Hello, I've just joined this site. I've been on prednisolone following a diagnosis of polymyalgia in May. The daily dosage is 12.5mg. I've had trouble sleeping for many years, but now I just cannot get to sleep until 5 or 6 am. I'm physically tired but my brain won't switch off. I've read that insomnia is a side effect of prednisolone. Zopiclone/ zimovane don't seem to work. Has anybody found a way of overcoming this problem please?