"PHASE IV TRIALS: Post-marketing studies to delineate additional information including the drug's risks, benefits, and optimal use."
In other words, stuff that's already been approved.
thank you FIGuy. I've been surfing the net. Trying to get lucky. Being sick with the virus is a real drag.
play around with varying search criteria at clinicaltrials.gov. As a peice of criteria you might consider "hepatitis c'