Good morning thank you for following up. In my case I was taking gabapentin por my never/back pain, but I stopped taking it because I wanted to not take anything else (medication wise) only my Al medication. Also I stopped taking Letrozole, they switch me to exemestane. I feel great so far, no issues. Stiffness in the hip here and there very little, bloadeness here and there sometimes. So believe it or not once stopped taking both medications that went away. So I summing that it was gabapentin or Letrozole that was making me feel like that. How about you? Did you find out ?