Ergothioneine (pronounced ur-go-thigh-uh-neen) is an amino acid derivative (specifically derived from histidine, which is an essential amino acid).  

When it comes to boosting energy, improving endurance, and supporting healthy aging, your mitochondria play a central role. As you age, though, mitochondria naturally become less efficient, making it harder for your body to produce energy.

Ergothioneine (ET) is a naturally occurring sulfur-containing amino acid emerging as a powerful nutrient in the fight against aging and...