Is it a cure or a cause?

So now the Wellbutrin, which is meant to stop the migraines, is giving me migraines.

I'm on week four of taking the standard release variety and week one of non-stop--but very mild--migraine pain.  It's possible that switching to the extended release variety will change my reaction to the medication, so I'm going to try that next.

Meanwhile, I'm going to take 10 mg of Nortriptyline each night to fight these headaches.

I did some checking around the web, and most of the people who say that Wellbutrin gave them migraines also say that the headaches ceased after two to three weeks.

I hope I have the same experience.

Because I'd really like for this medicine to be a cure, not a cause.