Not really, with the exception of the nights I take a pre-workout (either n2kts or 1 RM) too late... then I do have issues and toss and turn for a few hours. But neither just the Alpha t2 and/or Forged Burner have caused any sleeplessness.
I am loving it too!! Been taking it about 2 weeks or so, but taken the weekends off just because i realized its only a 30 day supply and Orbit is all out!
Also dosing only 2 a day, some days I add a 3rd though if I need it.