Answer:
I weaken all men for hours each day. I show you strange visions while you are away. I take you by night, by day take you back. None suffer to have me, but do from my lack.
They're big and blue, and larger than seas
What divides by uniting and by dividing?
Never swallowed but certainly chewed, tossed in the mouth but it is not food. What is it?
The famous royal young lady who had several short men following her.
I am the same written forward backward and upside down.