Does flexril or skelaxin have any addictive properties in them.Do either efect the neurotransmiters?

I also take Skelaxin. I was given this due to severe back pain and my pain management doctor thought it would help. He is trying to do all he can to relieve my pain symptoms. I only take the Skelaxin every 8 hours as prescribed. The side effects for me, cause me sleepiness as the major symptom. I looked up this drug on the web and what I am reading says to watch out for mixing this medication with other medications. That could cause the addictive properties. Most drugs can be addictive when taken over a long period of time BUT don't quote me on this. I say this because drugs build up in your body over time. Sometimes the brain becomes accustomed to the affects and sometimes it needs more to accomplish the

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intended goal. Each individual is different and each brain process is different, so it depends on the individual. I did not read where Skelaxin can be addictive BUT I may have not read enough BUT when mixed with other medications, this could cause problems. I wear a Lidocane or Flexril patch on some nights when the pain is bad. The lidocane patch is worn for 12 hours but I do not wear it every night, only when the pain is bad. Skelaxin is a strong muscle relaxer. (depending on the dosage but I am taking 800mg). (add that 800mg 3 times a day and you can get a idea of the dosage) I am also taking Gabapentin (Neurotin which is supposed to calm down the stinging sensation in my legs) but when mixed with Skelaxin causes severe sleepiness and is NOT recommended (except in my case, my doctor knows about the drugs I take and I remind him often).
Check on the web about drug side effects and when used with other medications which can be harmful. Do the research and you gain the knowledge is the best answer I can do...