Goin on Harvoni with food for 11 weeks. taking pill on 19:45 (+/-15mins important to do this)in the middle of the dinner/main course(eat half plate, take pill and water, continue eating) and a glass water. with no problem/side effects at all. two times without any food or water i feel really bad(headache and so on). dont eat grapefruit(this big orange). I try with only sandwich and that is not enough to eat with pill.
This is my own experience taking Harv, and my doctors recommendation.