Drug orders PO "o.d."?

[missninaRN]

I'm doing a care plan based on a case study, and one of the meds listed is Lasix 80 mg PO, o.d.

What does "o.d." mean? I've read that it can mean right (or was that left?) eye, or overdose, but obviously it has something to do with frequency in this case.

Anybody know what it means? Could it be typo for q.d.?

[nurseprnRN, BSN, RN]

lasik is corneal surgery. lasix is furosemide, a diuretic, and it is available in an iv liquid form which is tasteless and can be given p.o., and often is given that way to infants and children.