Propionyl-L-carnitine HCL is an amino acid that is naturally produced in the body. It is related to two other compounds called L-carnitine and acetyl-L-carnitine.In fact, the body can convert L-carnitine to propionyl-L-carnitine HCL and acetyl-L-carnitine. But, no one knows whether the benefits of carnitines are interchangeable. Until more is known, don't substitute one form of carnitine for another.

It is used for treating leg pain (intermittent claudication)  during exercise due to poor blood circulation (peripheral vascular disease, PVD). PVD is often caused by diabetes or “hardening of the arteries” (atherosclerosis). And also used to treat congestive heart failure (CHF).Men with sexual performance problems (erectile dysfunction, ED) due to diabetes or poor circulation sometimes use it along with prescription medications. Older men who have symptoms of low testosterone levels sometimes use it in combination with acetyl-L-carnitine.

The propionyl-L-carnitine HCL /acetyl-L-carnitine combination is also used to treat chronic fatigue syndrome (CFS).

Healthcare providers give it intravenously (by IV) for treating chest pain (angina),inflammatory bowel disease(including crohn disease and ulcerative colitis).moreover,it can helps the body produce energy,it is important for heart function ,muscle movement,and other body processes.

It seems to help increase circulation too.