5 doctors weighed in:

How long does a bag of IV fluid last in your body?

5 doctors weighed in
Dr. Alvin Lin
Internal Medicine - Geriatrics
4 doctors agree

In brief: As long as you need

Our bodies are in a constant state of balance.
We keep what we need and get rid of what we don't need. This goes for water (fluid), too. If you're dehydrated & receive just 1 bag of fluids that isn't enough to replenish your stores, you'll hang on to that fluid more so than if you got a bag just for kicks (this should never happen when not dehydrated) in which case you'll pee it out within hours.

In brief: As long as you need

Our bodies are in a constant state of balance.
We keep what we need and get rid of what we don't need. This goes for water (fluid), too. If you're dehydrated & receive just 1 bag of fluids that isn't enough to replenish your stores, you'll hang on to that fluid more so than if you got a bag just for kicks (this should never happen when not dehydrated) in which case you'll pee it out within hours.
Dr. Alvin Lin
Dr. Alvin Lin
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