EAA — Essential Amino Acids
EAA — Essential Amino Acids
What are EAAs and how do they differ from BCAAs?
EAAs (essential amino acids) are all nine amino acids the body cannot produce on its own: leucine, isoleucine, valine, lysine, methionine, phenylalanine, threonine, tryptophan, and histidine. Unlike BCAAs, which contain only three amino acids, an EAA complex provides all the building blocks needed for muscle protein synthesis. EAAs are especially beneficial during training and fasted workouts, as they deliver a complete amino acid profile without whole food.
Frequently asked questions about EAAs
EAAs are more effective for muscle protein synthesis because they contain all nine essential amino acids needed for building muscle. BCAAs alone cannot trigger complete protein synthesis because six amino acids are missing. If choosing one supplement, EAAs are the more versatile choice, especially when training fasted or with low protein intake.
The most effective time is during training (intra-workout) or right before exercise. This ensures amino acid availability exactly when muscles need them most. For fasted morning training, EAAs are especially important since amino acid levels drop overnight.
The recommended dose is 10-15 g of EAAs per training session, which roughly equals the amino acid content of 25-35 g of whey protein. On multiple-workout days, the dose can be split between sessions. EAAs can also be taken on rest days between meals to support muscle recovery and protein synthesis.
Yes, most EAA supplements are plant-fermented (typically from corn or sugarcane) and suitable for vegans. Check the product label to confirm certification. EAAs are especially valuable for vegans, as plant protein sources are often lower in one or more essential amino acids.