The HMB 100 Caps supplement from Vitobest contains Beta-Hydroxy Beta-Methylbutyrate (HMB), a metabolite of L-Leucine, notable in sports nutrition for its ability to minimize muscle breakdown. It works by inhibiting protein degradation in muscle cells, resulting in better preservation of lean mass, especially during intense workouts or restrictive diet periods. It may also aid muscle recovery and has been shown to improve strength in some users.