Trimethylglycine, also known as betaine, is a naturally occurring compound found in various foods, such as beets, spinach, and whole grains. It is derived from the amino acid glycine and is recognized for its role in the metabolism of homocysteine, an amino acid linked to cardiovascular health. In addition to its potential health benefits, trimethylglycine is often used as a dietary supplement. It is believed to support liver function, enhance athletic performance, and improve overall energy levels. Research is ongoing to fully understand its effects and benefits in different populations.