Ingredient
L-Isoleucine
What is L-Isoleucine?
L-Isoleucine is one of the branched-chain amino acids, which are essential nutrients the human body cannot produce on its own. It is typically obtained through dietary sources such as meat, fish, and eggs or through supplements.
L-Isoleucine is primarily used in dietary supplements and certain enhanced beverages for its role in muscle metabolism and energy production. Scientific studies suggest it may support muscle repair and recovery, although the evidence is mixed and more research is needed to confirm these effects.
When you see L-Isoleucine on a label, it's often an indication of a product aimed at fitness enthusiasts or those looking to support their protein intake, especially in the context of recovery from exercise.
Commonly found in: dietary supplements, protein powders, energy drinks, meal replacements, sports nutrition products
Benefits
- L-Isoleucine is essential for protein synthesis and muscle repair.
- Studies suggest it may help support energy levels during exercise.
The FDA considers amino acids like L-Isoleucine to be generally recognized as safe (GRAS) when used in accordance with good manufacturing practices.
Research suggests benefits for muscle recovery, but evidence is mixed and more studies are needed.
L-Isoleucine can be synthesized from non-animal sources and is suitable for vegan diets.
Sources: Amino Acids Overview
Scout's take
Part of BCAAs. Free-form branched-chain amino acids supporting muscle protein synthesis and recovery.
More from Scout's analyses
Part of Added BCAAs. Free-form branched-chain amino acids supplementing the plant protein blend; helps offset the lower per-serving leucine content of plant proteins.
from the analysis of PlantFusion Complete Protein Creamy Vanilla BeanFound in 3 products
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