Soccer Supplements Ranked: Caffeine, Creatine, and the Data

Caffeine is the most useful single supplement in soccer—not because it wins every test, but because it shows modest benefits across more performance domains than any other monotherapy. A 2025 network meta-analysis of 80 randomized controlled trials ranked 31 legal supplements across eight soccer-relevant outcomes and found that caffeine improved distance covered (standardized mean difference [SMD] 0.29), jump height (SMD 0.37), and agility (SMD -0.38; negative values indicate faster performance). Luo et al.'s 2025 network meta-analysis also gave several combinations the highest rankings for individual outcomes. Those larger numbers deserve interest—and restraint.

The result settles a long-running dressing-room argument more neatly than the usual caffeine-versus-creatine debate. Creatine remains a reasonable option for power-focused players, especially for jumping. But in this analysis, caffeine had the broader and more consistent single-ingredient profile. The biggest sprint and agility estimates belonged to formulations that combined ingredients, not creatine monohydrate alone.

A leaderboard, not a universal winner

The analysis compared supplements across distance covered, sprint time, jump height, agility, muscular endurance, repeated-sprint ability, VO₂max, and lactate threshold. No product led all eight outcomes. That matters because a player trying to cover more ground has a different problem from a player chasing a small edge in repeated accelerations.

Combination products occupied the top spots in several narrow categories. Carbohydrate plus protein ranked first for distance covered, with an SMD of 2.2. Magnesium creatine chelate ranked first for sprint time (SMD -3.0). Creatine plus sodium bicarbonate ranked first for agility (SMD -2.3) and also showed a sprint estimate of -1.4. These are striking standardized effects, especially in a sport where physical performance also moves with training load, tactics, sleep, heat, and match congestion.

Network rankings can identify promising options. They do not make a large point estimate a dependable forecast for every player.

Among single ingredients, caffeine had the broadest profile when the rankings were considered across outcomes. Creatine monohydrate had a notable jump-height estimate of 0.33, but its evidence for sprint time and agility was weaker and less consistent than the creatine-based combinations. This distinction is easy to lose when "creatine" becomes shorthand for every creatine-containing product. The data do not support treating creatine monohydrate, magnesium creatine chelate, and creatine plus sodium bicarbonate as interchangeable interventions.

Why caffeine edges creatine as the practical first choice

A 2023 systematic review of elite soccer players had already identified caffeine and creatine as the best-supported single supplements. It also documented inconsistent results across individual trials. The newer network analysis adds something pairwise comparisons could not: indirect comparisons across the whole network of interventions and outcomes.

Caffeine's advantage is breadth. The included studies commonly used 3–6 mg per kilogram of body weight about 60 minutes before exercise. For a 70-kilogram player, that equals 210–420 mg. The lower end is a sensible place to test tolerance; a dose that turns pre-match focus into trembling hands and a bathroom itinerary has missed the assignment.

Creatine has a different use case. Loading protocols in the soccer literature included about 0.3 g/kg/day for five to seven days, while maintenance protocols used 3–5 g/day. The network estimate for jump height supports creatine monohydrate as a targeted power supplement. It does not establish that creatine alone reliably improves sprint performance for every recreational, amateur, or professional player.

Evidence outside soccer reinforces that caution. A 2021 meta-analysis of creatine plus resistance training in older females found that strength outcomes varied with population and training status. That study did not test soccer players or sprinting, so it cannot revise the soccer ranking. It does show why a very large result in one protocol and population should not become a universal promise.

The combination-supplement numbers need replication

Creatine plus sodium bicarbonate has a plausible rationale: creatine supports phosphocreatine resynthesis, while bicarbonate can buffer exercise-related acid. The protocol commonly paired creatine with about 0.3 g/kg sodium bicarbonate 60–90 minutes before exercise. The practical limitation is gastrointestinal tolerance. At that bicarbonate dose, a substantial minority of users experience distress, which can erase a theoretical performance gain before warm-up ends.

More important, the largest network estimates came from combination-supplement nodes that likely had few contributing trials. The headline rankings do not, by themselves, establish precision, consistency, or reproducibility. The full node-by-node confidence intervals and heterogeneity statistics are needed to judge how much weight each estimate can bear.

A 2021 meta-analysis of high-intensity interval training in male soccer players offers a useful reality check. It found meaningful aerobic and anaerobic gains from training alone. It did not compare training with supplements, so it cannot prove that a supplement estimate is inflated. Still, when a small combination-supplement node reports an SMD above 2 or 3, comparison with the established effects of structured training gives a good reason to regard the magnitude as preliminary rather than budget for it as a guaranteed upgrade.

Female players and newer candidates remain under-studied

The network meta-analysis closed its search on February 5, 2024, and much of its evidence base involved male players. That limits how confidently its rankings transfer to women's professional soccer. A 2025 randomized controlled trial in Spanish professional female soccer players tested chronic nitrate and citrulline malate supplementation on performance and recovery outcomes. Its publication after the search cutoff means it was not part of the network ranking. The trial is valuable population-specific evidence, but one study cannot close the broader sex-specific evidence gap.

Omega-3 fatty acids are a poorer bet for an immediate soccer-performance stack. A 2024 systematic review of randomized trials in physically healthy adults found no conclusive evidence that omega-3 supplementation improves post-exercise inflammation, muscle-damage markers, oxidative response, recovery, or sports performance. Anti-inflammatory mechanisms create a rationale for research, not proof of a useful match-day effect.

The same applies to postbiotics. A 2024 systematic review found limited evidence that these nonviable bacterial products improve exercise performance or recovery. They belong on a watch list, not ahead of caffeine or a well-tested creatine protocol.

What a soccer player can reasonably do now

• Start with caffeine if you tolerate it and want the strongest single-ingredient case across several soccer outcomes: 3–6 mg/kg about 60 minutes before training or a match.
• Use creatine monohydrate for a power-focused goal, particularly jump performance, with either a loading approach or 3–5 g/day maintenance dosing.
• Treat creatine plus sodium bicarbonate as an experiment, not a certainty. The network ranks it highly for sprint and agility, but the extreme effect sizes need larger independent trials, and bicarbonate can cause gastrointestinal problems.
• Do not let omega-3s, nitrate products, or postbiotics displace the better-supported basics. Their current evidence is inconclusive, limited, or population-specific.

Training still does the heavy lifting. The best reading of the 80-trial network is not that one powder transforms a soccer player. It is that caffeine has the most credible claim as the first supplement to test, creatine has a narrower but defensible role, and the most spectacular combination-product estimates have not yet earned the same confidence.