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Why you love it...
“Probably the best amino, i wouldn't make a post workout shake without it" – Phil
Why we love it...
Leucine powder from The Protein Works™ is a premium grade amino acid scientifically shown to trigger new muscle growth. Sports scientists have found adding leucine powder to any protein shake dramatically increases its muscle building potential whether post workout or as a meal replacement.



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What is Leucine Powder?

Leucine Powder is part of the well-known muscle building group Branched Chain Amino Acids. They’re essential amino acids, meaning that our body cannot produce them in sufficient quantities, therefore we can obtain them from the foods we eat only.

Leucine is special because it turns on the muscle growth process. Think of it like the key to an engine. It can often be hard to get enough leucine through certain foods and there are times between meals we might want to keep the engine turning. This is why many athletes turn their heads toward THE PROTEIN WORKS™ for their leucine needs. Leucine has been shown to support muscle recovery and aide against fatigue, a real all-rounder in our eyes.

How does Leucine work?

Leucine is often a big player when it comes to the sports nutrition industry. From footballers to bodybuilders this Essential Amino Acid is fast becoming a favourite to anyone wanting to improve their body composition. Leucine Powder works by triggering protein synthesis in our muscles. Protein synthesis is the technical term for muscle growth. When muscle protein synthesis exceeds muscle breakdown, growth occurs..

What does Leucine Powder do?

Think back to the engine analogy, muscle protein synthesis is the motor and Leucine is the key. There is a threshold meaning more doesn't necessarily mean better, this can differ depending on the age and circumstance.

So if you’re asking - How much leucine to I need then we feel, 5g will be sufficient in all cases to get the engine on full power.

In addition Leucine can also contribute towards normal glucose levels as it stimulates the release of insulin. The addition to Leucine to your diet helps you to build lean muscle mass through increase protein synthesis and at higher levels of leucine consumption it has even been shown to protect your gains, acting as an anti-wasting agent even for those on a calorie controlled diet. To round up, leucine not only helps build muscle but also helps you maintain it for longer. Not bad for a little pouch of powder.

Why buy Leucine Powder?

Leucine Powder is perfect for anyone wanting to help maintain their hard-earned muscles, and help them grow as nature intended. You should consider purchasing this supplement for your stack if you're an avid gym-goer or even just a casual friend to fitness.

Given that plant-based foods contain low amounts of leucine, if you follow a meat-free diet leucine should also be considered. Not only has it been proven to help reduce muscle loss but also plays a key role helping to regulate blood sugar levels and contribute towards reducing recovery time from injuries as well as that dreaded muscle soreness after a hard session.

When is the best time to take Leucine Powder?

The best time to take Leucine powder is either 30-45 minutes prior to exercise or after exercise to help promote muscle growth and recovery. Taking it pre-workout or post-workout will ensure that your body has enough Leucine to trigger the muscle building process..

However, it is also essential to ensure that your body has sufficient amounts of Leucine to maintain throughout the day, so we would recommend that you consume Leucine Powder on average at the 3 main meals; breakfast, lunch, dinner on non-training days.

Who should take Leucine Powder?

The question should be, why haven't you added this to your basket yet? In short, everyone should be adding leucine powder to their diet. Whether this is adding it to a protein shake or consuming it through the essential amino acid blend by TPW™. If you're wanting a supplement that helps you gain and maintain muscle mass then you're on the right page! No matter your sex, weight or body goal, Leucine Powder is ideal for you.

What Other Amino Acid Powders Do You Stock?

We have an extensive Amino Acid Powder range all with their own unique benefits. Our Range include the following:

13 January 2016

Blends well with my shake and doesent taste chalky

29 September 2015

Love it
Don't have to say much

01 July 2015

Take this in my shakes,hides the taste

My referral code is RL81117 for free protein

05 May 2015

Great value for money
Ive decided to add this to my usual 2:1:1 ratio formula and its insainly cheaper than buying a 8:1:1 forumla.

01 April 2015

Great For Stimulating mTor
Leucine is a great product for stimulating mTor to kickstart the muscle growth process. This is an essential product for muscle growth and is in a high quality powder form directly from TPW.

I add it to my pre workouts and intra workout aminos to boost the content of Leucine due to it being the primary trigger of muscle growth.

10/10 Great product.

For Free Protein Use My Referral Code: JM15339

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Disclaimer: Customer reviews are independent and reflect customer's personal experiences. Individual results may vary. Products designed to be taken in conjunction with a balanced diet and training plan.


100% Leucine

Serving Size: 3g (one medium BLACK scoop)

We recommend consuming 2-3 grams twice daily. One serving 30-40 minutes pre-workout and one serving post workout.

Add one scoop to your desired amount of water or juice to your TPW™ Master Blender. Shake well and consume.

IMPORTANT: Before use, please check the included scoop is BLACK. If not, please contact us on 0845-4672411.


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Q. When should I use Leucine?

A. It depends on your lifestyle and goals, we recommend the following optimal serving times. Consume 2-3g up to 2 times daily or to suit your own individual needs.

Q. What are the main reasons for using Leucine?

A. To help preserve lean muscle tissue, provide the body with energy, and help to regulate blood sugar levels .

Q. What does Leucine taste like?

A. Leucine does have a bitter after taste, so we recommend you mix with juice or within a flavoured protein shake to make it more palatable

Q. Are there any specific health benefits associated with Leucine?

A. It has been reported that Leucine can help with prostate health.

Q. How can I tell if the Leucine I buy is good quality?

A. Look for the Certificate of Analysis which will give you the assurance that what you are buying is what it says it is.

Q. Is Leucine suitable for vegans and vegetarians?

A. No, it is not suitable for both vegans and vegetarians.

Q. Can I use Leucine with other supplements?

A. The simple answer is yes. We recommend you always check serving instructions on each product if you plan on taking a combination of supplements. Leucine is most widely taken alongside a good quality protein such as TPW™ Whey Protein 80 and Whey Protein 90.

Q. What if any side effects will I get from taking Leucine?

A. We haven't heard of any nasty side effects from taking TPW™ Leucine.

Q. What is Leucine?

A. Leucine is one of the three Branched Chain Amino Acids (BCAA), considered to be the BCAA that offers the most benefit to the body.

Q. Do natural whole foods contain Leucine?

A. Yes. All protein rich foods contain some amount of Leucine. Dairy products and red meat contain the highest amounts, as well as brown rice, beans, nuts and whole wheat.

Q. What effects should I expect from taking Leucine alongside my training regime?

A. Results vary depending on your diet, nutrition, training and individual body type. For an average individual, it helps to preserve lean tissue, and boost energy.

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