Synopsis

Source of validity: Scientific
Rating (out of 5): 2

L-alanine is a non-essential amino acid that plays a role in energy production and amino acid metabolism, which has attracted some interest in the context of athletic and exercise performance. The rationale for its use as an exercise aid is primarily based on its involvement in the glucose-alanine cycle. During prolonged or intense exercise, muscles break down amino acids for energy, producing alanine as a byproduct. Alanine is then transported to the liver, where it can be converted into glucose, helping to maintain blood sugar levels and potentially delaying fatigue.

Scientific studies specifically examining L-alanine supplementation for athletic performance are limited and less robust compared to other amino acids like beta-alanine. Most of the performance-related research focuses on beta-alanine, which is well-documented to enhance muscle carnosine levels and buffer lactic acid. In contrast, clinical trials directly testing L-alanine’s ergogenic (performance-enhancing) effects are sparse and generally show minimal to no benefit for strength, endurance, or recovery in healthy individuals.

While the biological plausibility exists due to its role in metabolism during exercise, current evidence from human studies does not strongly support the use of L-alanine as an effective exercise aid. Its use in this context is thus based more on theoretical considerations rather than solid clinical data. Therefore, the evidence rating is low, and athletes seeking performance benefits are more likely to benefit from other, better-studied amino acids or supplements.

More about l-alanine
More about Athletic and Exercise Aids

Other ingredients used for Athletic and Exercise Aids

Other health conditions supported by l-alanine

Products containing l-alanine

Nature's Sunshine Blood Pressurex
Nature's Sunshine Free Amino Acids
Nature's Sunshine Sunshine Heroes Whole Food Papayazyme
Nature's Sunshine Sunshine Heroes Probiotic Power
Nature's Sunshine Men's X-Action Reloaded