This is the 11518th most frequent Catalan word.
vitamina
A nutrient essential for growth and health.
Here, 'vitamina' is used in a nutritional context to refer to a category of essential nutrients vital for health.
La taronja és alta en vitamina C.
The orange is high in vitamin C.
In this case, 'vitamina' is metaphorically used to express something that provides rejuvenation or energy.
Després d'estudiar tant, necessito una vitamina per al meu cervell.
After studying so much, I need a vitamin for my brain.
The usage here pertains to a scientific context, discussing a specific nutrient recently identified.