Essentially, all carnitine forms enhance the mitochondrial use of fatty acids. The advanced forms of L-Carnitine, namely, Acetyl-L-Carnitine, Propionyl-L-Carnitine, and Acetyl-L-Carnitine Arginate, are significantly more potent than simple L-Carnitine in terms of fat-loss and anti-aging benefits.
Acetyl-L-Carnitine produces superior mitochondrial modulation of fatty acids. Dosage recommendation is between 1 000mg and 2 000mg per day.
Propionyl-L-carnitine is a form of carnitine that has a special affinity for heart muscles, producing potent effects in cardiac and skeletal muscle, producing significant improvements in energy and stamina. Dosage recommendation is around 1 000mg daily.
Combining the two should produce excellent results. If your budget does not permit this, you might prefer a combination of base L-Carnitine and ALCAR (PLCAR has its key benefit in the cardiovascular realm).
As you know, ALA co-supplementation is a must, as Alpha Lipoic acid turns out to be a natural co-factor for a mitochondrial enzyme crucial in the break down of fatty acids. This enhances cellular energy efficiency. Furthermore, lipoic acid is a powerful antioxidant that enhances intracellular levels of vitamin C and glutathione, powerful antioxidants on their own.