I quit the GABAPENTIN....will try something else. HAD A RAPID HEARTBEAT FOR TWO HOURS, REFUSED the hospital here. HAD AN HALLUCINATION of someone in a fog looking at me in my dining room, chest pain went away after two hours. GABA is NOT FOR ME...flushed it....will live with the legatrim @ night and a couple of TYLENOL P.M. all day use the cane and I will ice the knee....SURGEON showed me a horrible metal stick with wheels on each side to FIX my knee...NO THANKS..I will take the chair when the time comes..AM 78 and FEISTY....thanks for asking M.A.