- Whey Protein: BCAAs are naturally present in whey protein, which is a byproduct of the cheese-making process. Whey protein supplements are one of the most popular sources of BCAAs.
- Soy Protein: Soy protein is a plant-based protein that contains all nine essential amino acids, including BCAAs. Soy protein supplements are a good option for vegetarians and vegans.
- Pea Protein: Pea protein is another plant-based protein that contains all nine essential amino acids, including BCAAs. Pea protein supplements are a good option for people with allergies or sensitivities to soy or dairy.
- Other Sources: BCAAs can also be sourced from other protein sources, such as egg protein, casein protein, and beef protein. However, these sources are less common in BCAA supplements.
It's important to note that the quality and purity of BCAA supplements can vary depending on the source and manufacturing process, so it's always a good idea to choose a reputable brand and look for a product that has been third-party tested for purity and potency.