How to quit smoking while taking dexamphetamine - Do slow release tabs make it easier

[Bovinepart]

Does anyone know if slow release Dexamphetamine (20 milagram) help with the peaks and valleys of 5 milligram Dexamphetamine that I take 2 of 4 times a day?
I am just wondering if I can get my Doc to put me on them, will it help me in my quest to quitt smoking...

I smoke and find that when I have a day without my meds I can go through the day easily without hardly thinking about having a smoke

But with the with the peaks and valleys I often have when I am on my meds I am itching for a smoke especially if I have left it a bit too long my next dose of DEX mainly due to my brain flittering (for want of a better word) and when I do have a smoke I find it levels me out so I can operate normally especially if I am buzzing a bit

Also I often find it hard with my work, dealing with customers and alike, removing myself to have my next dose when I should, which kinda doesn't help me to have a level headed day

kinda sux because I have tried going off DEX for a while, so I can quitt smoking and was reasonably successful (3 months) but not operating very efficiently and when I went back on the DEX the smokes came back too...