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2018's 10 Best
L-Leucine Supplements

L-Leucine For All Your BCAA Needs

L-Leucine is an amino acid that many who are concerned with their fitness find incredibly important. L-Leucine is usually found in BCAA products and, if you look carefully, it is usually the main ingredient found in BCAA supplements. BCAA’s generally have three different amino acids in them and L-Leucine is usually the largest in the ratio because studies have shown L-Leucine to be the most efficient of these amino acids in aiding in fitness.

L-Leucine is known mainly for it’s ability to stimulate the mTOR pathway, which is responsible for protein synthesis. This Muscle synthesis is the process used to absorb protein in order to repair and build bigger, stronger muscles. L-Leucine has some secondary effects on the body as well. For example, L-Leucine has been found to help aid lower blood glucose levels. If you want a high-quality L-Leucine supplement, look no further than our top 10 list of L-Leucine products.

#1 - Nutricost L-Leucine

The Standout: High-Quality, Easily Mixed, Best Value For Low Cost

Nutricost L-Leucine ranks #1 due to its lab tested, high quality instantized L-Leucine. Each scoop delivers a potent 5 grams, with each bottle providing a generous 100 servings. While other L-Leucine supplements have a tendency to clump and mix poorly, Nutricost's L-Leucine dissolves instantly for a smooth addition to any pre or post workout beverage.

Key Points:

  • 5 Grams L-Leucine
  • 500 Grams Per Bottle
  • 100 Servings Per Bottle
  • 20 Cents Per Seving
  • Boosts Protein Synthesis
  • Maximizes Muscle Growth
  • Best Tasting L-Leucine
  • Highest Mixability

L-Leucine is one of three branched-chain amino acids which plays a vital role in the growth and recovery of muscle mass, by stimulating protein synthesis via activating the mTOR pathway at lower concentrations, and at higher concentrations preserving muscle. Perfect for the athlete or individual looking to build or maintain muscle composition.

However, the cost of Nutricost's L-Leucine is the real drive home when it comes down to it. For $20, you get unbeatable quality that can be dose controlled to your preference.

For more reviews head to Amazon, where Nutricost's L-Leucine has climbed it's way to the top as the leading L-Leucine supplement. See other 5-star reviews from satisfied customers! Keep Reading »

#2 - Pro Supps L-Leucine Matrix

The Standout: Addition Of HMB And HICA, Best Price Vs Competitive Products, Safe

Coming in at a close second is Pro Supps' L-Leucine Matrix, which provides 3 grams of L-Leucine per serving, with the addition of the metabolites HMB and HICA for the most powerful muscle building formula. This powerhouse combination ensures maximal muscle growth in a safe, legal formula designed with one goal in mind: Build Muscle Fast. We especially recommend this product when trying to conserve muscle while reducing fat.

Key Points:

  • 3 Grams L-Leucine
  • 1.5 Grams HMB
  • 500 Mg HICA
  • 20 Cents Per Seving
  • Maximizes Protein Synthesis
  • Extreme Muscle Building
  • Innovative Ingredient Blend

L-Leucine is the only amino acid that can stimulate protein synthesis directly, which allows the body to be in a constant state of muscle building and preservation, while blocking muscle breakdown. HMB is a metabolite of Leucine, and is especially vital in inhibiting muscle breakdown. HMB is a substrate involved in Cholesterol synthesis, which is necessary for muscle cell shape and integrity. When muscle cell is damaged from exercise related exertion, the cell needs to repair the membrane before hypertrophy can occur.

HICA is another metabolite of Leucine. HICA has also been found to have anti-muscle breakdown effects, and been shown to be effective at reducing muscular soreness and boosting lean muscle mass.

If it's rapid muscle growth and recovery you're looking for, whether bulking or cutting, Pro Supps L-Leucine Matrix is an industry leader in L-Leucine supplements. Keep Reading »

#3 - CoreSeries BCAA Glutamine

The Standout: Clean And Pure Quality, High Dosage, High Efficacy

Transparent Labs' CoreSeries BCAA Glutamine goes above and beyond most repair and recovery supplements, with 5 active ingredients. Each serving is backed with a clinically chosen blend, including 8 grams of BCAA in a 2:1:1 ratio with 5 grams of Glutamine, and 1 added gram Coconut Water extract for hydration support. That's a total of 13 grams Amino Acids in every scoop. You'd be hard pressed to find those numbers in the average BCAA supplement.

Key Points:

  • 8 Grams BCCA
  • 4 Grams Leucine
  • 5 Grams Glutamine
  • 1 Gram Coconut Water
  • Boosts Muscle Recovery
  • Supports Electrolyte Balance
  • Clinically Backed Ingredients
  • No Added Sweeteners or Dyes

Simple and straightforward, Transparent Labs carefully chooses scientifically backed ingredients for efficacy. Leucine, Isoleucine, and Valine are the three most essential branched chain amino acids that work synergystically to promote protein synthesis. L-Leucine and Valine activates the mTOR pathway, while Isoleucine acts as an anti-catabolic by reducing the rate of gluconeogenesis which halts muscle breakdown.

The addition of Glutamine makes BCAA Glutamine even more ideal, since Glutamine reduces the rate of Leucine oxidation, meaning more Leucine is available for triggering protein synthesis. This allows you to get every bang for your buck, ensuring that BCAA Glutamine is one of the most efficient BCAAs on the market today.

To top it off, this transparent formula contains zero dyes, no artificial colors, and no artificial preservatives, making it clean, simple and effective. Designed to stimulate protein synthesis, boost glucose metabolism, and minimize fatigue, CoreSeries BCAA Glutamine enhances overall performance. Keep Reading »
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#4 - Gym Vixen BCAA

The Standout: Designed With Women In Mind, Amazing Taste

Gym Vixen's BCAA was specifically created for women, formulated with 6 Grams of BCAAs in the optimal 2:1:1 ratio. What really sets BCAA apart though is the inclusion of Casein (in the form of the PeptoPro Matrix), HICA, and additional minerals along with Vitamin B6.

Key Points:

  • 6 Grams BCAA
  • 2:1:1 Standard Ratio
  • 3 Grams Hydration Complex
  • 1000 Mg HICA
  • 2 Grams Casein
  • Additional Minerals
  • Best Tasting BCAA
  • Boosts Performance

Casein Hydrolysate enhances amino acid availability by increasing the incorporation rate of dietary amino acids into skeletal muscle protein to ensure faster absorption and usage. Delivered in the form of Peptopro, each molecule is so minuscule that no digestion is needed, allowing for the fastest absorption rate possible.

HICA, or alfa-hydroxyisocaproic acid, is a metabolite of the amino acid Leucine, and may be effective in binding the waste buildup that occurs during protein breakdown post exercise. It has been associated with both increased lean muscle mass, as well as a decrease in muscle soreness

Offered in two mouth-watering flavors, this is no ordinary 2:1:1 BCAA complex. Noted as one of the best tasting BCAAs on the market, some of our male readers might just be so inclined to try it too!

Keep Reading »
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#5 - Nutricost BCAA

The Standout: Highest Quality, Incredible Low Cost, Best Mixability

Why chose quality over quantity when you can have both? Nutricost's BCAA provides an unprecedented 83 servings per bottle, with only 23 cents per serving, of high-quality branched chain amino acids. Each scoop delivers 6 grams of L-Leucine, L-Isoleucine, and L-Valine to support muscle protein synthesis and muscle recovery, so you can boost muscle endurance and strength.

Key Points:

  • 6 Grams BCAAs
  • 500 Grams Per Bottle
  • 64 Servings Per Bottle
  • 23 Cents Per Seving
  • Enhances Protein Synthesis
  • Zero Calories
  • Best Tasting BCAA

If you're looking for a pure BCAA supplement with no additives or fillers, Nutricost's BCAAs more than delivers. This ideal 2:1:1 ratio provides twice the amount of Leucine, critical for activating the mTOR pathway and igniting protein synthesis.

This high quality BCAA also mixes well into beverages. Less chalky than the average BCAA, each scoop fully dissolves into water, juice, and shakes.

Free of calories, Nutricost's BCAA also comes in several delicious, fruity flavors, making it the best tasting BCAA on the market. At only $21, Nutriciost's BCAA is quite a steal! See what other customers had to say over on Amazon, and read the numerous 5-star reviews. Keep Reading »

#6 - MuscleTech Platinum BCAA

The Standout: Highest Amount Of L-Leucine In A BCAA Supplement

MuscleTech's Platinum BCAA is a powerful, potent formula that delivers a whopping 8:1:1 ratio of branched chain amino acids. That's 8 grams of Leucine per serving compared to the leading competitor's 6 grams per serving. The concentration of L-Leucine in MuscleTech's Platinum BCAA is a full 80%.

Key Points:

  • 8 Grams L-Leucine
  • 8:1:1 BCAA Ratio
  • 1 Gram Isoleucine
  • 1 Gram Valine
  • Enhances Muscle Growth
  • Boosts Recovery

Leucine is the BCAA with the highest muscle building potential, due to activation of protein synthesis through the mTOR pathway. With a high concentration of Leucine in every serving, Platinum BCAA enhances your mass building while minimizing muscle breakdown.

Platinum BCAA can also help speed recovery and enhance endurance, allowing you to get the most out of each and every workout, delivered in convenient and easy to use capsule form. Keep Reading »

#7 - Cellucor Alpha Amino

The Standout: Chalked Full Of Amino Acids, Heavily Focused On Hydration

Cellucor's 4th generation line Alpha Amino delivers 19 amino acids, including all three branched-chain amino acids to boost muscle growth, strength potential, and endurance, while minimizing muscular fatigue. Alpha Amino also promotes fluid balance, allowing for optimal muscle recovery.

Key Points:

  • 5 Grams BCAA
  • 14 Different Aminos
  • 3 Grams Hydration Complex
  • 2.5 Grams Alpha Amino Complex
  • 30 Servings Per Bottle
  • Maximizes Muscle Growth
  • Promotes Protein Synthesis

The most important BCAA for muscle synthesis is leucine, and Alpha Amino contains 3 different leucine forms to emphasize muscle recovery and repair. Alpha Amino sets an industry standard by delivering an advanced amino acid blend featuring hydration support. The revolutionary patented Hydromax is a glycerol that helps prevent dehydration during workouts, and provides hyperhydration by nearly doubling the volume of body fluid.

If you're looking for a sports drink without relying on stimulants, caffeine, or sugar, Cellucor's Alpha Amino is your go to. Keep Reading »

#8 - XTEND

The Standout: Advanced BCAA Formula

It can be difficult to conserve muscle when burning fat, but that is where Scivation's Xtend BCAAs step in. With 7 Grams of BCAAs including L-Leucine, L-Glutamine, L-Isoleucine, and L-Valine, each scoop enhances muscle growth and recovery. Topped off with a hydration complex and 1 gram of Citrulline Malate, boost BCAA benefits and support muscle hydration.

Key Points:

  • 7 Grams BCAAs
  • 30-90 Servings Per Bottle
  • Enhances Muscle Recovery
  • Boosts Protein Synthesis
  • Zero Calories
  • Zero Fillers

Xtend BCAAs helps support recovery between workouts, by giving a generous serving of vital branched chain amino acids, along with key electrolyte minerals such as sodium and potassium to support electrolyte balance. L-Citrulline Malate is also speculated to positively mediate leucine's trigger of the mTOR pathway, helping build muscle.

With Zero calories, sugars, and fillers, Xtend BCAAs is an obvious addition to any workout regimen to build your ideal physique.

Keep Reading »

#9 - GAT Essentials BCAA Powder

The Standout: Trust-worthy Formula, Great For Stacking

GAT's Essentials BCAA Powder formula contains a 5 gram clinically dosed serving of all three essential amino acids Leucine, Valine, and Isoleucine in a 2:1:1 ratio. This instantized powder mixes easily and comes unflavored for convenient stacking, promoting muscle growth and aid in athletic performance.

Key Points:

  • 5 Grams BCAAs
  • 2:1:1 Ratio
  • 50 Servings Per Bottle
  • Boosts Protein Synthesis
  • Enhances Recovery
  • Great For Stacking

GAT's BCAA powder is great for those who want an unflavored, no-frills BCAA supplement that can be added and customized to their stack. It doesn't get any more straight forward than this, and athletes of all level can benefit from the accelerated recovery from resistance training. Keep Reading »
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#10 - BPI Sports Best BCAA

The Standout: High-Quality, Great Tasting, Innovative Blend

Best BCAA goes above and beyond providing muscle growth and strength delivered by an ordinary BCAA supplement, formulated in a revolutionary and delicious blend.

Key Points:

  • 5 Grams BCAAs
  • 1 Gram CLA Matrix
  • 250 Mg Agmatine Sulfate
  • Boosts Fat Burning
  • Maximizes Muscle Growth
  • Great Tasting
Leucine, one of the main BCAAs in Best BCAA, increases protein synthesis in skeletal muscle, which maximizes strength, enhances endurance, and fosters more efficient recovery.

In addition to the three essential BCAAs, Best BCAA also features CLA, or conjugated linoleic acid, which has been shown to drastically improve body composition by simultaneously reducing body fat while boosting muscle growth.

Agmatine Sulfate boosts nitric oxide production and also promotes protein synthesis, boosting muscle growth and fighting fatigue during and post-workouts.

The combination of BCAAs, CLA, and Agmatine make Best BCAAs truly a powerhouse muscle building and recovery supplement. Keep Reading »

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