Hi Maddison, I have never been told and never have split my dosage of ropinirole XL slow release, I've always taken the 14mg all together and never had any problems.
I also get this tension pain in the back of my head when I am concentrating on something, like trying to peel potatoes believe it or not, just simple things like that! I don't actually get a headache it's just as you said unusual. My parkinson symptoms did a subside a little when I started on ropinirole, it was unbelievable, then I slowly had the dose increased, they have'nt all gone completly but it is in control. But my legs do feel heavy from time to time, especially when iv'e been out walking too long, and my left shoulder aches.
By the way I take my meds at about 10.30 every morning which is when I used to have my break at work, but now retired I still take them at same time.
All the best with your meds Sheila xx