Coffee & café

How much caffeine is in Costa Signature Blend espresso?

Costa lists 100 mg for one Signature Blend espresso shot in its current UK store guide. Drink sizes with two or more shots contain more.

How long might it remain?

Using the calculator’s five-hour half-life model, this serving would take approximately 10.0 hours to fall below 25 mg. This is a mathematical estimate, not a measurement of your body.

Source: Costa Coffee UK caffeine guide

Product formulations can change. Check the current package or menu for the serving you consumed.