Hi, I am bipolar 2. And before they figured that out, they thought it was depression and gave me prozac.
It did make me manic, till they added in lithium. Thats been going great for 15 years.
But recently during winter, I've had what my therapist thinks is GAD. I've never had rapid cycling bipolar so can't say about that.
Good luck. For myself, I'm hoping to try Buspar.