What the word is used for object in the picture and which verb is collocated with it?
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I would call that an IV bag. IV is short for Intravenous Therapy.
As Maulik says, infuse is probably the best verb, although I would use a different phrase.
Give him electrolytes intravenously.
Give him electrolytes by IV.
In medical field, we call it as an 'infusion'. The object you see there from where the liquid comes is a 'bottle' made of plastic/glass etc.
For instance, a patient with severe dehydration comes, I may advise the nurse to treat him with the infusion of 5% dextrose or whatever.
The verb is infuse.
Infuse him with electrolytes
A major change in the question unbeknownst to me! [I'm removing the 'cartoon' part, it's not relevant now]
Yes, that's an infusion bag