Is it better to take L-Arginine by itself, or combined with L-Ornithine?? to improve blood circulation?

Question

why is L-Arginine, and L-Ornithine is combined?

Answer 1

Either one (L-Arginine alone or the combination) would be beneficial for increased circulation. Typically L-Ornithine is used more for the release of natural Growth Hormone, but it can help with circulation. L-Arginine is the main Amino Acid for circulation, though, so it will help with it regardless.