XL Nutrition HMB, 1000mg Per Day for Muscle Preservation During Cutting and Hard Training
XL Nutrition HMB Capsules provide 500mg of beta-hydroxy beta-methylbutyrate per capsule, with a recommended serving of 2 capsules per day for a total of 1000mg. HMB is a naturally occurring metabolite of the amino acid leucine, and it has been researched primarily for its role in reducing muscle protein breakdown (anti-catabolic effect) rather than directly building muscle.
The 120-capsule bottle provides 60 daily servings, lasting a full two months. The formula is minimal: HMB in HPMC capsule shells with silicon dioxide and magnesium stearate. No known allergens are listed. At one of the lowest price points for HMB in the UK market, it is a budget-friendly option for anyone who wants this specific ingredient in their stack.
HMB is most relevant during calorie deficits, cutting phases, or periods of high training volume where muscle protein breakdown exceeds normal levels. Research suggests it may help preserve lean muscle mass during these conditions. It is less studied for muscle-building effects in well-fed conditions, which is why it is typically positioned as a cutting-phase or dieting supplement rather than a general mass-builder.
Take 2 capsules daily with food. For best results, use consistently during cutting phases or periods of increased training intensity. HMB stacks cleanly with protein, creatine and pre-workout supplements without ingredient overlap. If you are in a calorie surplus and focused on building mass, products like XL BUILD or XL Turkesterone may be more relevant to your goals.