Took last lot of sof and dac yesterday six months .got first three months sof and ribravirin from Greg jefferys from his guys in India ,then dac became available from mesochem so got 6grams sent to me found a compounding chemist here in NZ to put it into capsules .did last three months with sof and dac as I am 1a non responder back in 2010 f2 fibrosis I wanted to increase cure rate.iwas non detectable four weeks and they tested me every four weeks after that ,fingers crossed for the next 6months.side effects sleep was the only real issue good luck fellow heppas