Ingredient

Valine

Neutral in 2

What is Valine?

Valine is an essential amino acid, which means the human body cannot synthesize it, and it must be obtained through dietary sources. It is one of the branched-chain amino acids (BCAAs), along with leucine and isoleucine, commonly found in protein-rich foods such as meat, dairy, soy, and legumes.

Valine is used in supplements for its role in muscle growth and energy production during physical activity, as it serves as a building block for protein synthesis. The scientific evidence is mixed on its efficacy in enhancing exercise performance or recovering from muscle fatigue, with some studies showing benefits and others noting no significant impact.

When you see valine on a label, especially in supplements and sports nutrition products, it is often positioned as part of a blend with other BCAAs to support workout routines or dietary protein intake.

Commonly found in: sports supplements, protein powders, meal replacements, energy bars, makeup

What to watch

High doses of valine supplementation can lead to an imbalance with other amino acids.

Benefits

Supports protein synthesis and muscle growth.
May enhance energy production during exercise.

FDA

Valine is generally recognized as safe (GRAS) as a food ingredient and supplement.

Research

Some studies suggest valine supports muscle recovery, while others show minimal effect.

Vegan

Valine can be sourced from plants and is suitable for a vegan diet.

Sources: Overview of Branched-Chain Amino Acids

Scout's take

Valine is an amino acid that helps to improve skin hydration and elasticity. It is used in formulations to support skin repair and regeneration. It is generally considered safe for use in skincare.