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Best Supplements for Athletes (2026)
Last reviewed: 2025-03-01 | Based on 10 products scored | Clinical dose: 3-5g daily (loading phase optional: 20g/day for 5-7 days)
The vast majority of sports supplements are overhyped and underdelivering. Only a handful have strong, consistent evidence for improving athletic performance. Creatine monohydrate sits at the top with over 500 published studies showing benefits for strength, power, and lean mass. We focus on the supplements with actual RCT evidence in trained athletes - not rat studies or untrained college students - and score them on evidence strength, sport-certification status, and cost per effective dose.
Our Top Picks
Micronized Creatine Monohydrate Powder
$0.33/day at effective dose
Creatine Monohydrate Powder
$0.13/day at effective dose
Creatine (Creapure)
$0.87/day at effective dose
Detailed Reviews
Micronized Creatine Monohydrate Powder
Micronized Creatine Monohydrate (Creapure) | 5000mg/serving | 120 servings
One of the best-selling creatine supplements globally, Creapure sourced with third-party testing
Check Price on Amazon →Creatine (Creapure)
Micronized Creatine Monohydrate (Creapure) | 5000mg/serving | 90 servings
Creapure is manufactured in Germany by AlzChem and is considered the purest creatine source available
Check Price on Thorne →Creatine Monohydrate Powder
Micronized Creatine Monohydrate | 5000mg/serving | 100 servings
Exceptional value if third-party testing is not a priority for you
Check Price on Amazon →Also Scored
Sports Creatine Monohydrate Powder
$0.19/day | Creatine Monohydrate
Naked Creatine
$0.22/day | Micronized Creatine Monohydrate
Klean Creatine
$0.93/day | Creatine Monohydrate (Creapure)
Creatine Monohydrate
$1.17/day | Creatine Monohydrate (Creapure)
Creatine Monohydrate Powder
$0.10/day | Creatine Monohydrate
StrengthSeries Creatine HMB
$1.33/day | Creatine Monohydrate + HMB + Vitamin D + BioPerine
Cell-Tech Creatine
$1.67/day | Creatine Monohydrate + proprietary blend of added aminos and carbs
What to Look For When Buying
- ✓Creatine monohydrate is the most evidence-backed sports supplement - 5g daily, no loading or cycling needed
- ✓NSF Certified for Sport or Informed Sport certification is essential for competitive athletes subject to drug testing
- ✓Caffeine (3-6mg/kg) has strong evidence for endurance and power performance but is already consumed via coffee by most athletes
- ✓Beta-alanine (3.2-6.4g/day) benefits efforts lasting 1-4 minutes - the tingling is harmless and fades with chronic use
- ✓Most pre-workout formulas contain effective ingredients at sub-clinical doses inside proprietary blends - buy ingredients separately
- ✓Electrolyte replacement is evidence-based for sessions over 60 minutes or in high heat, but branded mixes are often overpriced vs DIY
Frequently Asked Questions
Do I need to do a loading phase with creatine?
No. A loading phase (20g/day for 5-7 days) saturates muscle creatine stores faster, but taking 3-5g daily will achieve the same saturation in about 3-4 weeks. Loading can cause GI discomfort in some people, so a standard daily dose is fine.
Does creatine cause hair loss?
This concern comes from a single 2009 study (van der Merwe) that found increased DHT levels in rugby players using creatine. No subsequent study has replicated this finding, and no study has directly measured hair loss with creatine supplementation. The current evidence does not support this claim.
Is creatine safe for your kidneys?
In healthy individuals, yes. Decades of research including long-term studies (up to 5 years) show no adverse effects on kidney function at recommended doses. Creatine does raise creatinine levels (a kidney biomarker), which can be mistaken for kidney dysfunction on blood tests. Inform your doctor if you supplement creatine.
Is creatine HCl better than creatine monohydrate?
No evidence supports this. Creatine HCl is more water-soluble, which may reduce bloating in some people, but no peer-reviewed study has shown it is more effective for performance or muscle gains than monohydrate. You would be paying more for an unproven advantage.
Should I cycle creatine?
There is no evidence that cycling creatine (taking breaks) provides any benefit. The body does not develop tolerance to creatine. Consistent daily supplementation maintains saturated muscle stores. Just take 3-5g every day.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products discussed on this page are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before starting any supplement regimen.