Creatine HCL works so well because adding the hydrochloride group to the Creatine molecule lowers the pH of the Creatine, making it more acidic. This drastically increases its solubility in fluids, which you will notice when you mix Creatine HCL in water. When considering the various types of Creatine, HCL is water soluble. That means that it is more easily absorbed into the bloodstream, which reduces typical side effects seen in other types of Creatine (bloating, digestive issues, and water retention).

Additionally, it may be used continuously without any detrimental effects, and there is no required loading period in order to build up its effectiveness.
Creatine is a naturally occurring chemical found within the body, normally in the muscles. It is also found in certain foods and may be obtained through supplementation. It is widely used among athletes in a wide range of sports for the primary purpose of improving exercise performance and increasing muscle mass.

It does not require a loading phase and calls for a significantly smaller dosage while still delivering the same benefits.