 Vitamin C is absolutely critical for collagen generation. And if you are low on vitamin C, that's not optimal when it comes to making cartilage. And the idea behind JointGel is to do just that, to make cartilage, to grow cartilage, and as we're about to get into, to maintain cartilage. So with that said, Neil, we need to talk about the second ingredient in JointGel called MSM.