Yes Em you are right, there are no problems with bringing the meds into New Zealand.
I have returned home today from Hobart and just breezed through customs. I do recommend that you carry a copy of your script and as an extra back up I had a letter from my specialist stating the medication are for personal use.
It appears that you can get Ribavirin in New Zealand with just a GP prescription but it is expensive.
I tried 3 Pharmacists, one didn't get back to me, one could get Riba + Peg-IF at NZ$2200 per month, one could get Riba at NZ$1300 per month.
It is much cheaper to import it.
GT1 F4 compensated, I/F non-responder 1997
@2015-11-06 VL 3.5 x 10^6, started Twinvir
@2016-01-29 started 2nd 12 weeks of Twinvir
@2016-03-01 ALT=42 AST=42, other LFT in normal range