@scottevans , this seems to be a standard prescription drug for insomnia, https://www.nhs.uk/medicines/zopiclone/ . This drug does come with various warnings about side-effects and potential addiction problems. Have you considered some of the more natural remedies mentioned here :- https://www.mstrust.org.uk/life-ms/wellbeing/sleep ?

I used to find amitriptyline very helpful with sleep but it turns out that it has been responsible for some bladder symptoms. I'd rather have insomnia! So, yes, have a good read of the possible side effects, bearing in mind what I was told: the side effects tend to be worse the older you get..... I now use herbal tablets from time to time and a pillow spray, which seems to work. PM if you want details. Good luck, xk