L-Glutamine
A conditionally essential amino acid key to gut integrity, immune support, and muscle recovery, especially under physical or metabolic stress.
L-Glutamine is the most abundant free amino acid in the body, vital for protein synthesis, gut lining health, immune function, and muscle maintenance. While the body usually produces enough, supplementation is beneficial during stress, injury, illness, or intense exercise.
Benefits are established for gut and immune health during stress and supported for exercise recovery, though effects in healthy, uninjured adults are more limited.
Supports gut barrier and intestinal health
ModerateL-Glutamine fuels intestinal cells and helps maintain gut lining integrity, reducing permeability especially in stressed or critically ill individuals.
Enhances immune function and immune cell fuel
ModerateActs as a primary energy source for immune cells, supporting immunity and reducing infection risk during physiological stress.
Assists muscle recovery after exercise or injury
LimitedSupplementation may reduce muscle soreness and accelerate recovery after intense exercise or trauma, though effects in routine sports are modest.
Conditionally essential amino acid during physiological stress
ModerateCan become essential when demand outpaces endogenous production during illness, burns, or heavy physical activity.
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