Avandia Oral /Rosiglitazone

Having done a lot of internet research on this drug, I hoped that a Diabetic specialist could enlighten me on the side effects of Avandia in relation to Aneamia.
All the documents I have read imply that the Aneamia is always mild.
Has anyone come across a moderate to severe aneamia as a side effect, and can anyone explain why aneamia should occur?
Also can you explain why this drug causes shaking, I am really try to understand the impact of this drug on patients 60+
Another question, how long after this drug has been stopped would one expect side effects such as aneamia and shaking to stop?
Thanks