Without Gabapentin, I would be practically bedridden. I caused nerve damage to my back in April 2014 and was prescribed Gaba'. I was told to take 2 tabs 3 times a day.
The 'unusual' side effects started immediately. It makes me completely manic and I can't stop talking - thank God I have a dog, or else people would realise that I am indeed talking to myself!
Having been in chronic pain for well over 13 years, the doctors have shown mercy and have allowed me to stay on the Gaba', so that I can gauge the dosage myself and live as normal a life as possible. Being on Gaba' is the only way I can get anything done, since it gives me a compulsion to do things. It doesn't get rid of my pain, but it's necessary .
My side effect is so rare, it wasn't on the leaflet. Don't know if that's changed since I reported it to my doctors. Probably not. However, did find 'Mania' mentioned on an Americn site, so it's not 'unknown'.
Yes, Patsy is correct. It is well known for wiping out your short term memory. I used to have a memory like Stephen Fry, but now I struggle to remember lots of things, especially people's names and times to take my tablets, which is awful! I've invested in a pill dispenser that has an alarm/vibrate function and have found it to be a Godsend!