Besides having plenty of water to drink and maybe some Tylenol on hand I wouldn't go out and spend much on things you more then likely will not need. I would guess before the sides set in your treatment will mostly be over being its just 12 weeks... Good luck to you.
My husband just started this treatment yesterday. He is genotype 1a too. So far he said he had a headache, I have been keeping his water glass full, he had a habit if not hydrating. Best wishes to you, we are all in it together.
I will be on week 6 tomorrow and really have had no side effects other than an off and on headache which isn't as bothersome as it was in the beginning. And a little fatigue, but that could just be because the dogs and I love a good afternoon nap. This is my 5th time treating and by far the easiest. Don't worry about being sick...as can-do-man and Faithdove recommended, drink lots of water and I suspect you'll get through the 12 weeks just fine. Oh and BTW, for the first time ever I am UNDETECTABLE ~ it's a wonderful feeling, Good luck to y'all!!!