By Emily ParkerUpdated November 2026
The pros and cons of creatine come down to a simple trade-off. Creatine monohydrate is one of the most studied sports supplements, with consistent evidence for small gains in strength and lean mass during resistance training. Its downsides are mostly modest: some weight gain from water held in muscle, occasional digestive upset at high doses, and a need for consistent daily use. For most adults who lift regularly and want a well-supported supplement, creatine is a reasonable choice. For people with kidney disease, those on certain medications, or anyone who dislikes the idea of a few pounds of water weight, it deserves more caution or may not fit at all.
| Criterion | Creatine Monohydrate (Standard Form) | No Creatine Supplementation |
|---|---|---|
| Strength gains with resistance training | Modest, well-documented improvements in many trials | Gains still possible, but typically slower |
| Lean mass during training | Small added gains in several meta-analyses | Baseline progress only |
| Body weight | Often rises 1–2 kg in the first week from intracellular water | Stable, based on diet and training |
| Digestive side effects | Possible at high single doses (diarrhea, cramping) | None from this source |
| Research base | Extensive, with decades of trials | Not applicable |
| Daily routine required | Yes, about 3–5 g per day | No |
| Best suited for | Resistance-trained adults seeking performance gains | Those who avoid supplements or lift casually |
Performance and Strength: Creatine Wins
Creatine helps regenerate phosphocreatine, which supports short bursts of high-intensity effort. A review by Kreider and colleagues published in the Journal of the International Society of Sports Nutrition (2017) summarized a large body of trials showing improved performance in repeated sprints, jumping, and maximal lifts. Gains in one-repetition maximum tend to fall in the range of a few percent over several weeks when compared with placebo.
Those gains are real but not dramatic. Someone who already trains hard and eats well may notice the difference more on the final few reps of a set than in the overall program. Still, when the goal is measurable strength or power, creatine has one of the stronger records among legal supplements. Winner: creatine.
Muscle Growth: Creatine Wins, With Caveats
Several meta-analyses have found that creatine combined with resistance training produces slightly greater increases in lean body mass than training alone. Part of the early mass increase is water inside muscle cells, which is not the same as new contractile tissue. Longer trials show a smaller additional effect that likely reflects more training volume, since creatine lets people lift a bit harder for longer.
Timing does not appear to matter as much as consistency. Whether you take it before or after training, the total daily amount is what counts. If you want more detail on timing, see When Is Creatine Best Taken? Timing Evidence for Muscle Gains and Creatine Post or Pre Workout: What the Evidence Says and How to Time It. Winner: creatine, for lifters who train consistently.
Side Effects and Safety: No Clear Winner, Depends on the Person
The most common complaints are weight gain from water, stomach discomfort when a large dose is taken at once, and cramping. Splitting a daily dose of 3–5 grams into smaller servings usually reduces these problems. Manufacturers and most sports nutrition guidance describe a loading phase of about 20 grams per day for five to seven days, but many people skip loading and simply take 3–5 grams daily, which reaches the same muscle saturation over about three to four weeks.
Concerns about kidney function have been raised for years. Current reviews have not found evidence that healthy people with normal kidney function are harmed at standard doses, but people with existing kidney disease should speak with a physician before starting. Creatine can also raise serum creatinine, which can affect how lab results are read, so mention your supplement use before any blood work. Hair loss has been discussed in the media; for a closer look at that question, see Will Creatine Cause Hair Loss? What the Research Says. Consult a healthcare professional if you have a medical condition or take prescription medication.
Because the answer depends on health status, this category is closer to a tie. Winner: creatine for healthy adults; no winner for those with kidney or medication concerns.
Practicality and Convenience: Creatine Wins
Creatine monohydrate is one of the easiest supplements to use. It mixes into water, protein shakes, or juice with little taste, and it does not need to be taken with food. Micronized forms dissolve more readily and can be easier on the stomach for some users. If you are deciding between formats, Creatine Pills vs Powder: Which Works Better and Why? covers the trade-offs in detail.
Creatine can be combined with other products. Some lifters mix it into a shake, as described in Creatine with Protein Shake: Does It Work and How to Mix It. Others use a pre-workout blend, though those products often contain caffeine and other ingredients you may not need. Read the label carefully and see Pre Workout Powder with Creatine: Does It Work and Is It Right for You? for guidance. Winner: creatine.
Which Should You Choose?
- Choose creatine if you do regular resistance or high-intensity training, want evidence-backed gains in strength and lean mass, and are a healthy adult with normal kidney function.
- Skip or delay creatine if you have kidney disease, take medications that affect kidney function, or are unwilling to accept a small amount of water-related weight gain.
- Consider a gummy or alternative format if you dislike powder. Products like the Force Factor Creatine Gummies offer a different texture, though you should check the actual creatine dose per serving, which is often lower than a standard powder scoop. See Force Factor Creatine Gummies: A Guide to Dosing, Use, and What to Know for details.
- Consider a monohydrate powder if you want the most researched form at a straightforward dose. A common option is the Optimum Nutrition Micronized Creatine Monohydrate Powder, which is widely sold and mixes easily.
- Consider a micronized powder if standard monohydrate causes stomach upset. You can compare the two forms in Micronized Creatine vs Monohydrate Creatine: Which Is Better?.
Product options by type:
FAQ
Does creatine cause weight gain?
Yes, usually a small amount. Creatine draws water into muscle cells, so many people gain 1–2 kilograms early on. This is generally not fat gain. The increase tends to stabilize after the first few weeks.
How much creatine should I take each day?
A common maintenance dose is 3–5 grams per day. Many people choose this simpler approach rather than loading. Check the product label and consult a professional if you have questions about your specific situation.
Is creatine safe for people with kidney problems?
People with existing kidney disease should talk with a doctor before using creatine, because it can affect creatinine levels and kidney function monitoring. Healthy adults with normal kidney function have not shown harm in most research at standard doses.
Do I need to cycle creatine?
Current evidence does not show that cycling is necessary for healthy users. Many people take it continuously. Stopping typically means muscle creatine stores decline gradually over several weeks.
Can women use creatine?
Yes. Research on women shows similar strength and lean-mass benefits from resistance training combined with creatine. For more on this topic, see Effects of Creatine on Females: What the Research Shows and How to Use It.
Conclusion
The pros and cons of creatine favor it for most healthy, resistance-trained adults. The benefits in strength and lean mass are supported by a large research base, and the main drawbacks, mild water weight gain and occasional digestive upset, are manageable. People with kidney disease or other medical concerns should speak with a healthcare professional before starting, and anyone who prefers to avoid supplements can build strength effectively through training and nutrition alone.
About Emily Parker
Emily Parker is part of our editorial team and reviews and edits our fitness science explainers guides, checking product details against manufacturer specifications and owner feedback.
