What other ingredients are commonly found in commercial creatine products?
There are many “creatine replacement” products available today. They are primarily marketed as “improved creatine.” The different forms of creatine and the validity of the rationale behind these products will be discussed later on. Following is an examination of some of the ingredients found in these products. L-arginine Arginine is an amino acid that has become popular as of late due to its ability to increase nitric oxide (NO) levels. There are also many derivatives that are advertised as being more effective. While the utility and safety of arginine is a subject of much debate, the general consensus is that it has limited ability to improve performance or alter body composition but offers a cosmetic benefit by increasing vascularity. In any case, L-citrulline or citrulline malate is suggested as an alternative (see below). L-citrulline Citrulline and citrulline malate are preferable to arginine, as citrulline has a greater ability to increase NO levels, and there is also more eviden
