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Head-to-head evidence comparison — which supplement is right for you?
Casein Protein wins 1 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
12 of 14 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
4 of 4 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (2)
Outcomes where both Beta-Alanine and Casein Protein have evidence — compare verdict strength side-by-side.
3.2-6.4g daily
Anytime - timing doesn't affect carnosine buildup
CarnoSyn® sustained-release tablets
30-40g before bed
30-60 minutes before bed, Between meals for sustained protein
Micellar Casein powder
2-4 weeks
2-4 weeks
15-30 minutes post-dose
Overnight
2-4 weeks
4-8 hours
Always
Beta-alanine supplementation and exercise performance: A meta-analysis
British Journal of Sports Medicine (2017) · Meta analysis · n=1461
Significant improvement in exercise capacity
ISSN position stand: Beta-alanine
Journal of the International Society of Sports Nutrition (2015) · Review
Increases muscle carnosine by 40-80%
Effects of different dietary supplements on athletic performance in soccer players: a systematic review and network meta-analysis
Journal of the International Society of Sports Nutrition (2025) · Meta analysis
Kaempferia parviflora (SMD: 0.46, small) was associated with a significant effect on enhancing muscular strength.
Effects of supplementation with milk protein on glycemic parameters: a GRADE-assessed systematic review and dose-response meta-analysis
Nutrition journal (2023) · Meta analysis · n=1851
The findings of this study suggest that supplementation with MP may improve glycemic control in adults by reducing the values of fasting insulin, FBG, and HOMA-IR.
Pre-Sleep Casein Supplementation, Metabolism, and Appetite: A Systematic Review
Nutrients (2021) · Systematic review · n=11
However, it remains unclear what the effect of this nutritional strategy is on non-muscular parameters such as metabolism and appetite in both healthy and unhealthy populations.
Pre-Sleep Protein Ingestion to Improve the Skeletal Muscle Adaptive Response to Exercise Training
Nutrients (2016) · Review
Protein ingested prior to sleep is effectively digested and absorbed, and thereby stimulates muscle protein synthesis rates during overnight recovery.
Meta-analysis of 1461 subjects showed 2.85% median improvement. Effect size 0.39 overall, with optimal effects at 5.6-6.4g/day. Most effective for 1-4 minute high-intensity efforts. Side effect risk primarily reflects paresthesia (tingling), which is common but harmless.
Based on systematic review (n=387) showing pre-sleep casein enhances training adaptations and increases muscle fiber size. Optimal dose identified as 30-40g. Limited to pre-sleep timing and requires concurrent exercise training.
AI-estimated from published studies. Interpret as directional guidance.
Casein Protein has a higher evidence score (7.5/10 vs 7.5/10) and wins in 1 of 3 categories.
For build strength & muscle, Casein Protein has a higher relevance score (88 vs 70).
No known interactions between Beta-Alanine and Casein Protein have been documented in our database. However, always consult a healthcare provider before combining supplements.