Creatine
The most well-researched sports supplement, proven to increase strength, power, and muscle mass with emerging cognitive benefits
Bottom Line
Creatine monohydrate is the gold standard of sports supplements. With over 500 peer-reviewed studies, it's one of the most researched compounds in sports science. The evidence for increased strength, power output, and lean mass is overwhelming. Emerging research also shows cognitive benefits, particularly under stress or sleep deprivation.
If you do any form of resistance training, creatine should be in your stack. It's safe, cheap, and effective. No loading phase needed - just 3-5g daily.
Science
Mechanisms:
- Increases phosphocreatine stores in muscle
- Enhances ATP regeneration during high-intensity exercise
- Increases cell hydration (draws water into muscle cells)
- May increase IGF-1 and satellite cell activity
- Crosses blood-brain barrier; supports brain ATP
Key studies:
- Rawson & Volek (2003): Meta-analysis showing 8% greater strength gains vs placebo
- Branch (2003): Meta-analysis confirming increased lean body mass
- Avgerinos et al. (2018): Review showing cognitive benefits, especially under stress
Effect sizes:
- Strength gains: 8-14% greater than training alone
- Lean mass: 1-2 kg greater over 4-12 weeks
- Power output: 5-15% improvement
- Cognitive: Small to moderate effect under stress/sleep deprivation
Limitations:
- Non-responders exist (~20-30% see minimal benefit)
- Weight gain from water retention (1-2 kg)
- Most research on young males; less data on older adults
- Cognitive benefits need more research
Supporting Studies
13 peer-reviewed studies
View all studies & compare research →Practical Protocol
Standard protocol:
- Take 3-5g creatine monohydrate daily
- Timing doesn't matter - consistency does
- Take with food or without - absorption is similar
- No cycling needed - take continuously
Loading protocol (optional):
- 20g/day split into 4 doses for 5-7 days
- Then maintain with 3-5g/day
- Reaches saturation faster but not necessary
For cognitive benefits:
- Same dose: 3-5g daily
- May take 4+ weeks to see effects
- Benefits most apparent under stress or sleep deprivation
Common mistakes:
- Underdosing (need 3-5g, not 1-2g)
- Inconsistent use (daily is key)
- Expecting immediate results (takes 2-4 weeks)
- Buying expensive forms (monohydrate is best)
Risks & Side Effects
Known risks:
- Weight gain (1-2 kg from water retention)
- Possible GI discomfort if taken without food
- Anecdotal reports of muscle cramps (not confirmed in studies)
Contraindications:
- Pre-existing kidney disease (consult doctor)
- No evidence of harm to healthy kidneys despite myths
Debunked concerns:
- Does NOT cause kidney damage in healthy individuals
- Does NOT cause hair loss (no quality evidence)
- Does NOT cause dehydration (opposite - increases hydration)
Interactions:
- Caffeine may reduce some ergogenic effects (conflicting data)
- No significant negative drug interactions known
Who It's For
Ideal for:
- Anyone doing resistance training
- Athletes in power/strength sports
- Older adults wanting to preserve muscle
- Vegetarians/vegans (lower baseline creatine stores)
- Those seeking cognitive edge under stress
Should skip:
- Those with kidney disease (consult doctor first)
- People who can't tolerate water weight gain
- Those in weight-class sports near competition
Best responders:
- People with lower baseline creatine (vegetarians, vegans)
- Those doing high-intensity training
- Individuals under 40 (though older adults still benefit)
How to Track Results
What to measure:
- Body weight (expect 1-2 kg increase initially)
- Strength on key lifts (bench, squat, deadlift)
- Training volume (reps x sets x weight)
- Subjective recovery between sets
Tools:
- Workout log to track lifts
- Scale for body weight
- Optional: DEXA scan for body composition
Timeline:
- Weight increase: Within first week
- Strength gains: 2-4 weeks
- Visible muscle fullness: 2-4 weeks
- Cognitive effects: 4+ weeks
Signs it's working:
- Increased weight (water + muscle)
- More reps on later sets
- Faster recovery between sets
- Muscles feel "fuller"
Top Products
Recommended (monohydrate):
- Thorne Creatine - NSF certified, high purity
- Creapure - German-made, gold standard
- NOW Sports Creatine - Good budget option
- Bulk Supplements Creatine - Best value
What to look for:
- Creatine monohydrate (not other forms)
- Third-party tested (NSF, Informed Sport)
- No unnecessary additives
What to avoid:
- Creatine ethyl ester (less effective)
- Liquid creatine (degrades quickly)
- Overpriced "buffered" or "advanced" forms
- Products with excessive fillers
Cost Breakdown
Budget ($10-15/month):
- Bulk Supplements - ~$0.03/g
- NOW Sports - ~$0.04/g
Mid-range ($15-25/month):
- Creapure brands - ~$0.05/g
- Optimum Nutrition - ~$0.05/g
Premium ($25-40/month):
- Thorne - ~$0.08/g (NSF certified)
Cost-per-benefit assessment:
Creatine offers exceptional value. Even premium brands cost under $1/day. Budget options are equally effective - you're paying for purity testing, not better creatine.
Podcasts
Science of Muscle Growth & Strength
Progressive overload drives muscle growth; creatine (3-5g daily, no loading needed) is the only...
Dr. Andy Galpin on Nutrition for Performance
Nail your supplement stack with evidence-based dosing: 3-5g creatine daily, protein at...
Essentials: Food & Supplements for Brain Health & Cognitive Performance
Three supplements with solid evidence for brain health: EPA omega-3s (1.5-3g daily) for neuronal...
#100 The Optimal Creatine Protocol for Strength, Brain, and Longevity | Darren Candow, PhD
Loading phase (20g/day for 2-7 days) saturates muscle fast; without loading, 3g daily takes...
Discussed in Podcasts
Creatine 3-5g daily for women: benefits for brain, mood, and gut health
Creatine is the top supplement for women at any age, supporting brain, mood, and gut health. Use CreaPure brand to avoid GI side effects from acid-washed alternatives. No evidence it causes hair loss.
We can also say that creatine is an excellent mitochondrial medicine
We can also say that creatine is an excellent mitochondrial medicine. Although creatine is primarily acting outside the mitochondria, what it's doing is it is acting as the mitochondria's power grid.
Creatine and whey protein for athletes
Jordan Sullivan discusses creatine and whey protein as practical whole-food supplementation examples where getting enough from diet alone is difficult for athletes.
Creatine's Evolution from Strength to Cognitive Enhancement
Extended discussion comparing creatine's traditional strength benefits to newer applications for cognitive support and sleep deprivation, contrasting supplement popularity with more serious pharmaceutical interventions.
Creatine: 5g/day for 180 lbs, supported by 66 studies on muscle performance
Creatine at 5 grams per day for a 180-pound person is backed by 66 studies on examine.com.
Creatine plus urolithin A: Dr. Lyon's dream supplement stack for muscle and mitochondria
Dr. Lyon recommends creatine monohydrate (especially for postmenopausal women) plus urolithin A (500-1000mg) which improves mitophagy and increases strength and endurance via a gut-muscle connection.
Who to Follow
Researchers:
- Andy Galpin, PhD - Muscle physiology expert
- Layne Norton, PhD - Evidence-based nutrition
Practitioners:
- Andrew Huberman, PhD - Protocols and mechanisms
Synergies & Conflicts
Pairs well with:
- Resistance training - Required to see benefits
- Carbohydrates - May enhance uptake (not required)
- Beta-alanine - Complementary mechanisms
- Protein - Both support muscle protein synthesis
Timing considerations:
- Timing doesn't matter - just take daily
- Some prefer post-workout with protein shake
- Can take with or without food
Stacks with:
- Caffeine (conflicting data on interaction)
- Beta-alanine (different mechanisms, additive benefits)
- HMB (for older adults or during calorie restriction)
What People Say
Reddit communities:
Common positive reports:
Common complaints: