Improving your physical performance is the top reason why people consume this supplement—using it before a workout has shown results in improving endurance too. It is also known to benefit the brain and the nervous system. Improving brain function is a third reason for using L-Carnitine. In other cases, consuming it was linked to positive changes in people who have Alzheimer’s, memory improvement, better attention span and enhanced visuospatial and constructional abilities. It is also supposedly good for weight loss, heart health, exercise performance, sexual drive in men and reduces type-2 diabetes.