Hi, I'm new here. I'm having a weird experience with Wellbutrin, and am wondering if others have had this experience too. I've been taking it for about 3 years. Sometimes it seems to work and sometimes it doesn't. I always take the same dosage, but for the last week or so, I feel like I've been taking a double dose. I feel jittery, anxious, I have trouble sleeping, my hands really shake. I've checked my pills, and I am definitely taking the prescribed dosage. Has anyone ever had that experience, where after awhile, your medication feels twice as powerful?