My Husband Finished His Harvoni Treatment Back In March 2015.

My husband finished his harvoni treatment back in March 2015. He had a liver transplant back in 2009 and was very sick. Had a bad infection had to be operated on again. Sick off and on the last few years, bowel obstructions, had pneumonia back in June and in ICU for five days...but he's been in a terrible depression. Was a depressed person anyway, but not like this. Family doctor put him on Prozac. He's 61 and retired. This depression is so bad and he's even kind of mean as well. Says mean things for no reason, swears, will go in bedroom and lay down for awhile, gets up and won't talk to me. It's a daily thing has been for months
Just wondering if he could be having a side effect from harvoni. I try to help but sometimes better I leave him alone.