Revealed: The High Street coffees with the biggest caffeine kick

If you prime up a java erstwhile you're retired and astir the levels of caffeine could alteration hugely depending wherever you stop, caller probe suggests.

Consumer radical Which? measured the caffeine successful cappuccino, espresso and filter java astatine Caffè Nero, Costa, Greggs, Pret a Manger and Starbucks.

It recovered Pret's azygous espresso had six times arsenic overmuch caffeine arsenic Starbucks's.

And Costa had the strongest mean cappuccino with 325mg of caffeine - adjacent to 4 cups of tea.

While a beardown java mightiness beryllium conscionable the boost you need, Which? said consumers should beryllium alert to caffeine levels.

"Our probe shows you whitethorn beryllium consuming importantly more, oregon less, caffeine than you bargained for," said Shefalee Loth, a nutritionist astatine Which?

"Most of the clip this shouldn't beryllium an contented but if you portion a batch of java oregon request to bounds your caffeine intake you mightiness privation to see what you're ordering and wherever from."

Caffeine is simply a earthy stimulant that tin marque you much alert. However, immoderate radical are delicate to it oregon request to debar it for wellness reasons, specified arsenic being pregnant.

One origin that tin interaction caffeine contented of drinks is the benignant of java bean. Of the 2 main types used, Arabica beans incorporate astir fractional the caffeine of Robusta beans, and determination are besides variations successful sensation betwixt the two.

Which? said consumers seeking a bigger caffeine boost mightiness privation to opt for a portion with a higher amount. However, radical who request to bounds their intake should debar the stronger coffees.

Costa Coffee said the magnitude of caffeine successful its drinks varied depending connected size of a portion and the benignant of java used.

"We would promote customers to beryllium alert of the caffeine contented successful their favourite Costa java to guarantee it is close for their dietary requirements oregon manner choice," a spokeswoman said.

Pret declined to comment, portion the BBC has contacted Caffè Nero, Greggs and Starbucks for comment.

Have you noticed a quality successful the caffeine deed you get from antithetic java shops? Tell america astir it by emailing: haveyoursay@bbc.co.uk

Please see a interaction fig if you are consenting to talk to a BBC journalist. You tin besides get successful interaction successful the pursuing ways:

If you are speechmaking this leafage and can't spot the signifier you volition request to sojourn the mobile mentation of the BBC website to taxable your question oregon remark oregon you tin email america astatine HaveYourSay@bbc.co.uk. Please see your name, property and determination with immoderate submission.