seek individualized professional guidance.
Common Myths and Misconceptions
Myth: Creatine is a steroid.
False.
Creatine is not an anabolic steroid or hormone. It supports cellular energy metabolism through the creatine-phosphocreatine system.
Myth: Creatine makes you gain body fat.
Not supported.
Creatine may increase total body weight, particularly through changes in muscle water content. That should not be confused with fat accumulation.
Myth: Creatine causes hair loss.
What the research shows: Current scientific evidence does not establish that creatine supplementation causes hair loss.
Concerns originally emerged from a small study reporting changes in dihydrotestosterone (DHT), a hormone involved in androgen-related hair loss. However, that study did not directly measure hair loss.
More importantly, a 2025 randomized controlled trial investigated this question directly.
Researchers compared 5 grams of creatine monohydrate daily with placebo over 12 weeks in young resistance-trained men.
Among 38 participants who completed the study, researchers found no significant differences between groups in hair-related outcomes or DHT concentrations.
These findings provide reassuring evidence against the popular claim that creatine causes hair loss.
The study was relatively small and short, so it cannot establish every possible long-term outcome.
Practical takeaway: Available human research does not demonstrate that conventional creatine supplementation causes hair loss.
Myth: Creatine damages healthy kidneys.
Not supported at commonly studied doses in healthy adults.
Research generally has not demonstrated kidney injury in healthy adults using conventional creatine supplementation protocols.
However, people with existing kidney disease require individualized assessment, and creatine can complicate interpretation of creatinine-based tests.
Myth: You need to cycle creatine.
Not supported.
Routine cycling has not been established as necessary for maintaining effectiveness or safety in healthy adults.
Myth: Creatine must be taken before a workout.
False.
Creatine is not an acute stimulant. Consistent supplementation is more important than precise workout timing.
Myth: More creatine always produces better results.
False.
Once muscle creatine stores are sufficiently elevated, taking substantially larger doses does not necessarily produce greater exercise benefits.
More is not automatically better.
Frequently Asked Questions
Can women benefit from creatine?
Yes. Creatine is not a male-specific supplement.
Women participating in resistance training or repeated high-intensity exercise may benefit, although individual responses and study findings vary.
Is creatine useful if I'm just starting to exercise?
Potentially. However, establishing consistent training, appropriate exercise technique, adequate nutrition, and recovery should remain the priorities.
Can I take creatine with protein powder?
Yes. Creatine and protein serve different physiological roles.
Protein provides amino acids needed for tissue maintenance and repair. Creatine supports cellular energy availability during high-intensity exercise.
One does not replace the other.
Should I mix creatine with water or another beverage?
Creatine monohydrate can be mixed with water or another suitable beverage, following the product's label instructions.
Will I lose all my strength if I stop taking creatine?
No.
Muscle creatine stores gradually return toward baseline after supplementation stops. Some creatine-associated changes in body water and exercise capacity may diminish, but training adaptations do not simply disappear because supplementation ends.
Is creatine effective without exercise?
Creatine can increase tissue creatine stores without training, but the strongest evidence for improvements in muscle strength and training-related adaptations comes from its use alongside exercise.
Is creatine safe to take long term?
Research on established creatine supplementation regimens is generally reassuring for healthy adults, including studies extending beyond short training periods.
Conventional supplementation has a favorable safety profile, making creatine one of the better-studied options in sports nutrition.
However, evidence from healthy adults does not establish safety for every medical condition, dose, or lifetime pattern of use. Individual circumstances and medications should inform ongoing supplementation.
Scientific References
The following sources provide the scientific foundation for this guide.
1. NIH Office of Dietary Supplements
Dietary Supplements for Exercise and Athletic Performance: Health Professional Fact Sheet.
Comprehensive evidence overview covering creatine's performance effects, dosing, and safety.
https://ods.od.nih.gov/factsheets/ExerciseAndAthleticPerformance-HealthProfessional/
2. Antonio J, et al. (2025)
Part II. Common questions and misconceptions about creatine supplementation: What does the scientific evidence really show?
Journal of the International Society of Sports Nutrition.
Addresses common misconceptions, practical use, timing, health considerations, and emerging applications.
https://doi.org/10.1080/15502783.2024.2441760
3. Yao L, Yang D, Gao J. (2026)
Effects of resistance training combined with creatine supplementation on muscle strength, physical function, and muscle mass in older adults: A systematic review and three-level meta-analysis.
Frontiers in Nutrition.
Examines creatine combined with resistance training in older adults.
https://doi.org/10.3389/fnut.2026.1919884
4. Xu C, Bi S, Zhang W, Luo L. (2024)
The effects of creatine supplementation on cognitive function in adults: a systematic review and meta-analysis.
Frontiers in Nutrition.
https://doi.org/10.3389/fnut.2024.1424972
Published correction (2025):
https://doi.org/10.3389/fnut.2025.1570800
Methodological commentary (2026):
https://doi.org/10.3389/fnut.2026.1716285
The correction clarified the reporting of certain cognitive measures, while the commentary questioned how related test results were pooled. Neither constitutes a retraction.
5. Artur de Souza Almeida, et al. (2026)
Impact of creatine supplementation on kidney health: a systematic review and meta-analysis.
International Urology and Nephrology.
Examines serum creatinine changes and other kidney function measures.
https://doi.org/10.1007/s11255-026-05287-x
6. Tsiaras A, et al. (2026)
The Effect of Creatine Supplementation on Kidney Function: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
Journal of Renal Nutrition.
Examines kidney function outcomes across randomized controlled trials.
https://doi.org/10.1053/j.jrn.2026.04.010
7. Lak M, et al. (2025)
Does creatine cause hair loss? A 12-week randomized controlled trial.
Journal of the International Society of Sports Nutrition.
https://doi.org/10.1080/15502783.2025.2495229
Research reviewed: November 2026. This guide draws on peer-reviewed research and authoritative nutrition resources. Scientific findings are interpreted according to the populations and outcomes studied; research is reviewed as new evidence becomes available.
Featured Products
Thorne Creatine
Creatine Monohydrate | 90 Servings
Thorne Creatine provides a straightforward approach to creatine supplementation using the most extensively researched form.
Forged Line Collective is a supplement retailer and may offer products featured in our educational guides. We prioritize transparent ingredient amounts, relevant quality testing, practical use, and products selected for a clear purpose.
Product Highlights
- 5 grams of creatine monohydrate per serving.
- 90 servings per container.
- Unflavored powder.
- NSF Certified for Sport.
NSF Certified for Sport is a third-party certification program that evaluates participating products against specified standards, including testing for certain substances prohibited in sport.
Certification does not establish that a supplement produces a particular performance benefit.
Availability: Coming Soon
Forged Line Collective is preparing its supplement and performance nutrition offering. Product availability will be announced once our retail arrangements are finalized.
Manufacturer information:
https://www.thorne.com/products/dp/creatine
Certification information:
https://www.nsfsport.com/certified-products/listing-detail.php?id=1495542
The FLC Perspective
Supplements should support a solid foundation, not replace one.
Creatine monohydrate has earned its place through decades of research demonstrating meaningful benefits for specific performance outcomes.
But the fundamentals still matter more: consistent training, sufficient nutrition, appropriate recovery, and realistic expectations.
Understand what you're taking. Know what the research supports. Choose products with purpose.
Built for More.
Educational information only. This guide is not individualized medical advice and does not present creatine as a treatment for any medical condition. Supplement decisions should consider personal health circumstances and the current manufacturer's label.