SS-31 (also known as elamipretide) is a synthetic tetrapeptide research compound designed to target and protect mitochondria. It is being studied for its potential to improve mitochondrial function and reduce oxidative stress in preclinical models of age-related and degenerative diseases. SS-31 interacts with cardiolipin, a key phospholipid in the inner mitochondrial membrane, stabilizing mitochondrial structure and function. While promising in laboratory studies, SS-31 is strictly intended for research purposes and is not approved for human consumption or therapeutic use.