Answer:
I think your best bet is to call your local drug store.
In most cases, this combination is not recommended, since both tend to increase heart rate, blood pressure, etc.
That being said, I have been taking vyvanse30mg in the am, adderall10mg after lunch, and 300mgwellbutrin right before bed (seems to kick in right around the time I wake up, but that's not too common for most people.) The heart races a bit sometimes, and I have zero appetite, but I have razorfocus. The vyvanse is the most recent addition, and it seems to make me more jittery, and I'm getting some muscle/joint tightness. If I were to cut any of them, it would be the V. If I could only keep one, it would be the wellbutrin; the most effective drug for me so far. I would like to try biphentin, but my psych. doesn't know enough about it (just slow release ritailin).
cheers