New to Gabapentin want advice

I have  spondotheisis grade 1 and have had a disectomy and cage in my neck. I have pain in my hands, arms and lower back all the time at varying degrees.  I have been taking Naproxenn, tramodol, co drydomol for approx. two years and was worried about the side affects of taking these long term.  I spoke to my GP and he has prescribed Gabapentin as an alternative. I am a little worried about starting, is 300mg  very high does. What can I except when I start them and will it affect me working?

I am on 100mg of it and have been very dizzy and feeling sick. I've been on it for 4 days at 3 a day

Every person is different.  I've been taking Gabapentin for 11 years due to intense nerve pain in my legs and feet after a spinal chord fracture (L3) during an auto accident.  I started off at 600 mg three times a day but now take 1200 mg because my system has developed a tolerance to it.  While I've experience few symptoms, others have felt varying levels of feeling spaced out; some don't feel connected to their body; others feel worn out; yet others say gabapetin doesn't work for them.  You'll just have to try it out for a while to see how it affects you, if at all.  

Even though I've experienced no side effects since using Gabapentin, I'm still concerned about taking such a high dosage.  So, my doctor put me on Tramadol last summer so that I don't have to keep increasing Gabapentin dosage.  It was initially very effective and I reduced my Gabapentin dosage, but the Tramadol has gradually been less effective over the year.  What has been your experience with Tramadol? Any side effects? 

Mark when I took tramodol I experienced some of those symptoms you have spoken about. I felt very light headed , like I was drunk but would also feel sick, the pain would subside at first but then  it would return to a dull ache in the background again. I guess it just did not suit me.  I hope it goes well for you.  

Stump, did you start of slow? I am still un sure about taking it, I think it is going to depend on my level, it  varries from day to day.