What does IV mean on a prescription?
IV means intravenous — given directly into a vein, through a cannula or drip. It is the fastest-acting route.
- Means:
- intravenous
- Type:
- How to take it
- Also written:
- iv, i.v., IV
What it means in practice
Because an IV dose reaches the circulation immediately, it is used in emergencies, for fluids, and for medicines that would be destroyed by the stomach. IV medicines are given in a clinical setting and are often switched to PO once someone improves.
Example on a prescription
Furosemide 40 mg IV STAT
Give one 40 mg dose of furosemide into a vein immediately.
Commonly confused with
- IMIM is into a muscle and absorbed over minutes rather than instantly.
- POPO is by mouth. An IV-to-PO switch is a common step as someone recovers.
Frequently asked questions
What does IV mean in hospital?
Intravenous — the medicine or fluid goes directly into a vein, usually through a cannula.
Why switch from IV to PO?
Once someone can absorb medicine reliably by mouth, oral dosing is safer and simpler — no line, lower infection risk, and often discharge home.
Related abbreviations
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This page explains prescription notation for general information. It is not medical advice and does not replace your prescriber or pharmacist. If a label is unclear or differs from what you were told, check with your pharmacy before taking the medicine.