Not sure what the OP is about. A person who needs an IV started is usually a choleh sh’yesh bo sakana in which case, what’s the shaileh? Are you speaking about folks who take regular infusions like for chemo?
If a person is not really sick, just very hungry or thirsty, maybe feeling a little head-achy, An IV is cheating. Yeah, it lo c’derech achilah but, c’mon! It says v’anisem es nafshoseichem. your supposed to feel a little crummy.
Another real cheat I’ve heard is coffee fiends using caffein suppositories to get their “fix”.