If you’re looking to build muscle, leucine is an essential amino acid that can help. It’s one of the three branched-chain amino acids (BCAAs), along with isoleucine and valine, and it’s found in abundance in many protein-rich foods.

Leucine has a few different roles in the body, but it’s best known for its ability to stimulate muscle protein synthesis, which is the process that helps repair and build muscle tissue.

While leucine can be taken as a supplement, it’s also found in many foods, including beef, chicken, pork, fish, nuts, and seeds. In this article, we’ll take a look at the top five best leucine supplements on the market and see how they compare.

1. BulkSupplements Pure L-Leucine Powder

BulkSupplements Pure L-Leucine Powder is a great option if you’re looking for a high-quality leucine supplement. It’s made from pure leucine, and each serving provides 2,500 milligrams of the amino acid.

This supplement is also free of fillers and additives, and it’s been third-party tested for quality and purity. It’s also vegan and vegetarian friendly.

If you’re looking for a leucine supplement that’s high quality and pure, BulkSupplements Pure L-Leucine Powder is a great option.

2. NOW Sports Nutrition, L-Leucine Powder

NOW Sports Nutrition, L-Leucine Powder is another great option if you’re looking for a high-quality leucine supplement. It’s made from pure leucine, and each serving provides 2,000 milligrams of the amino acid.

This supplement is also non-GMO, vegan, and has been third-party tested for quality and purity.

If you’re looking for a leucine supplement that’s high quality, pure, and vegan, NOW Sports Nutrition, L-Leucine Powder is a great option.

3. Jarrow Formulas L-Leucine

Jarrow Formulas L-Leucine is another great option if you’re looking for a high-quality leucine supplement. It’s made from pure leucine, and each serving provides 2,000 milligrams of the amino acid.

This supplement is also non-GMO and has been third-party tested for quality and purity.

If you’re looking for a leucine supplement that’s high quality and pure, Jarrow Formulas L-Leucine is a great option.

4. Nature’s Bounty Optimal Solutions L-Leucine

Nature’s Bounty Optimal Solutions L-Leucine is another great option if you’re looking for a high-quality leucine supplement. It’s made from pure leucine, and each serving provides 1,000 milligrams of the amino acid.

This supplement is also non-GMO and has been third-party tested for quality and purity.

If you’re looking for a leucine supplement that’s high quality and pure, Nature’s Bounty Optimal Solutions L-Leucine is a great option.

5. NOW Sports Nutrition, L-Leucine Capsules

NOW Sports Nutrition, L-Leucine Capsules is another great option if you’re looking for a high-quality leucine supplement. It’s made from pure leucine, and each serving provides 500 milligrams of the amino acid.

This supplement is also non-GMO and has been third-party tested for quality and purity.

If you’re looking for a leucine supplement that’s high quality and pure, NOW Sports Nutrition, L-Leucine Capsules is a great option.