I am currently taking 50,000IU of D3 Monday thru Friday. I have been on D2 50,000IU 3 times a week for several months and my level has gone from 14 ng/ml down to 10 ng/ml. Due to a rare cancer, I had a large section of distal ileum and ascending colon removed. This seems to be the consensus of why I'm not absorbing the pills. My endocrinologist decided it was time to try the Intramuscular injection but no pharmacy can be found that carries it and we even called the manufacturer who states they no longer make it. Do you know where I could obtain the injectable vitamin D? I'm desperate due to the many symptoms from the low level.