HMB

product on market Capsule MET-Rx Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 33% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Calcium B-Hydroxy B-Methylbutyrate (HMB) has moderate evidence for supporting muscle protein synthesis and reducing muscle breakdown. Calcium and potassium serve as essential electrolytes that support nerve function and muscle contractions. Research on HMB is most notable for its role in preserving lean mass during periods of stress or inactivity.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for HMB
Open Full PDF View on NIH DSLD →
Details

Label Data

4 Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
33%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Calcium
116 mg (12% DV)
Potassium
46 mg (1% DV)
Market median: 4002.0mg (1 products) 21 studies (A:0, B:2)

Other Ingredients

Rice powder Gelatin Magnesium Silicate Magnesium Silicate Silica Vegetable Magnesium Stearate
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

DIRECTIONS: For adults, take four (4) capsules three times daily, preferably with a meal. Do not exceed recommended dose. As a reminder, discuss the supplements and medications you take with your health care providers.

Warnings & Precautions

WARNING: Not intended for use by pregnant or nursing women.

If you are taking any medications, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur.

Not intended for use by persons under the age of 18.

TAMPER RESISTANT: DO NOT USE IF SEAL UNDER CAP IS BROKEN OR MISSING.

KEEP OUT OF REACH OF CHILDREN.

Formulation Notes

FREE OF: yeast, wheat, milk or milk derivatives, lactose, sugar, preservatives, soy, artificial color, artificial flavor, sodium (less than 5 mg per serving).

Additional Information

STORE IN A DRY PLACE AND AVOID EXCESSIVE HEAT.

>> Calcium B-Hydroxy B-Methylbutyrate Monohydrate

>>> THE REVOLUTIONARY SCIENCE OF MUSCLE MASS AND STRENGTH* <<<

• HMB is a metabolite of leucine, a Branched Chain Amino Acid. • Scientifically researched in combination with weight training and may help support strength levels and muscles.* Results may vary. Use in conjunction with an intense daily exercise program and a balanced diet including an adequate caloric intake.

7933 02B B7933 KZJ

Nutritional uses of Calcium B-Hydroxy B-Methylbutyrate Monohydrate (HMB) are licensed under U.S. Patent 5,348,979

Metadata

Product Details

UPC / SKU7 86560 07933 4
DSLD Entry Date2012-02-23
Product TypeOther Combinations
FormCapsule
BrandMET-Rx
DSLD ID6536
Data Updated2026-04-11
Research

Research Evidence

849
Research Sources
56
Avg Quality
450
Meta Analysis
152
Rct
137
Systematic Review
73
Clinical Trial
11
Regulatory Source
7
Other
7
Guideline
3
Openfda Safety
2
Cochrane Review
2
Observational
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025 PubMed DOI
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008 PubMed DOI
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023 PubMed DOI
A Dietary sodium, sodium-to-potassium ratio, and risk of stroke: A systematic review and nonlinear dose-response meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2019 PubMed DOI
A The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic review and meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2021 PubMed DOI
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.