I'm sorry to hear it lost its efficacy for you. That must have been so frustrating. Have you tried anything else since then that's worked? That's kind of how I feel now about Wellbutrin XL... when I first started it and when I upped the dosage, I felt so much more alert, "up," awake, energized... but all that leveled off and I'm back to sleeping 12–16 hours almost every single day. I hope you've found something that's working for you!