By Dr David LaMond, Medical Director Blue Sky MD
Creatine has been one of the most studied supplements in sports nutrition for decades. For a long time, the message was simple: take 3–5 grams per day.
For muscle, strength, power, and performance, this advice still works well.
But creatine is no longer being discussed only as a gym supplement. We now use creatine in broader conversations about aging, muscle preservation, weight loss, GLP-1 therapy, bone health, brain energy, fatigue, and high-performance sport.
This is where the old 5-gram rule becomes a little too simple.
The better question is not, “How much creatine should everyone take?” The better question is, “What tissue are we trying to support?”
What does creatine do?
Creatine helps your cells recycle ATP, the body’s fast energy currency.
Think of ATP as the immediate-use battery inside muscle and brain cells. During short bursts of effort, such as lifting, sprinting, climbing stairs, or repeated high-intensity work, your body relies heavily on the creatine-phosphocreatine system to rapidly restore energy.
This is why creatine has such strong data for strength, power, training output, and lean mass support. The International Society of Sports Nutrition has described creatine monohydrate as one of the most effective nutritional supplements available for improving high-intensity exercise capacity and lean body mass. (Springer)
The standard dose: 3–5 grams daily
For most people using creatine to support muscle, 3–5 grams per day of creatine monohydrate is a reasonable starting point.
This dose works because skeletal muscle stores most of the body’s creatine. With consistent use, muscle creatine stores gradually fill. A loading phase is not required for most patients. Taking it daily matters more than timing it perfectly.
This dose is most appropriate for:
- Adults beginning resistance training
- Patients trying to preserve muscle during weight loss
- Patients using GLP-1 medications
- Recreational athletes
- Adults looking for simple muscle and strength support
- Older adults trying to reduce age-related muscle loss
Why some people may need more
The newer science suggests one dose may not fit every goal.
A 2024 review asked this exact question: does one dose of creatine fit all? The authors concluded tissue target matters. Muscle, bone, and brain do not respond exactly the same way. Their review notes bone-related benefits appear most consistent when creatine is paired with exercise and dosed closer to 0.10–0.14 g/kg/day. For brain outcomes, the optimal dose and duration remain less clear, but higher or longer dosing may be needed to meaningfully raise brain creatine levels. (ScienceDirect)
In plain English: muscle fills more easily. Bone and brain may require a different strategy.
Creatine and bone health
This area is interesting, but patients need a realistic message.
Creatine is not a stand-alone osteoporosis treatment. It does not replace protein, resistance training, vitamin D, calcium when appropriate, hormone evaluation, fall prevention, or medications when needed.
But creatine may support the training response in bone and muscle, especially in aging adults.
In a 2-year randomized trial of postmenopausal women, participants took creatine at 0.14 g/kg/day while also completing resistance training three days per week and walking six days per week. The study did not show a significant improvement in femoral neck, total hip, or lumbar spine bone mineral density, but it did show improvements in several bone geometry and structural measures. (tau.userservices.exlibrisgroup.com)
Another 2-year trial used only 3 grams per day in older postmenopausal women with osteopenia and found little meaningful bone benefit. (OUP Academic)
This gives us a practical clinical lesson: if the goal is bone support, 3 grams alone should not be treated as the same intervention as a higher, weight-based dose plus resistance training.
Creatine and brain health
Creatine may also support brain energy, but the brain is harder to influence than muscle.
The brain uses a lot of energy, but creatine entry into the brain appears slower and more limited than entry into skeletal muscle. This may explain why cognitive studies are mixed.
The most promising situations appear to be states of stress or increased energy demand, such as sleep deprivation, mental fatigue, aging, lower dietary creatine intake, or certain neurologic conditions. The research is promising but not settled enough to claim every patient needs high-dose creatine for cognition.
The current practical message is this: creatine is reasonable to consider as part of a brain-energy strategy, but we should avoid overselling it.
Blue Sky MD creatine dose algorithm
General wellness and muscle support:
Take 3–5 grams daily of creatine monohydrate.
Weight loss, GLP-1 therapy, aging, or sarcopenia prevention:
Take 5 grams daily, and consider 5–10 grams daily if the patient is larger, more active, losing weight rapidly, or actively strength training.
Masters athletes or patients over 40 focused on muscle, bone, and brain:
Consider taking 10 grams daily, usually split as 5 grams twice daily with meals.
Bone-focused support:
Consider 0.10–0.14 g/kg/day, paired with resistance training.
For a 70 kg patient, this is about 7–10 grams daily.
For an 80 kg patient, this is about 8–11 grams daily.
For a 90 kg patient, this is about 9–13 grams daily.
Brain energy, sleep deprivation, cognitive stress, or high-demand work:
Consider 5–10 grams daily. Higher-dose brain protocols remain research-based and should be individualized.
Contact sport or high-impact athlete:
Consider 10 grams daily as a year-round baseline, especially during training and competition seasons. This is based on tissue-saturation logic and safety data, not definitive proof creatine prevents concussion.
How to take it
Use creatine monohydrate. Pro tip: use the “micronized” form of creatine monohydrate as it dissolves better in liquids.
Take it daily.
Take it with food if it bothers your stomach.
If taking more than 5 grams per day, split the dose.
For example: 5 grams with breakfast and 5 grams with dinner.
No loading phase is needed for most people. Loading can work faster, but it also increases the chance of bloating, nausea, or loose stools.
Is creatine safe?
Creatine monohydrate is well studied and generally safe for healthy adults when used responsibly. The strongest safety and performance data are for creatine monohydrate, not expensive “advanced” forms.
Patients should speak with their clinician before using creatine if they have known kidney disease, unexplained low kidney function, pregnancy or breastfeeding, active dehydration risk, eating disorder behavior, or use of medications with kidney risk.
Creatine can raise blood creatinine on lab work because creatinine is a breakdown product of creatine. This does not always mean kidney damage, but it does mean labs should be interpreted in clinical context.
Let’s recap
The 5-gram recommendation is not wrong. However, it may be incomplete.
For simple muscle support, 3–5 grams daily is still a good dose.
For aging patients, larger athletes, GLP-1 patients trying to preserve lean mass, postmenopausal bone support, cognitive stress, or high-impact sport, a more thoughtful dose may be 5–10 grams daily, or 0.10–0.14 g/kg/day when bone is a primary target.
Creatine works best when paired with the basics: adequate protein, resistance training, sleep, hydration, and a clear clinical goal.
If you any questions about creatine, or how it integrates with a more effective GLP-1 program, contact us today.
Sources:
Kreider RB, Kalman DS, Antonio J, et al. International Society of Sports Nutrition Position Stand: Safety and Efficacy of Creatine Supplementation in Exercise, Sport, and Medicine. Journal of the International Society of Sports Nutrition. 2017. (Springer)
Candow DG, Ostojic SM, Forbes SC, Antonio J. Does One Dose of Creatine Supplementation Fit All? Advanced Exercise and Health Science. 2024. (ScienceDirect)
Chilibeck PD, Candow DG, Gordon JJ, et al. A 2-Year Randomized Controlled Trial on Creatine Supplementation During Exercise for Postmenopausal Bone Health. Medicine & Science in Sports & Exercise. 2023. (tau.userservices.exlibrisgroup.com)
Sales LP, Pinto AJ, Rodrigues SF, et al. Creatine Supplementation 3 g/day and Bone Health in Older Women: A 2-Year, Randomized, Placebo-Controlled Trial. The Journals of Gerontology: Series A. 2020.
