NOW Foods HMB 500 mg provides beta-hydroxy beta-methylbutyrate, a naturally occurring metabolite of the amino acid leucine that plays a key role in muscle protein synthesis and preventing muscle breakdown. HMB has been shown in clinical studies to support lean muscle gains, accelerate recovery, and help preserve muscle mass during caloric restriction or intense training periods. Each vegetable capsule delivers 500 mg of HMB as the free-acid form for optimal bioavailability.

HMB is particularly beneficial for older adults, beginners, and athletes returning from injury who want to protect and build muscle tissue.