If you are asking about the injectable medicine interferon which was not IV or intervenous but rather just under the skin or sub cutaneous theat medicine is seldome used anymore for hep c there are now new medicines for hep c that are all in pill form but which one of the new medicines is partly determined by what genotype of hep c you have and also your insurance company may prefer one type of medicine over another type.
Where do you live are you in the US?