The science

HMB. 30 years.
Here's what that means.

HMB is a compound your body produces naturally from leucine. The amount it makes isn't enough to have a measurable effect. That gap is why supplementation exists — and why the dose in every serving matches what research actually used.

50+
clinical studies on HMB and lean muscle support over three decades of research
myHMB® research portfolio — myhmb.com
01
Supports lean muscle during caloric restriction
HMB helps the body hold onto muscle it would otherwise break down when calorie intake drops. The mechanism involves protein synthesis signaling.
02
Supports muscle recovery
Research supports HMB's role in reducing exercise-induced muscle damage — relevant for walking, gardening, or any structured exercise.
03
Particularly relevant after 35
As natural leucine conversion declines with age, the gap between what your body produces and what research suggests is meaningful grows wider.
04
myHMB® — the research-backed form
Not all HMB is equal. myHMB® is the most studied form, USP verified — the ingredient in every 4LIVN serving.




HMB — beta-hydroxy beta-methylbutyrate — is a compound your body produces from leucine. It plays a role in protein synthesis and muscle cell integrity. Your body makes only 0.2–0.4g daily from food, while research consistently points to 3g as the meaningful dose. That gap is why supplementation exists.

The format is the product decision. HMB works only when taken consistently — every day, over time. A capsule you forget or a powder you have to mix has a compliance problem built into the format. A chew you look forward to, that fits in your bag and requires nothing but opening a pouch, removes that friction entirely.

HMB is studied for its role in supporting lean muscle. Take six chews a day, consistently — that's the whole design. As with any supplement, talk with your physician about your routine.



myHMB® is one of the most clinically studied form of HMB, USP verified, with its own research portfolio. We chose it because the research behind the ingredient is the whole point.

We're not going to give you a timeline we can't stand behind. Research on HMB emphasizes consistent daily use over weeks and months. What most people notice first is the consistency itself — they actually take it every day, which wasn't true with other formats.

4LIVN HMB Fruit Chews are vegan and pectin-based — no gelatin, no animal-derived ingredients. Review the full ingredient panel for individual sensitivities and consult your healthcare provider with questions specific to your health.


Sour orange — and we mean actually sour, like candy-sour. The tartness comes from myHMB® Free Acid, the active ingredient in each chew — not from added flavoring. It's clean, not bitter, but it is consistently sour throughout. People who drink kombucha, eat tart cherry, or grew up on sour candy tend to love it. If sour isn't your thing, that's genuinely worth knowing before you buy.


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