Hi
Normally when you are seeing a doctor they give you a from to enter all the meds you are currently taking. Did you inform you liver specialist of all your medications?
Here is the FULL PRESCRIBING INFORMATION for OLYSIO it has the DRUG INTERACTION list on page 5 section 7
http://www.olysio.com/shared/product/olysio/prescribing-information.pdf
Here is the FULL PRESCRIBING INFORMATION for Sovaldi the drug interactions section 7 is on page 8
Good luck on treatment
Lynn
Personally I would avoid flagyl like the plague, but that's me.
You really need to talk to an informed doctor before you begin mixing these strong meds together.