Caffeine mouth spray vs coffee vs energy drinks ☕️

Which source of caffeine is best?

Sublingual caffeine delivery via oral spray does not accelerate blood caffeine increase compared to ingestion of caffeinated beverages

Background

Caffeine can be absorbed through the lining of the mouth, bypassing digestion and rapidly spiking peak serum caffeine concentration⚡️

But do caffeine mouth sprays show these benefits vs caffeinated beverages? 🧐