Most abundant amino acid in muscle tissue
Depleted during intense exercise—replenishment is key
Supports Muscle Recovery
Helps speed up muscle repair after strength and endurance workouts.
Reduces Muscle Breakdown
Preserves lean muscle mass during heavy training and calorie deficits.
Enhances Exercise Performance
Aids in reducing fatigue and supporting endurance.
Promotes Protein Synthesis
Essential for muscle rebuilding and strength development
Most abundant amino acid in muscle tissue
Depleted during intense exercise—replenishment is key
Plays a role in immune function, gut health, and cell hydration
1000 mg L-glutamine per capsule
Easy-to-swallow, unflavored capsules
Ideal for pre- or post-workout use
Trusted quality from Optimum Nutrition, a leader in sports nutrition
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Ratings & Reviews of Optimum Nutrition L-Glutamine 240 Capsules