NutraBio · HMB · Capsules

Is NutraBio HMB 1000 mg underdosed?

1 serving = 2 capsulesDirections: 3 servings a dayLabel as of 21 May 2025 · NIH DSLD

Verdict

3 g a dayas the label directs · studies use 38 mg/kg/day of HMB

Effective dose

Taken as the label directs (3 servings a day, 1 g each), it gives 3 g a day; studies use 38 mg/kg/day (2.85 g at 75 kg). Studies dose it by bodyweight; this uses 75 kg.

One capsule gives 500 mg, so reaching the low end of what studies use (2.85 g) takes 5.7 capsules a day; it ranks 2nd of 10 HMB supplements here by dose.

6 capsules a day reach 2.85 g at 75 kg.

What the label says

HMB per serving
1 g in 2 capsules
Servings a day
3 servings a day
HMB a day, as directed
3 g
Research dose
38 mg/kg/day Evidence: Moderate
Suggested use: Take 1 serving (2 capsules) 3 times daily with meals.
The label's directions, as printed.

More about HMB: forms, timing and the studies behind the dose.

Same category, compared

All 10 HMB supplements we checked, ranked by dose (commission never changes the order). Studies use 38 mg/kg/day of HMB; servings counted to 2.85 g.

ProductPer servingServings to reach itForm
Micro Ingredients Pure HMB Powder1 g2.9Powders
NutraBio HMB 1000 mg (this product)1 g2.9Capsules
Optimum Nutrition HMB 1000 Caps1 g2.9Capsules
NOW Sports Double Strength HMB 1000 mg1 g2.9Tablets
NOW Sports HMB 500 mg1 g2.9Capsules
NOW Sports HMB Powder770 mg3.7Powders
Double Wood HMB 1,000 mg1 g2.9Capsules
Nutricost HMB 1,000 mg1 g2.9Capsules
BulkSupplements HMB 1000 mg Capsules825 mg3.5Capsules
BulkSupplements HMB Powder825 mg3.5Powders

Where the reference doses come from

  1. HMB, 38 mg/kg/day: Kerksick et al., 2018; Wilson et al., 2013.
  2. Label data: National Institutes of Health, Office of Dietary Supplements. Dietary Supplement Label Database, 2026. https://dsld.od.nih.gov/. Label 329383, including its servings a day.

For a supplement taken every day we judge the most the label's directions give in a day, and show the least. Read the full methodology or the corrections log.