80mg is above the recommended dose in the UK (20-60mg), but can be prescribed off label. If you've had some benefit from the prozac/fluoxetine then I'd consider trying 80mg. If you've had no improvement at all then I wouldn't bother and would ask for something else. As confused says, they're plenty more meds out there! And getting a T is a must, if you're able.

All the best,

*Willow*