Can caffeine start a stopped heart?

If you were to inject caffeine into a person whose heart has stopped Pulp Fiction style, would it get their heart started again?

Update:

It's for a book taking place in a Medieval setting, with a snake fang used as a syringe or something like that.

1 Answer

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  • 2 months ago

    ...simply no. 

    A syringe in the middle ages?

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