My wife's dad had Hep. C. but he died of unrelated causes before we ever got to find out if the Miracle-Mineral-Supplement could have helped with the illness.
Other than that, I'm going to state that I believe there is good reason to conclude Miracle-Mineral-Supplement can and does interfere with certain medications or treatments(and vice-versa). For example, I've taken medications such as Bennadril and cortisone that clashed with Miracle-Mineral-Supplement (neutralized). Which seemed rather odd given how I understood MMS to work, but... since it was repeatable, I'd say the results were conclusive enough to warrant sharing. Whatever the case, the decision is ultimately yours on whether or not you feel its worth trying.
Having said that, if you plan on trying MMS for whatever reason, then I'd highly recommend you go the CDS route instead of MMS. Which is basically made from the same component as MMS(chlorine dioxide) without the side effects; nausea and vomiting, fatigue, pH & electrolyte imbalance, diarrhea etc. - With that in mind, I think the best approach might be to pick-up a single bottle from eBay from a reputable seller(w/good feedback) and run some trials. My guess is that you'll likely know early on if its helpful in any way.
PS. if you do decided to use CDS beyond trials, then I'd highly recommend you make it yourself. It's very easy and costs only pennies to make. Some of those people selling CDS on eBay are just plain nuts with their prices! - Then again... I guess they're acceptable for trials, but I wouldn't recommend buying this for long term use since it costs only pennies to make CDS anyways. - Either way, I'm not tying to tell you what to do or anything, it's entirely up to you in the end.
Alternatively... and I don't mean to overstep on other CureZone Forums here, but... have you considered the all raw food diet? I seem to recall reading(in the past) of numerous testimonials by Hep C. sufferers who found wellness with that particular diet?