Of those given Coca-Cola, exactly half saw the drink destroy the blockage completely and a further 19 only needed non-invasive treatments as a result of Coke’s help.

Only four needed full surgery, giving Coca-Cola a success rating of 91.3 per cent.

The study reported: ‘Coca-Cola administration is a cheap, easy-to-perform and safe procedure that can be accomplished at any endoscopy unit.’

Coca-Cola has an acidity rating of 2.6 on the pH scale because it contains both carbonic and phosphoric acid.