- Helps Protect & Preserve Muscle*
- Supports Lean Body Mass*
Optimum Nutrition HMB helps support muscle strength with 1 gram of Calcium beta-Hydroxy beta-Methylbutyrate Monohydrate per serving. Optimum Nutrition HMB can help highly trained muscles combat protein breakdown, assist in muscle repair and support increased endurance.* Research has shown that HMB (Hydroxy Methylbutyrate) may have an effect on increasing muscle weight and strength.