Question
Is HMB (β-hydroxy β-methylbutyrate) legit?
In context of HMB (β-hydroxy β-methylbutyrate)·Mixed evidence58/100
In our editorial model, HMB (β-hydroxy β-methylbutyrate) maps to a Mixed evidence verdict at 58/100 overall (evidence 55/100, safety 84/100, hype gap 60/100). Leucine metabolite marketed for muscle preservation; evidence is mixed and strongest in older/untrained contexts, not magic bulking.
Full ingredient file
This page is a short answer. Mechanisms, dosing notes, sources, and the rest of the verdict live on the hub for HMB (β-hydroxy β-methylbutyrate).
Open HMB (β-hydroxy β-methylbutyrate) verdictOther questions on HMB (β-hydroxy β-methylbutyrate)
A few more focused pages for the same ingredient (we keep lists short on purpose).