The answer depends where you live. In Canada they are not classed as an opiate, but in the US, they are,,, unless this has recently changed.
My Doctor explained to me that while they are not a true opiate, they behave almost the same as opiate's do.
I took Tramadol for about 2 years and never found it hard to stop for a week here and there. I did this stopping to see if I would have withdrawal, but I didn't. However the pain came back and I would start taking them as needed. I found Tramadol to be fairly effective, but sometimes I added a couple of Advil or Tylenol as the pain was not as bad, but still there. This seemed to do the trick, but ask your Doctor first. My doctor gave me T3's with them as well, but I would usually try not to take them and when I did it was only one with a regular Tylenol as well as they are addictive! If you are not getting relief within about an hour, try the regular Tylenol or Advil as well and I think it will help.
I take a large dosage of Effexor for pain and over a two year period, I didn't feel any negative interactions between the antidepressant and the Tramadol.
After having pain for many years and trying most things available, I don't know of one that doesn't make you just a little drowsy and some I could not stay awake with. I didn't find this with Tramadol except for the first couple of weeks, but we are all different. Fibromyalgia makes you sleepy on it's own, so it could be that this isn't from the Tramadol or maybe you need a lower dose of it. I would suggest you talk about this with your Doctor and tell him/her your concerns.
With side effects, I only look at the first few as they are the most common and then look at the rare, but serious ones. If something feels wrong I go back and look to see if it's there. For most of us, once we read all of them, we start to look for them and I'm not saying your are imagining feeling tired, but perhaps you are more aware of it. I used to do this, but found I was much happier when I stopped.
I hope this has eased your mind somewhat and also hope some of it has been helpful. I wish you the very best and that you feel good again, Grace 721.