I use crea supps creapure. I believe that all creapure is functionally identical, just 100% pure Creatine marketed and backed by some German company. Amazon feels so sketchy nowadays that I wanted something simple and not well known enough to counterfeit. Plus creapure has quality seal verification to minimize chance of fakes.

While checking for the brand I use, I now see that it is out of stock. That sucks, I will have to find another creapure soon