HeHehenwas taking gabapentin for his back and then we went to er and they gave him robaxin he took them together for two days... Now he feels like he's haldf drunk he stopped taking it and this morning before we found out it reacted he took one 300 mg this morning at 8;30am and he needs a robaxin for his severe back pain would it be okay for him to take half of a robaxin till the gabapentin is out of his system tomorrow