Most antidepressants carry a black box warning stating that they can cause suicidal ideation. However, a lot of researchers believe these suicidal thoughts come from the depression itself rather than the prescription drugs.

Moving on, when I first started Wellbutrin, I had the same euphoric feeling on the first day as well as a few vision issues and agitation. By the second day, I was back to my depressed self. Within a week, it started to kick in and I felt better. I transitioned off St. John's Wart onto bupropion (wellbutrin), so I was more or less without any antidepressant in my system for a few days.

If you're switching antidepressants, you can expect to feel depressed. You'll probably experience your depression plus withdrawl effects until the new antidepressant has kicked in.

Chances are, it will get better. Regardless, you should inform your doctor.