HMB 1000 Caps
Optimum Nutrition

HMB 1000 Caps , 1000mg/90 Capsules

BCAA Metabolite
Support Lean Muscle and Endurance*
8.5  out of 10  (76 Reviews)
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Product Overview

Research published in the Journal of Applied Physiology and other peer reviewed publications has suggested that HMB may have an effect on increasing muscle weight and strength.* Three grams of HMB per day can help highly trained muscles combat protein breakdown, assist in muscle repair and support increased endurance.*

Beta-hydroxy beta-methylbutyrate (HMB) is an important metabolite of the essential branched chain amino acid (BCAA) L-Leucine. Human and animal studies suggest protein breakdown and support significant increases in muscle strength and size when combined with intense resistance training (1,2,3)*

Optimum Nutrition's HMB Capsules are produced and packaged in our own state-of-the-art manufacturing facility. Each capsule provides 1000 mg (1 g) of pure beta-hydroxy beta-methylbutyrate (HMB).

Ratings & Reviews

HMB 1000 Caps
Overall Rating
76 Ratings
Verified Buyer Rating
21 Ratings
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Dec 19, 2018
Verified Buyer

By far one of the better products I have used. It will assist you in leaning out and preserving muscle, but you still have to put in the work and eating smart to see the difference. I saw a difference in one bottle (30 days) than I have on protein powder alone.

Sep 22, 2018
Verified Buyer


Aug 01, 2018

Not sure if it was this supplement but I started to get lean without trying to after taking this product

Sep 22, 2017
Verified Buyer

I've been taking this product for about 3 months now. I take one pill in the AM, one before going to the gym and another when I take my post protein shake. I'm one of those individuals which cannot take creatine due to my gout. So I was looking for something else for muscle recovery and increasing the benefits of my weight training. So far so good, no side effects and its a great addition to my supplement stack.

May 07, 2017

I guess i feel compelled to comment just in case others are considering taking this type of supplement. Although I have not bought Optimum's brand, I think people are confused or miss the point of taking HMB. You can preserve lean muscle mass very well with HMB, and gain strength because of your recovery. By far although HMB is one of the more expensive supplements I have taken 18+ years ago (i'm that old but don't look it) I can vouch it for the Endurance / Military / Cross Fit / Triathlon style athletes. HMB is a mainly IMO a recovery support supplement which is invaluable in preserving muscle mass especially during an intense shredding phase, or brutal physical training that causes muscle fatigue.

Apr 02, 2017
Verified Buyer

I've taken this off and on through out the year at least 3 months at a time. I've always liked this product stacked with creatine. Works great together.

Feb 16, 2016
Verified Buyer

METRX is better Value-Price, Other than that perfect

Apr 16, 2015
Verified Buyer

Had some great results with this product and will continue to keep it in my supplements list.

Apr 01, 2015
Verified Buyer

I'm only giving this an 8, b/c I'm not sure I'm seeing a difference in my post workouts or any type of strength building. I'll keep going, hope to "feel" or see a difference.

Mar 30, 2015
Verified Buyer

enjoying the change in body composition with the help of this

Sep 18, 2014

I noticed nothing from this product with 3g per day.

Sep 10, 2014
Verified Buyer

I never knew how much this expedited my recovery until I stopped using it. The difference is night and day. I am not sore for more than two days after absolutely killing it in the gym each time. I stopped taking it and that window extended to three to four days of soreness. You don't "feel" anything like some others complain about, but this is not a pwo, it's a recovery aid, and a very effective one at that. I used 3g per day total, split equally throughout the day.

Aug 06, 2014

Not 100% sure this is the cause of it ,but my recovery is crazy after a hard workout. I just began taking this brand after using another HMB while on a cut and have seen strength (not size) go up in the last two weeks.

May 07, 2014
Verified Buyer

I took this product out of curiosity. I was reading a few articles online about the effects of supplementing HMB and I thought I would give this product a try. During the time I took this product, I didn't feel any change in my training what-so-ever. I felt nothing actually. That may be due to my body reacting differently than what others have said. From what I've read online, I felt like what people were describing wasn't applying to me. Does this product work with "Them gainz?" I don't know. Maybe. For me, personally, I felt like nothing was different. I didn't feel any "gains" or "ROAR power" or anything. I won't be trying this product in the future. I felt nothing... but then again, that's just my body.

Nov 04, 2013
Verified Buyer
No written review.
1 Size
1000mg/90 Capsules
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Support Lean Muscle and Endurance*

What's in Optimum Nutrition HMB 1000 Caps

1000mg/90 Capsules
Supplement Facts
Serving Size1Capsule
Servings Per Container90
Amount Per Serving
Hydroxy Methylbutyrate (HMB) 1g *
(As Calcium Beta-Hydroxy Beta-Methylbutyrate
* Daily Value not established.
Other Ingredients:
Gelatin, Microcrystalline Cellulose, Magnesium Stearate.

Directions For HMB 1000 Caps: As a dietary supplement take 1 capsule 3 times daily with protein containing meals.

*Nutritional uses of B-Hydroxy B-Methylbutyrate (HMB) are licensed under patent no. 5,348,979.


Check with a qualified healthcare professional before using this product if you are under 18 years of age, pregnant or nursing a baby or if you have any known or suspected medical condition(s) and/or are taking any prescription or OTC medication(s).

* 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.
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