Propionyl-L-carnitine is a chemical naturally made in the body. It’s related to two other compounds called L-carnitine and acetyl-L-carnitine.

Propionyl-L-carnitine helps the body produce energy. It’s important for heart function, muscle movement, and many other body processes. It also seems to help increase circulation.

People use propionyl-L-carnitine for chest pain, heart disease, heart failure, athletic performance, chronic fatigue, and many other conditions, but there is no good scientific evidence to support many of these uses.

Don't confuse propionyl-L-carnitine with acetyl-L-carnitine or L-carnitine. These are not the same.

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