Thank you! I just completed the third month of Ibrance. I can't tell what side effects I can attribute to the Ibrance because I'm also taking anastrozole. I have acute gastritis and esophagitis and hypersecretion of acid. I don't know if it is from the treatment, the cancer or the fact that I cannot eat very much because I have metastasis in the lower two thirds of my stomach and it has obstructed the gastric outlet so I don't digest well and my stomach doesn't empty. I'm rapidly losing weight. Fatigue, nausea, headache and huge heartburn.