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L-Leucine
$27.00
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- NUTRITIONAL & INGREDIENTS
- PRODUCT INFORMATION
- WHY VPA IS SUPERIOR
- VPA GUARANTEE
- REVIEWS
NUTRITIONAL INFORMATION
SERVING SIZE 2g SERVINGS 100
| Per Serve | Per 100g | |
| Energy (kJ) | 34 | 1,700 |
| Energy (Cal) | 8 | 406 |
| Protein (g) | 2 | 100 |
| Total Carbohydrate (g) | 0 | 0 |
| Sugars (g) | 0 | 0 |
| Total Fat (g) | 0 | 0 |
| Saturated Fat (g) | 0 | 0 |
| Sodium (mg) | 0 | 0 |
| L-Leucine (mg) | 2,000 | 100,000 |
Directions
Add 2g to 200ml of water or juice. Stir for 5 seconds, or until completely dispersed.
RECOMMENDED DOSAGE:Take 1-2 times per day ideally 30 minutes prior to training.
Ingredients
L-Leucine.
HOW VPA'S LEUCINE OPTIMISES YOU
Leucine is recognised as the primary amino acid in charge of muscle growth and repair through its ability to effectively promote protein synthesis. Protein synthesis is a ‘holy grail’ of muscle growth, as this is what professional bodybuilders are trying to achieve when they take more potent substances. L-Leucine has a long history of scientific literature supporting its anabolic effects in the body.
LEUCINE QUICK FACTS
- Increased Protein Synthesis.
- Increased Lean Muscle Development.
- Faster Recovery and Cellular Repair.
- Strong Anti-Catabolic Properties.
WHY VPA IS SUPERIOR
We take quality seriously, that is why VPA® is used and trusted by Australia’s top athletes. Almost 25,000 independent positive reviews show you whoAustralians prefer and trust.
THIRD PARTY LAB TESTING
Unlike other supplement providers we take extreme measures to ensure our supplements are the highest quality in the market, employing third party lab testing by the National Measurement Institute, the authority for Australia’s chemical, biological, physical and trade testing.
GLOBAL QUALITY ASSURANCE TESTING
VPA® is one of few supplement companies that has been certified by Informed Sport the world leader for supplement quality assurance, and tested by LGC’s world class sports anti-doping lab.
PRODUCT GUARANTEE
We are so confident that you will love our supplements we have a product guarantee that ensures you are happy with your product.
CERTIFIED WAREHOUSES ACROSS AUSTRALIA
Because we have ISO and HACCP certified warehouses in Brisbane and Melbourne, we are able to get your Whey Isolate to you faster than the majority of the supplement companies,
with the highest level of hygiene possible in Australia.
No more cheap and nasty unregulated supplement providers sending you products that are packaged in unhygienic back rooms, with low accountability of quality, full of fillers and poor quality dairy products.
THE VPA GUARANTEE
100% PRODUCT SATISFACTION
If you are not 100% happy with your product, please contact our customer service team to have the product returned for an exchange. Please make sure that at least 90% of the product is returned.
100% PRODUCT PURITY
We guarantee the purity of our product. Why, because we pack and blend all of our products on our HACCP approved, ISO approved facility in Brisbane, QLD, Australia. We regularly test the purity of our products so you can be confident that you will never be receiving under-dosed or amino-spiked supplements from VPA® Australia.
Who Should Take L-Leucine?
This Leucine supplement for muscle growth works well for:
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Strength and power athletes building lean muscle.
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Gym-goers who want faster recovery between sessions.
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People in a calorie deficit trying to preserve muscle mass.
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Older adults focused on preserving muscle tissue and reduce age related loss.
- Anyone looking for a targeted leucine amino acid to add to their existing stack.
Why Choose VPA® L-Leucine?
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100% pure - no fillers, proprietary blends, or hidden ingredients.
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Blended and packed in VPA's HACCP and ISO certified Brisbane facility.
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Third-party tested by the National Measurement Institute for purity.
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Certified by Informed Sport for anti-doping assurance.
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Trusted by over 25,000 independent positive reviews from Australian athletes.
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Vegetarian-friendly formula.
FAQs
What is L-leucine?
One of the three BCAAs (the others being isoleucine and valine), and the most studied for its ability to activate the mTOR pathway. That pathway kicks off muscle protein synthesis - which is how your muscles repair and grow.
What does an L-leucine supplement do?
A lot of people know what a Leucine supplement is, but not what it actually does. In simple terms, it gives you a concentrated hit to switch on protein synthesis, speed up recovery, and support muscle development. It works best alongside consistent training and balanced nutrition.
How does leucine support muscle protein synthesis?
Leucine activates mTOR (mechanistic target of rapamycin), a pathway that basically tells your cells to start building protein. Among all amino acids, leucine is the strongest trigger for this.
Is Leucine supplement effective for muscle growth?
Paired with resistance training and enough protein, a Leucine supplement for muscle growth helps you recover faster and train more consistently. Those two things compound over time into real gains.
Can L-leucine help reduce muscle breakdown during training?
It can. L-leucine has anti-catabolic properties, meaning it may slow the rate at which your body breaks down muscle protein during heavy sessions. This is especially useful during tough training blocks or calorie deficits.
What is the difference between leucine and BCAAs?
BCAAs are a group of three: leucine, isoleucine, and valine. Leucine is the standout for activating protein synthesis. The other two contribute more to the energy and recovery side.
Is taking leucine alone better than a BCAA supplement?
Depends on your goal. If you're after the muscle-building signal specifically, standalone Leucine powder is targeted and cost-effective. A BCAA mix gives you broader support from all three amino acid supplements working together.
Does whey protein already contain enough leucine?
Whey is one of the richest natural sources. But adding a separate Leucine supplement for muscle growth helps you consistently reach the leucine threshold required to fully activate MPS - useful when meals fall short on protein, or you train fasted.
When is the best time to take leucine powder?
30 minutes pre-workout or straight after training with a protein source. Between meals works too.
How much L-leucine should I take per day?
Between 2g and 4g daily, spread across 1–2 serves. That lines up with research on effective protein synthesis support.
Should leucine be taken on training days only?
No. Rest days count too - your muscles are still recovering, and leucine helps you along that process.
Can I stack L-leucine with creatine or protein powder?
Absolutely. L-leucine pairs well with protein, creatine, and pre-workout - no issues there.
Is leucine powder suitable for fasted training?
Yes. At just 8 calories per 2g serve, VPA’s Leucine powder primes protein synthesis without meaningfully breaking your fast.
Is L-leucine safe to take daily?
Yes. It occurs naturally in protein-rich foods, and daily supplementation within recommended dosages is well-tolerated.
Who should avoid using a leucine supplement?
Those with kidney issues, liver disease, or who are pregnant or breastfeeding should check with a healthcare professional first.
Is VPA L-Leucine suitable for vegetarians and vegans?
VPA® L-Leucine is vegetarian-friendly. Check the label for vegan suitability details.