60 mg a day of Prozac is a lot. I was on it once and I think I was on 10 or 20. (I was on the lowest therapeutic dose.) If people are bipolar II and put on antidepressants, things can go very badly. IMO, as a humble person not of the medical community, it is far better to look into mood stabilizers or antipsychotics for certain people.
If you are diagnosed bipolar II after you start taking prozac - Get another doctor!
It is the drug a great deal of the time. Many of these same patients do fine on tricyclics and older antidepressants. However if you just like being on an SSRI, a major tranquilizer (tegretol etc) and later lithium just listen to the good doc. He has been trained by Eli-Lilly. He is the expert!