Optimum Nutrition BCAA Review

Optimal health requires a combination of a balanced and healthy diet and an active lifestyle. 

Getting a balanced and healthy diet with the right amount of nutrition is, in reality, not easily achievable. Our body needs a lot of nutrients which mostly we can get from foods. But getting all the required nutrients is not attainable with only food because we cannot consume so much food. 

One of the essential nutrients our body needs are amino acids. Amino acids come in different forms. One of the forms of amino acids is called Branched-Chain Amino Acids or BCAAs. 

BCAAs are essential amino acids that can only be obtained from foods such as eggs, dairy products, meat, legumes, nuts, soy. And the human body cannot make BCAAs on its own.

Some of the benefits of BCAAs are increased muscle growth, decreased muscle soreness, reduced exercise fatigue, and prevention of muscle wasting or breakdown. So, these BCAAs are important not just for your immune system but also for your active lifestyle.

Optimum Nutrition, a company that manufactures nutritional products and is known in the sports nutrition and supplement industry, has developed its Optimum Nutrition BCAA Capsules to support athletes and fitness enthusiasts with their daily BCAAs needs. They are also behind the best-selling protein powder, the Gold Standard Whey Protein

In this Optimum Nutrition BCAA review, we’ll talk about its pros, cons, and features. We have also gathered some customer feedback from different websites to help you decide if this is worth trying. 

Interested to know further? Keep scrolling to know more! 

TLDR: Optimum Nutrition Mega Size BCAA Supplement Overview

Product Description

Optimum Nutrition BCAA is composed of leucine, isoleucine, and valine amino acids in a ratio of 2:1:1. The BCAA capsule aims to supplement the daily BCAA requirements of your body to support your active lifestyle. 

leucine, isoleucine, and valine are three of the nine essential amino acids the body needs but cannot make. 

Leucine builds and repairs muscles, Isoleucine improves muscle metabolism and stimulates muscle tissues. In addition, it strengthens your immune system. Lastly, Valine promotes muscle growth and regeneration.

The three BCAAs form the building blocks of proteins in the body essential in muscle growth and creating a good muscle mass.

Further, Optimum Nutrition BCAA increases energy and endurance, hence your performance, while preventing muscle breakdown and soreness.

[You might also want to read: Ideallan BCAA Review

Key Features

  • Conveniently delivered branch chain amino acids: Leucine, Isoleucine, valine that helps support muscle growth and recovery
  • With optimal BCAA ratio (2:1:1)
  • New look but offers the same trusted quality 
  • Available in instantized BCAA powder and BCAA capsule form 
  • Available in various sizes 


  • Supports active lifestyle
  • Manufactured by one of the most trusted brands when it comes to the sports nutrition and supplement industry
  • Made in the USA 
  • Easy to swallow capsules 
  • The capsules do not contain any artificial flavors, sweeteners, or colors 
  • If you have a hard time swallowing pills, you have the option to take instantized powder form
  • The powder form is available in orange flavor, fruit punch, and unflavored 
  • Keto-friendly 
  • Affordable


  • Not for vegan, kosher and halal because of its gelatin content 
  • No other extra nutrients; provides only pure BCAA 
  • You may need to take a lot of capsules to achieve a good dose of BCAA which is 7 to 10 grams. 

Interested? Here’s the link to purchase! 

In-Depth Review: Optimum Nutrition BCAA


Sizes available: 60 capsules, 200 capsules, and 400 capsules 

Serving Size: 2 capsules 

Product Dimension: 2.88 x 2.88 x 5.09 inches (Based on 200 caps) 

Item Weight: 5.3 ounces

Nutrition Facts

Per serving of Optimum Nutrition BCAA 1000 caps contains the following:

BCAAs : 1000 mg

L-Leucine: 500 mg

L-Isoleucine: 250 mg

L-Valine: 250 mg

Other Ingredients:

  • Gelatin – capsules are made of gelatin that is manufactured from the collagen of animal skin or bone
  • Microcrystalline Cellulose – used as binding, filling, and bulking agent. This helps increase the weight of the capsule. 
  • Magnesium Stearate – considered as “flow agent”. This helps prevent products from sticking during the production process.

How to use

Take 2 capsules of Optimum Nutrition BCAA caps between meals, 30 minutes before workout or intense training, or immediately after workouts. 

For best results, take together with protein powders — Gold Standard Whey Protein or Serious Mass, or Gold Standard Pre-workout drink. 

What Do People Say About It?


With a very good rating on Amazon, here are some reviews written by customers about the Optimum Nutrition BCAA: Great Product, Great Price. – “ON Nutrition once again delivers a quality product at a very affordable cost. Wouldn’t recommend this product for anyone who has any issues taking pills. Each serving (2 pills) is 1g total, so the total pill count you would be taking throughout the day is kinda up there, and you’d want to split the dosages up throughout the day. Typically I get between 10 to 15g a day (depending on if it’s a rest day or not) which totals around 30 BCAA pills, not including my other pre-workout/vitamin supplements (with everything, I’m taking almost 50 pills a day) but I have no issues with pills so I don’t mind it.

Recovery time has been reduced to nothing since I started taking these. I noticed some change right away but didn’t notice the full effect until a few days of full dosages. I’ve also used their power in the past, but I think I like the pills more. Whichever you choose, ON Nutrition is the way to go.”

Another wrote: Works Very Well and Consistently – “This is my third purchase of this product. I used it off and on over the years as part of my workout nutrition plan. My body is sensitive to supplements so I normally use half of whatever the recommended dose is, or do two half doses morning and evening. I ran out of this supplement and did not replace it, but kept my same workout routine which is quite strenuous with mostly body weight lifting, slow, concentration, and jump rope. What I noticed is that within a month I lost about 10 lbs of muscle (from ~180 to ~170) due to the level of exertion and I can only eat so much during the day. I started back taking the BCCA tablet once in the morning before my workout with my breakfast 30g protein shake, and another right after the workout with my protein shake, and within a week (just 7 days), I can clearly see the gains in solid muscle mass and definition in my body that fast. The idea of using the BAAC to spare my muscles during my intensive workout, and ‘feeding’ my muscles with another tablet right after the workout is really paying off. My body is not sore, but I feel that my body is more muscular, stronger, tighter which feels great. Even though I am taking 1/2 of the suggested dosage, my body is responding very well.”


Barbend is one of the popular Youtube channels on sports nutrition. In one of its videos, it reviewed Optimum Nutrition BCAA caps. 

Here is a summary of what Barbend says about the product.

  • The 2:1:1 ratio of leucine, isoleucine, and valine is a standard in the industry.
  • Optimum Nutrition BCAA is really inexpensive which is its biggest advantage.
  • It is super convenient because it is portable. 
  • It is free of artificial colors, flavors, artificial sweeteners, and gums that people avoid.
  • It is not the most convenient way to take BCAA because of its serving size.

Another Youtube review from the Bodybuilding Singapore channel. It says that Optimum Nutrition BCAA is ideal for bodybuilding. It is highly preferred for muscle building and recovery. In the video, he has also shown his before and after photos after taking the instantized BCAA powder. 

The Verdict: Should You Buy It?

Would we recommend Optimum Nutrition BCAA? Well, yes. Optimum Nutrition BCAA is an effective and no-frills BCAA supplement. 

Optimum Nutrition BCAA contains the standard ratio for BCAA supplements which is 2:1:1 leucine, isoleucine, and valine. These BCAAs will support your active life with increased energy and endurance.

Optimum Nutrition BCAA has an essential role in your muscle-building journey. It prevents muscle breakdown and soreness during exercise. Plus, it supports muscle recovery in between and after your workout and stimulates a good muscle mass.

Further, Its brand is well-known and has proven itself in high-quality nutritional products, whether powder or capsule, in the sports industry for more than three decades. Its GMP and NSF certification supports such.

And with its reasonable price, why not give Optimum Nutrition BCAA a try.

Safety Information

This is for informational and educational purposes only. As with any dietary supplement, These statements have not been evaluated by the food and drug administration. 

Note that these products are intended for healthy adults over 18 years old. If you have a suspected medical condition, are nursing, pregnant, or considering pregnancy, you should consult a qualified healthcare professional prior to using this product. 

I hope you find this review helpful! If you like this article, make sure to check out our other articles at ExpertFitness.org

Nathan Lloyd, MSc

I’m a personal trainer, based in Boulder, Colorado.
I service clients physically in the Boulder area, mainly in the ONE Boulder Fitness Gym, but am also available for online consulting and coaching.

If you’re interested in my personal coaching programs, please contact me via the contact page.