If you're shopping at Naps, everything is good to go. He isn't going to carry fakes that would mess up the solid rep he has created from years of delivering good products. Personally, I have been using Geneza Sust 270, off and on. Great version of Sust and the MCT oil base is thin, allowing me to use a 25g needle, no problem. Not to mention, it's brewed well and causes little to no pain for me.