SammieJane- I've had joint pain on it. I had joint pain before I went on it. I had joint pain when I came off HRT. I have occasional joint pain that I'm now back on it. So, the conclusion is ...I don't know what's causing it. And yes, I'm as sickened by it all as you seem to be. Sorry babe but I'm probably further down the line than you are and I don't have any answers. The only advice I can give is that maybe don't drive yourself round the bend trying to find out what the answer is? 😘