The phrase usually implies something beneficial has happened for improvement or progress.

Positive Connotation

Used metaphorically to describe non-medical encouragement or assistance.

Metaphorical Usage

The phrase often indicates an emotional boost rather than a physical one.

Literally refers to receiving medicine, a vaccine, or other substances through an injection.

When used literally, it doesn't imply positive or negative, just a factual act.

In medical contexts, it's a common way to refer to various types of injections.