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Head-to-head evidence comparison — which supplement is right for you?
Beta-Alanine vs TMG: Beta-Alanine has the stronger overall evidence (7.5 vs 5.8/10); 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.
Beta-Alanine wins 3 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
5 of 7 studies with measurable effects showed benefit.
Top outcomes
Verdict
Too few graded studies
Top outcomes
Shared outcomes (2)
Outcomes where both Beta-Alanine and TMG have evidence — compare verdict strength side-by-side.
3.2-6.4g daily
Anytime - timing doesn't affect carnosine buildup
CarnoSyn® sustained-release tablets
2.5-6g betaine/TMG daily (performance studies commonly use ~2.5g; methylation/homocysteine use up to 6g) (the one cited trial used 3 g a day)
With meals
Betaine anhydrous (TMG)
2-4 weeks
2-4 weeks
15-30 minutes post-dose
2-6 weeks
4-8 weeks
4-8 weeks
Throughout use
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 · n=1425
Kaempferia parviflora (SMD: 0.46, small) was associated with a significant effect on enhancing muscular strength.
Effects of Betaine Supplementation on Muscle Strength and Power: A Systematic Review.
Journal of strength and conditioning research (2017) · Systematic review
Only 2 of 7 trials reported strength/power increases; the remaining 5 showed no change
Effects of chronic betaine supplementation on exercise performance: Systematic review and meta-analysis.
Journal of sports sciences (2024) · Meta analysis
Significant effect on maximal strength (SMD 0.47, 95% CI 0.04-0.89), particularly lower body
Betaine supplementation fails to improve body composition: a systematic review and meta-analysis.
The British journal of nutrition (2022) · Meta analysis
No significant change in body fat or lean mass
The two points come from two separate small placebo-controlled trials, and neither compared doses. At 4.8 g a day for 30 days, 8 resistance-trained men completed 22% more squat repetitions than with placebo (PMID 18548362). At 6.4 g a day for 4 weeks, 23 highly-trained judo athletes made more throws in a judo fitness test, with no change with placebo (PMID 27601217). The outcomes differ, so the equal heights mean only that both doses helped, not that 6.4 g adds nothing over 4.8 g. A 7-day trial in 11 World Tour cyclists at 20 g a day (four 5 g servings) improved uphill time-trial power (PMID 39226288), but that short loading protocol is not comparable with weeks of daily dosing and is not plotted. Neither plotted trial reports side effects in its abstract, so no ceiling is given. Reviews put the effective range at 4 to 6.4 g a day (PMID 26175657, PMID 40995761) without comparing doses within a trial.
AI-estimated from published studies. Interpret as directional guidance.
Beta-Alanine has a higher evidence score (7.5/10 vs 5.8/10) and wins in 3 of 3 categories.
For improve endurance, Beta-Alanine has a higher relevance score (90 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.