Suffering leg cramps quite frequently, on prosac 40mg , risperidone 4mg. worth getting it checked?

Yes: May not be either drug but something else.

Yes: Both of these meds can cause something called akathesia, which is a discomfort in the legs often with a feeling of restlessness - like you want to move all of the time. Other medications and medical conditions can cause similar symptoms too, so it is a good idea to call you doctor and check this out.