BCAAs (branched-chain amino acids) are generally available in flavored forms, such as powder or tablets, which may contain sweeteners to improve their taste. The sweetness in BCAA supplements typically comes from artificial sweeteners like sucralose, acesulfame potassium, or stevia.
These sweeteners are added to BCAA supplements to make them more palatable and to improve their overall taste. However, it's worth noting that some people may be sensitive to certain sweeteners or prefer unflavored supplements. In these cases, unflavored BCAA supplements may be a better choice.
It's also important to note that the sweeteners used in BCAA supplements are generally safe for consumption, but some people may experience side effects such as digestive issues or headaches. As with any supplement or food, it's important to pay attention to your body's response and talk to a healthcare professional if you have any concerns.