I have been on Prozac (fluoxetine) for 8 mos. I am62 makes me nausea. How hard is it to make the transisition to try another antidepressant?

Not hard . It is easier to switch to another antidepressant from Prozac (fluoxetine) than most of other antidepressants. Talk to your prescribing doctor about switching. In the meantime you might try taking your Prozac (fluoxetine) with food to see if it helps. Good luck.