I think that it is prescribed for just that reason sometimes....to smooth out the edges. Didn't I read that you are just starting the guanfacine? Perhaps as you ramp up, you will see improvement in rebound. I know a few children have an afternoon dose (small) for more day long coverage.
Chase has never had rebound issues, so I have no personal experience with it in that regard.
You would have to use an after school dose of guanfacine to help with rebound. It is most effective 6-8 hours.vickie39229.0446527778We used a small dose of ritalin after school for a while to help with rebound on a long acting stimulant. It worked well for the rebound.