The Network Meta-Analysis Settles It
A 2026 network meta-analysis in Nutrients directly compared creatine, protein, and omega-3 across 35 trials (1,211 trained athletes) for three distinct outcomes:[1]
| Outcome | Winner | Effect Size | SUCRA Rank |
|---|---|---|---|
| Muscle Strength | Creatine | SMD = 0.46 (95% CI: 0.29–0.63) | 82.4% |
| Endurance | Protein | SMD = 0.28 (95% CI: 0.08–0.48) | 85.2% |
| Recovery | Omega-3 | SMD = 0.40 (95% CI: 0.18–0.62) | 88.7% |
Different Goals, Different Supplements
| Creatine | Protein Powder | |
|---|---|---|
| Best For | Maximal strength, power, sprint performance | Muscle endurance, recovery, lean mass in deficit |
| Mechanism | ATP regeneration (phosphocreatine system) | Muscle protein synthesis (amino acid provision) |
| Dose | 3–5 g/day (maintenance) | 1.2–1.6 g/kg/day total protein |
| Timing | Any time (stores saturate over days) | Within 2–3 hrs of training (MPS window) |
| Weight Effect | +0.86 kg (water retention + lean mass) | -1.6 kg in caloric deficit (preserves lean mass) |
| Cognitive Benefits | Yes (SMD 0.88 in elderly) | No |
| Cost | ~$0.10/day | ~$1–2/serving |
| Vegan Options | Yes (synthesized, not animal-derived) | Yes (pea, rice, soy protein) |
When to Choose Creatine
- Your training is strength/power-focused — heavy lifts, sprints, explosive movements
- You want the most cost-effective supplement in existence (~$0.10/day for creatine monohydrate)
- You're interested in cognitive benefits alongside physical performance
- You already get adequate protein from food (1.6+ g/kg/day)
When to Choose Protein
- Your training emphasizes endurance or volume
- You're in a caloric deficit and need to preserve lean mass
- Your dietary protein intake is below 1.2 g/kg/day
- You need a convenient post-workout meal replacement
Can You Take Both?
Yes — and many athletes do. They serve completely different functions. Creatine saturates muscle phosphocreatine stores (energy system). Protein provides amino acids for muscle repair and growth (structural system). There's no interference between them, and combining both addresses two independent performance bottlenecks.
The Bottom Line
The network meta-analysis makes it clear: creatine for strength, protein for endurance. They're not competitors — they're complementary tools for different aspects of performance. If you can only pick one, choose based on your primary training goal. If budget allows, both is the evidence-supported approach.
References
- Wang Z, et al. "Comparative Effects of Dietary Protein, Creatine, and Omega-3 on Muscle Strength, Endurance, and Recovery: Network Meta-Analysis." Nutrients. 2026. 35 trials, 1,211 participants. PubMed