NOW® Pure HMB Powder delivers pure Calcium β-Hydroxy β-Methylbutyrate Monohydrate with absolutely zero fillers, flavorings, or excipients. HMB is a key compound naturally formed inside your body in tiny amounts when you metabolize the branched-chain amino acid leucine. Its primary biological job is to signal your muscle cells to protect existing muscle tissue, slow down post-exercise breakdown, and speed up cellular repair. Whether you are lifting weights, running, or maintaining functional physical strength as you age, this pure powder provides completely customizable dosing that mixes effortlessly into your daily workout shake or recovery drink.
Quick Specs Snapshot
✓Active Form & Potency: 770 mg of active HMB and 130 mg of bioavailable calcium per 1/4 level teaspoon (approx. 1 gram), derived from clinically studied Calcium β-Hydroxy β-Methylbutyrate Monohydrate.
✓Primary Cellular Target: Inhibits the ubiquitin-proteasome pathway that breaks down muscle fibers while stimulating mTOR signaling to encourage lean muscle protein synthesis.
✓Supply & Value Math: Approximately 90 servings per container, offering the highest cost-per-gram value and eliminating the need to swallow multiple large pills every day.
✓Formulation Purity: 100% pure unflavored powder, patented myHMB® raw material, zero additives or excipients, allergen-screened, and packaged in an eco-friendly 100% post-consumer recycled (PCR) resin bottle.
Buyer's Guide: Why Pure Powder Outperforms Big-Box Bargain Formulas
Not all HMB supplements deliver the same quality or value. Many discount brands and big-box store formulas dilute their products with unpatented raw ingredients, flow agents, or artificial additives that reduce active potency and cause digestive upset. NOW® Pure HMB Powder utilizes genuine, patented myHMB® bound to elemental calcium. This stable powder dissolves smoothly, absorbs steadily in your digestive tract, and contains zero unnecessary fillers or binding chemicals.
Ideal For Shoppers Who:
✓Drink & Smoothie Creators: Anyone who already enjoys daily protein shakes, amino acid drinks, or pre-workout blends and wants to mix their HMB directly without swallowing pills.
✓Hard-Training Athletes & Lifters: Individuals who follow the clinically backed 3,000 mg daily intake and want the fastest, most cost-effective way to get high-potency muscle defense.
✓Active Agers & Calorie Dieters: Adults who want to preserve lean body mass during weight-loss diets or natural physical aging without consuming added capsules, sugars, or artificial chemicals.
Consider Another Option If:
✗On-the-Go Capsule Preference: You prefer pre-measured, portable pills you can swallow at work or while traveling without needing a spoon, shaker, or beverage.
✗Extreme Taste Sensitivity: Pure Calcium HMB has a mild, natural chalky/mineral flavor that is virtually unnoticeable in juice or smoothies, but may be detected if stirred into plain water alone.
✗Strict Dietary Calcium Restrictions: Anyone advised by their physician to strictly restrict calcium intake, as each 1/4 teaspoon serving naturally provides 130 mg of elemental calcium.
Every order is backed by VitaNet®, LLC's unconditional 100% money-back guarantee—even on opened bottles, with return shipping covered—allowing you to evaluate your physical progress with total peace of mind.
How HMB Works Inside Muscle Tissue Step-by-Step
Think of your muscle fibers like a brick wall that is constantly being worked on. Every single day, your body removes worn or damaged bricks (muscle breakdown) and lays down fresh new bricks (muscle building). When you exercise intensely, skip meals, or experience physical stress, your body starts pulling down bricks faster than it can replace them. While your liver naturally produces small amounts of HMB from dietary leucine, it converts only about 5% of what you eat. To get the 3,000 mg of HMB used in athletic studies from whole food, you would have to eat roughly 50 pounds of beef per day! NOW® Pure HMB Powder supplies this active compound directly to help keep your muscle wall strong through four specific mechanisms:
1. Slowing Down the Muscle Breakdown System
During strenuous exercise or calorie deficits, your muscle tissue activates a biological pathway called the ubiquitin-proteasome system. This process tags healthy muscle proteins and sends them into cellular "shredders" to be disassembled for emergency fuel. HMB signals your body to down-regulate this pathway, acting like a shield that keeps your muscle fibers intact (Nissen et al., Journal of Applied Physiology, 1996).
2. Activating the Muscle Protein Synthesis Switch (mTOR)
HMB does more than just prevent loss—it also acts as a biochemical "start" switch. It stimulates an enzyme complex inside your cells called mTOR (mammalian target of rapamycin). When mTOR is switched on, it instructs your ribosomes to take circulating amino acids and assemble them into brand-new structural muscle proteins (Wilkinson et al., The Journal of Physiology, 2013).
Hard training causes microscopic tears in the protective outer membrane of your muscle fibers, called the sarcolemma. Muscle cells cannot efficiently take up pre-formed cholesterol from your blood to patch these tears. HMB serves as a direct local building block for cholesterol synthesis right inside muscle tissue, rapidly repairing cell walls and significantly reducing post-exercise soreness.
4. Supporting Muscular Contraction & Bone Health
Because this pure powder is bound to calcium (providing 130 mg of elemental Ca2+ per serving), it delivers essential electrolyte support. Calcium ions are necessary for initiating muscular contractions and maintaining healthy bone mineral density, giving your physical framework complete functional support (Gallagher et al., Medicine & Science in Sports & Exercise, 2000).
Many discount big-box brands cut manufacturing costs by buying bulk powders from unverified overseas suppliers and skipping analytical testing. Independent laboratory audits frequently find that off-the-shelf bargain supplements contain heavy metals, agricultural pesticides, or degraded active content. NOW® operates one of the most advanced private analytical laboratory facilities in the world, certified under strict ISO/IEC 17025:2017 standards. Their team of over 150 chemists and microbiologists runs more than 19,000 separate tests every month to ensure complete purity:
✓ ICP-MS Heavy Metal Testing (Parts-Per-Billion Precision)
Every shipment of raw HMB powder is tested using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). This instrument detects heavy metal contaminants down to parts-per-billion (ppb) levels. Raw materials must pass safety limits that are far stricter than California Proposition 65 and United States Pharmacopeia (USP) standards for lead, arsenic, cadmium, and mercury.
✓ HPLC & UPLC Identity and Potency Verification
Using High-Performance Liquid Chromatography (HPLC) and Ultra-Performance Liquid Chromatography (UPLC), NOW chemists verify the exact molecular structure of the Calcium HMB compound. This guarantees that your powder delivers 100% of the stated 770 mg HMB yield per serving through its expiration date, with zero dilution or cheap fillers.
✓ 500+ Agricultural Residue & Solvent Screening
Raw materials undergo comprehensive Tandem Mass Spectrometry (LC-MS/MS and GC-MS/MS) testing to screen for over 500 pesticides, chemical herbicides, and synthetic solvent residues to ensure the powder is completely clean.
Every production batch is held in quarantine until detailed microbiological tests confirm zero presence of harmful pathogens, including Salmonella, E. coli, yeast, or molds. NOW facilities maintain an "A-rated" Good Manufacturing Practice (cGMP) registration from the Natural Products Association (NPA) and are third-party certified by UL Solutions.
Daily Dosing, Timing & Smart Supplement Synergies
Getting the maximum benefit from HMB powder requires regular daily use. Because this pure powder contains no fillers, it mixes easily into your existing routine:
How & When to Take
As a dietary supplement for adults, take 1/4 level teaspoon 2 to 3 times daily with juice or your preferred beverage. For intensive athletic training, taking 1/4 teaspoon 4 times daily (or 1/2 teaspoon twice daily) delivers approximately 3,000 mg of pure HMB, the exact amount used in clinical exercise studies.
Timing Strategy
On workout days, take 1 serving roughly 30 to 60 minutes before training to prime muscle tissue against breakdown, and take another serving immediately after training with your recovery shake. On rest days, divide your servings between morning and evening meals to keep cellular levels steady.
Smart Combinations & Spacing
HMB powder works synergistically with Creatine Monohydrate and Whey Protein to boost power and tissue recovery. If taking prescription thyroid medications or iron supplements, take your HMB powder at least 2 hours apart, as dietary calcium can bind with these compounds.
Timeline of What to Expect
Week 1 (Cellular Uptake): HMB begins saturating your muscle fibers. You will notice faster post-workout recovery and noticeably less severe muscle stiffness 24 to 48 hours after demanding workouts.
Weeks 3–4 (Strength & Stamina): Muscular saturation reaches steady state. Physical training feels more productive, high-rep sets cause less burning fatigue, and your muscles maintain fullness between sessions.
Months 2–3+ (Long-Term Preservation): Full cumulative benefits take hold. Lifters achieve solid lean mass retention during cutting phases, and older adults enjoy dependable protection against natural muscle loss, promoting active daily independence.
Powder Profile, Sensory Realities & Clean Formula
Here is an honest, firsthand guide to what you will experience when handling and drinking this pure powder:
Delivery Format & Dissolvability
This product is a fine, free-flowing, crystalline white powder. Because it is pure Calcium HMB Monohydrate without fillers or waxy lubricants, it stirs quickly into water, juice, or protein shakes with just a few turns of a spoon or a quick shake in a bottle. It leaves very little residue behind.
Natural Taste & Aroma
Pure Calcium HMB has a mild, distinctive, slightly mineral or chalky taste with no strong smell. While completely tolerable in plain water, mixing your 1/4 teaspoon into orange juice, tart cherry juice, an electrolyte beverage, or a flavored protein shake completely masks the taste.
Other Ingredients Demystified
Other Ingredients: None. That is the beauty of this formula. There are no anti-caking agents, no artificial sweeteners, no chemical flow agents, and no gelatin or plant capsule shells. You are paying solely for pure, active Calcium HMB.
Packaging & Storage Guidelines
This product is sold by weight, not volume. Natural settling will occur during transit. Keep the non-toxic freshness packet enclosed inside the jar to keep out humidity, and do not eat the freshness packet. Store the tightly sealed bottle in a cool, dry, dark location after opening. The jar is made of 100% post-consumer recycled (PCR) resin to block damaging light.
Supplement Facts & Retailer Verification
Complete label accuracy verified against official NOW® manufacturing specifications (Item #N2057 / NOW 2057):
Allergen Statement: Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut, or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Patent Notice: **myHMB® is a registered trademark of TSI Group Co., Ltd. U.S. Patent # 8,815,280, # 9,259,430, # 9,539,224, and # 9,707,241.
Safety Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children. Do not eat freshness packet enclosed.
Curator's Quality Note: Why Buy from VitaNet®, LLC?
Founded in 1995, VitaNet®, LLC is an independent, family-owned supplement provider located at 887 Edison Street Northwest, Hartville, Ohio 44632. Bringing over 31 years of hands-on expertise in human biochemistry and nutrition, we maintain rigorous quality standards that third-party mass marketplaces simply cannot match:
✓Direct Authorized Supply: We source inventory directly from NOW® Foods, guaranteeing genuine, untampered products with fresh expiration dates.
✓Climate-Controlled Storage: All powders and supplements are stored in temperature- and humidity-controlled warehouses so active ingredients remain potent and free-flowing.
✓A+ BBB Accreditation & Real Support: We have maintained an A+ Better Business Bureau rating for decades, with real customer service experts ready to take your call at 330-877-8786.
✓Unconditional 100% Money-Back Guarantee: If you are not completely satisfied with your purchase, we will refund 100% of your money and pay for return shipping, even on opened bottles.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Frequently Asked Questions
What is the advantage of choosing HMB powder instead of capsules or tablets?
Pure HMB powder provides superior value per gram and gives you complete dosing flexibility. Capsules require you to swallow 4 to 6 large pills every day to hit clinical amounts. With powder, you can easily stir your desired serving into a shaker bottle, smoothie, or juice without having to swallow any pills or ingest extra capsule excipients.
What does pure Calcium HMB powder taste like, and what should I mix it with?
Calcium HMB has a mild, chalky mineral flavor. Unlike free-acid HMB liquid which is very sharp and sour, Calcium HMB powder is easy on the palate. Mixing it into citrus juice (like orange juice), a flavored sports drink, or a protein shake completely masks the natural taste.
Will taking NOW HMB Powder break an intermittent fast?
No. Pure HMB powder contains zero carbohydrates, zero sugars, and virtually zero calories, so it will not cause an insulin spike or pull your body out of a fasted metabolic state. In fact, many athletes take HMB powder mixed into water or black coffee before morning fasted cardio or lifting to shield muscle tissue from being broken down for fuel.
Can I mix NOW HMB Powder directly with Creatine and Whey Protein?
Yes. In fact, combining HMB with Creatine Monohydrate and Whey Protein is one of the most effective muscle support combinations backed by sports nutrition research. Creatine replenishes immediate cellular ATP energy, whey protein provides the full amino acid spectrum to stimulate muscle building, and HMB prevents excessive muscle breakdown while accelerating post-workout tissue repair.
Why does this container feel partially empty when I first open it?
NOW® packages this product strictly by weight (approx. 90 grams), not by volume. Because fine powders settle naturally during shipping and handling, the powder level inside the jar may look lower than the rim. Every bottle is weighed electronically to ensure you receive the full stated amount.
