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  • Helps Support Muscle Strength
  • 3g of Calcium Beta-hydroxybutyrate Beta-methylbutyrate Monohydrate (HMB) Per Serving
  • 3 Capsule Serving Size
  • **Product Packaging Information under Product Overview

Product Overview

Helps Support Muscle Strength

HMB is a metabolite of the amino acid, leucine. Every capsule contains 3g of pure HMB.

**Product Packaging Information

Please note due to Covid challenges, we have faced supply chain constraints sourcing packaging components for our products. As a result, packaging cap and bottle colors may vary, temporarily, across some of our products. Despite these challenges, we are here to help you stay stocked with your favorite Optimum Nutrition products to support your fitness goals. Rest assured that these variances affect packaging only, it does not affect the product inside. We are still delivering the same high-quality products backed by 35 years of the highest quality standards. Thank you for your understanding during this time.


  • 3g of Calcium  Beta-hydroxybutyrate Beta-methylbutyrate Monohydrate Per Serving

  • 3 Capsule Serving Size

  • Supports Muscle Strength¹

Suggested Use

As a dietary supplement, take 3 capsules daily. Intended for use in healthy adults as part of a healthy, balanced diet and exercise program.

Nutritional Information

Nutritional information will be shown when a flavour and/or size is selected.

Customer Reviews

Overall Rating (5.0)
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Review by Anonymous on Sep 3, 2023
Verified purchase
Awesome supplement!

HMB a big Plus

Review by Wayne on Aug 11, 2023
Verified purchase
As a 64 year old and just getting back into the weights after a couple decades off, I'm optimistic I can still put a decent amount of muscle back on. Using both HMB and Creatine I'm delighted with the results so far and motivated to keep going.

Didn't know I needed this

Review by Johnny on Jul 8, 2023
Verified purchase
I've noticed my muscles stay in size even when my diet and exercise routine goes down hill.

New hero

Review by Candice on Mar 28, 2023
Verified purchase
I have been taking them consistently for about three weeks now and feel that they are producing even greater results than creatine alone as far as strength and muscle growth. I wish they weren’t in the form of three pills but they seem to be effective so I’ll take them, ha!

Excellent quality

Review by Keith Anderson on Feb 22, 2023
Verified purchase
It works what else could you ask for? ON is the absolute best!


Review by Robert Swindle on Oct 24, 2022
Great product to help support muscle strength. My muscles have definitely increased in size from using HMB. Will definitely be buying again!

HMB capsules

Review by Bobby on Aug 24, 2022
I have only been taking the HMB capsules for a couple of weeks but I already feel stronger with a quicker recovery time. I believe this supplement will really help me going forward!

Excellent source for recovery

Review by John on May 29, 2022
Take it on a daily basis


Review by Johe on Apr 30, 2021
this is super good I recommend it

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