Best HMB Supplement 2026: Ca-HMB vs HMB-FA, Ranked by Cost per Dose
Informational summary — not medical advice. This page ranks product value; on whether HMB is worth taking at all for your situation, see the hub, the trained-athlete evidence, and the muscle-loss niche. This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
HMB is sold as a calcium salt (Ca-HMB) and a free acid (HMB-FA). Ca-HMB powder is the lowest-cost way to reach 3g/day; we found no independent trial showing the premium free-acid form changes outcomes. Talk to your clinician before using HMB. Of the 6 products compared, Ca-HMB bulk powder runs $0.28/day, while the HMB-FA softgel runs $2.78/day — a 10.1x spread. BulkSupplements.com HMB Powder, Unflavored (250 g) is cheapest at $0.28/day; MuscleTech Clear Muscle (BetaTOR HMB-FA, 42 Liquid Softgels) is the priciest at $2.78/day.
As an Amazon Associate we earn from qualifying purchases. Ranked by cost per 3g/day dose, never by commissions.
The one-line takeaway Every product here discloses HMB content directly — the two differences are form (powder vs. capsule/softgel) and salt (Ca-HMB vs. HMB-FA). Ca-HMB bulk powder is the lowest-cost way to reach 3g/day. HMB-FA absorbs faster and higher (Fuller 2011); we found no independent evidence that this produces a different outcome.
Every product compared: cost per 3g/day dose
Sorted cheapest per dose first. Full data is a public CC BY JSON file.
| Product | Form | HMB type | mg/serving | Price | $/g HMB | $/3g dose |
|---|---|---|---|---|---|---|
| BulkSupplements.com HMB Powder, Unflavored (250 g) | Powder | HMB-Ca (calcium salt) | 1000 mg | $22.97 | $0.092 | $0.28 |
| Primaforce HMB Powder, Unflavored (200 g) | Powder | HMB-Ca (calcium salt) | 1000 mg | $18.50 | $0.093 | $0.28 |
| BulkSupplements.com HMB Capsules (360 ct, 3,000 mg serving) | Capsule | HMB-Ca (calcium salt) | 3000 mg | $23.96 | $0.133 | $0.40 |
| Nutricost HMB 1,000 mg (240 Capsules) | Capsule | HMB-Ca (calcium salt) | 1000 mg | $19.95 | $0.166 | $0.50 |
| Optimum Nutrition HMB 1000 Caps (90 Capsules, 3,000 mg serving) | Capsule | HMB-Ca (calcium salt) | 3000 mg | $39.57 | $0.440 | $1.32 |
| MuscleTech Clear Muscle (BetaTOR HMB-FA, 42 Liquid Softgels) | Softgel | HMB-FA (free acid) | 1000 mg | $38.99 | $0.928 | $2.78 |
Prices are Amazon buy-box figures from our last price check (the review date is shown below the table); they move. Cost per 3g dose = cost per gram × 3, matching the near-universal daily dose across the trials reviewed for this cluster.
Two things worth reading before you buy
Ca-HMB vs. HMB-FA is a pharmacokinetic difference, with no confirmed outcome difference. Fuller et al. 2011 reported that HMB-FA reaches peak plasma HMB in about 38 minutes vs. 128 minutes for Ca-HMB, at roughly double the peak concentration. We found no independent trial showing that faster or higher plasma HMB changes strength or muscle-mass outcomes.
Powder vs. capsule/softgel is mostly a packaging premium. The cheapest Ca-HMB powder (BulkSupplements.com) costs a fraction per gram of the Ca-HMB capsules (BulkSupplements, Nutricost, Optimum Nutrition) or the HMB-FA liquid softgel (MuscleTech) — convenience and, for the FA product, a patented delivery format, carry a real price premium. The Optimum Nutrition capsule is priced close to the HMB-FA product despite being the same cheaper Ca-HMB salt as the $0.28/day powder.
Third-party testing: mixed across this set
Testing claims vary by brand here — BulkSupplements' products state third-party testing or cGMP manufacturing and Nutricost states ISO-lab third-party testing, while Primaforce, Optimum Nutrition, and MuscleTech state no independently verified certification on the listing. HMB is a simple, well-characterized compound rather than a botanical extract with high adulteration risk, but if third-party verification matters to you, check each brand's current Amazon listing and Certificate of Analysis directly — certification claims can change between price-refresh cycles.
Verification check · HMB (β-Hydroxy β-Methylbutyrate)
What we could and could not verify about HMB (β-Hydroxy β-Methylbutyrate)
Not one of the 6 HMB (β-Hydroxy β-Methylbutyrate) products we track appears in the NSF, USP or Informed Sport registries. 3 of the 6 still advertise testing of some kind, wording those registries cannot confirm for HMB (β-Hydroxy β-Methylbutyrate). A “cGMP” line audits the factory, not the HMB (β-Hydroxy β-Methylbutyrate) bottle you would actually receive.
Method: our HMB (β-Hydroxy β-Methylbutyrate) roster matched against the full public registries of third-party-certified supplements in the US, NSF/ANSI 173, USP Verified and Informed Sport, 5,317 listings, retrieved 2026-08-25. Absence means nobody independent has checked that HMB (β-Hydroxy β-Methylbutyrate) product, not that it failed. Full method and limitations.
Frequently asked questions
What is the best HMB supplement?
Cheapest per dose: BulkSupplements.com HMB Powder, Unflavored (250 g) at $0.28/day — Ca-HMB bulk powder, a 10.1x spread vs. the priciest HMB-FA softgel.
What is the difference between HMB-Ca and HMB-FA?
HMB-Ca (calcium salt) is the older, cheaper, slower-absorbing form. HMB-FA (free acid) is a newer, patented, pricier gel/softgel form that reaches peak plasma HMB roughly 3x faster and at about double the concentration (Fuller 2011). We found no independent trial showing that this changes strength or muscle outcomes.
Which form did the Wilson 2014 trial use?
Wilson 2014 used an HMB-FA product at 3g/day. In this comparison, MuscleTech Clear Muscle (BetaTOR) is an HMB-FA product, at roughly 5x the cost per dose of the cheapest Ca-HMB powder. The trial’s effect size has not been independently replicated.
Why is powder so much cheaper than capsules or softgels?
You are paying for encapsulation, dosing convenience, and (for the HMB-FA product) a patented free-acid manufacturing process. Bulk Ca-HMB powder skips the per-dose packaging cost; capsules and liquid softgels cost more to produce per gram of active ingredient delivered.
Related
- HMB overview
- HMB dosage guide — 3g/day and the Ca-HMB vs. HMB-FA kinetics
- HMB research summary
- Best creatine — the sports supplement with the far deeper, independently-replicated evidence base
- Best BCAA
Sources
- Manufacturer labels and Amazon pricing for all listed products, verified July 19, 2026. Full dataset: /hmb/cost-by-brand.json (CC BY 4.0).
- Fuller JC Jr, Sharp RL, Angus HF, Baier SM, Rathmacher JA. "Free acid gel form of β-hydroxy-β-methylbutyrate (HMB) improves HMB clearance from plasma in human subjects compared with the calcium HMB salt." Br J Nutr. 2011. PMID: 21134325 (100% Metabolic Technologies Inc.-authored pharmacokinetics data).
- Wilson JM, Lowery RP, Joy JM, et al. "The effects of 12 weeks of beta-hydroxy-beta-methylbutyrate free acid supplementation on muscle mass, strength, and power in resistance-trained individuals: a randomized, double-blind, placebo-controlled study." Eur J Appl Physiol. 2014. PMID: 24599749 (funded by Metabolic Technologies Inc.).