haven't taken this but was prescribed carbamazepine for pain that was unresponsive to other drugs (although magnesium was a small help). It is also used for neuropathic path and was effective once it built up in my system. However I felt like a zombie, had nausea and suicidal thoughts at first and had to stop taking the supplements (like N-acetylcysteine) that were helping me improve. Luckily the pain went and I could wean myself off the drug.