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Head-to-head evidence comparison — which supplement is right for you?
Ashwagandha vs HMB: HMB has the stronger overall evidence (6 vs 7.5/10); they're alternatives for speed up recovery — 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
Likely helps
4 of 4 studies with measurable effects showed benefit.
Top outcomes
Verdict
Probably helps
4 of 6 studies with measurable effects showed benefit.
Top outcomes
300-600mg daily (standardized extract)
Morning for daytime stress, Evening for sleep support
KSM-66 or Sensoril standardized extract
3g daily
Split into 1g doses 3x daily, Or all at once with a meal
HMB-Ca (calcium salt) capsules or powder
2-4 weeks
2-4 weeks
2-4 weeks
First week
4-8 weeks
N/A
1-2 weeks
Effects of Ashwagandha (Withania Somnifera) on stress and anxiety: A systematic review and meta-analysis
Explore (NY) (2024) · Meta analysis · n=558
Significant effect on the Perceived Stress Scale (PSS) (MD = -4.72, 95 % CI = [-8.45 to -0.99]).
Effects of Withania somnifera Extract in Chronically Stressed Adults: A Randomized Controlled Trial
Nutrients (2024) · Rct · n=131
8-week double-blind RCT in adults with self-reported high stress comparing an aqueous root and leaf extract at 125, 250 and 500 mg a day with placebo (131 enrolled, 98 analysed).
Plant-derived nootropics and human cognition: A systematic review
Critical reviews in food science and nutrition (2023) · Systematic review
Bacopa monnieri improves language, learning and memory.
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.
The points come from one 8-week dose-comparison RCT of an aqueous root and leaf extract at 125, 250 or 500 mg a day against placebo in adults with self-reported high stress (PMID 38732539, 131 enrolled, 98 analysed). All three doses reduced perceived stress and were reported as safe, and the authors describe the effect as dose-dependent. The abstract gives no per-dose effect sizes, so the curve shows only that ordering, not how large each step is. It also does not show whether doses above 500 mg add more. Trials of other extracts (root-only extract at 600 mg a day, PMID 23439798, and a 240 mg extract, PMID 31517876) are not on this axis because milligrams of different extracts are not equivalent.
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 speed up recovery, HMB has a higher relevance score (75 vs 70).
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
The honest tier list — proven staples vs situational vs mostly marketing. The hub the other guides feed into.
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Ashwagandha, L-theanine, magnesium, saffron — what actually helps stress, and the safety caveats.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.