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Head-to-head evidence comparison — which supplement is right for you?
HMB vs Sodium Bicarbonate: HMB has the stronger overall evidence (6 vs 7.5/10); they're alternatives for improve endurance — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
HMB wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Probably helps
10 of 15 studies with measurable effects showed benefit.
Top outcomes
Verdict
Probably helps
6 of 10 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both HMB and Sodium Bicarbonate have evidence — compare verdict strength side-by-side.
3g daily
Split into 1g doses 3x daily, Or all at once with a meal
HMB-Ca (calcium salt) capsules or 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
4-8 weeks
N/A
1-2 weeks
Acute (1-3 hours)
Acute
Nutritional interventions for treating foot ulcers in people with diabetes
The Cochrane database of systematic reviews (2020) · Meta analysis · n=629
It is also uncertain whether arginine, glutamine and β-hydroxy-β-methylbutyrate supplement increases the proportion of ulcers healed at 16 weeks compared with placebo (RR 1.09, 95% CI 0.85 to 1.40).
β-Hydroxy-β-methylbutyrate and its impact on skeletal muscle mass and physical function in clinical practice: a systematic review and meta-analysis
The American journal of clinical nutrition (2019) · Meta analysis · n=2137
Effect sizes were small.
Dietary Supplementation on Physical Performance and Recovery in Active-Duty Military Personnel: A Systematic Review of Randomized and Quasi-Experimental Controlled Trials
Nutrients (2024) · Systematic review
Nutrition supplementation may have small benefits on muscle performance and recovery in warfighters.
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%).
Meta-analyses show small but significant effects on total body mass and fat-free mass. Effect sizes are consistently reported as 'small' (ES ~0.21-0.22). Multiple studies show no significant effects in older adults or sarcopenia patients. HMB-FA form may have superior bioavailability to HMB-Ca.
Based on meta-analyses showing performance improvements in combat sports and cycling. GI distress is dose-limiting factor. Effects primarily observed in events lasting 1-7 minutes. Individual variation in tolerance is high.
AI-estimated from published studies. Interpret as directional guidance.
HMB has a higher evidence score (6/10 vs 7.5/10) and wins in 2 of 3 categories.
For improve endurance, Sodium Bicarbonate has a higher relevance score (90 vs 45).
No known interactions between HMB and Sodium Bicarbonate have been documented in our database. However, always consult a healthcare provider before combining supplements.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.