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Head-to-head evidence comparison — which supplement is right for you?
Casein Protein vs Sodium Bicarbonate: they're closely matched on evidence (7.5 vs 7.5/10); they're alternatives for build strength & muscle — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Casein Protein and Sodium Bicarbonate are closely matched across evidence, studies, and safety.
Verdict
Too few graded studies
1 of 1 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
3 of 4 studies with measurable effects showed benefit.
Top outcomes
30-40g before bed
30-60 minutes before bed, Between meals for sustained protein
Micellar Casein powder
0.2-0.3g per kg bodyweight (14-21g for 70kg person)
60-180 minutes before exercise, Split into multiple doses
Pharmaceutical-grade sodium bicarbonate powder or capsules
Overnight
2-4 weeks
4-8 hours
Always
Acute (1-3 hours)
Acute
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
Meta-analysis of 36 RCTs in 1,851 adults of milk protein supplementation, whey and casein included.
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.
Sodium Bicarbonate Treatment and Clinical Outcomes in Chronic Kidney Disease with Metabolic Acidosis: A Meta-Analysis
Clinical journal of the American Society of Nephrology : CJASN (2024) · Meta analysis · n=2037
Fourteen RCTs comprising 2037 patients demonstrated that sodium bicarbonate supplementation significantly improved eGFR (standardized mean difference [SMD], 0.33; 95% confidence interval [CI], 0.03 to 0.63; P = 0.03).
Nutritional Ergogenic Aids in Cycling: A Systematic Review
Nutrients (2024) · Systematic review · n=701
However, no statistically significant effects were identified for the remaining supplements, whether administered individually or in combination.
Effects of Different Dietary Supplements on Swimming Performance: A Systematic Review and Network Meta-Analysis
Nutrients (2024) · Meta analysis
L-arginine (Arg) demonstrated superior performance to the placebo (SMD = -1.66, 95% CI [-2.92, -0.44]), emerging as the most effective intervention for reducing 100 swimming time (SUCRA = 89.5%).
The ISSN position stand (PMID 34503527) reviews single-dose trials at 0.2 to 0.5 g/kg: 0.2 g/kg appears to be the minimum dose that improves performance, 0.3 g/kg the optimum, and 0.4 or 0.5 g/kg add no benefit over 0.3 g/kg while causing more frequent and more severe side effects such as bloating, nausea, vomiting and abdominal pain, so the curve is flat above 0.3 g/kg while side effects rise. The benefit is mainly for high-intensity efforts of 30 seconds to 12 minutes. At 0.3 g/kg, a crossover trial in 14 trained cyclists improved 40 km time trial performance (PMID 39068627), and a meta-analysis found effects on anaerobic but not aerobic metabolism (PMID 33546730).
AI-estimated from published studies. Interpret as directional guidance.
Both Casein Protein and Sodium Bicarbonate are closely matched — the best choice depends on your specific health goals.
For build strength & muscle, Casein Protein has a higher relevance score (88 vs 48).
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.