suero
/SWEH-ro/
IV fluid

Suero is often used to refer to the IV fluid used for medical hydration.
suero(noun)
IV fluid
?medical hydration through a tube
,saline solution
?medical salt water
serum
?medical or cosmetic liquid
,electrolyte drink
?rehydration drinks like Pedialyte
📝 In Action
El enfermero le puso un suero para la deshidratación.
B1The nurse gave him an IV for dehydration.
Tienes que tomar suero oral para recuperarte.
A2You need to drink oral rehydration salts to recover.
💡 Grammar Points
Masculine Noun
Since it ends in -o, it uses 'el' or 'un'. It follows the standard pattern for most Spanish nouns.
⭐ Usage Tips
Not just for hospitals
In many Spanish-speaking countries, people use 'suero' to refer to electrolyte sports drinks or rehydration liquids you buy at the pharmacy when you're sick.

Suero also means whey, the liquid that remains after making cheese.
suero(noun)
whey
?the liquid left after making cheese
buttermilk
?sometimes used loosely for the liquid from butter
📝 In Action
Para hacer queso, hay que separar la cuajada del suero.
B2To make cheese, you have to separate the curd from the whey.
El suero de leche es rico en proteínas.
B1Whey is rich in protein.
❌ Common Pitfalls
Suero vs. Leche
Mistake: "Using 'suero' to mean regular milk."
Correction: Only use 'suero' for the watery part left over after processing dairy.
✏️ Quick Practice
💡 Quick Quiz: suero
Question 1 of 1
If a doctor says 'Necesitas un suero', what is likely happening?
📚 More Resources
Frequently Asked Questions
Is 'suero' always something in a hospital?
No! It can also mean the 'whey' used in protein powders or the liquid left over when making cheese.
How do I say 'IV drip' in Spanish?
You can simply say 'el suero' or more specifically 'el sistema de suero'.