A man who was drinking six energy drinks a day has shared a graphic image of his blistered, peeling tongue, which he claims was caused by the drinks.
Dan Royals, a teacher from Australia, posted the picture online to warn others about the dangers of sugar-filled energy drinks.
He claims his doctor told him the sugars and chemicals - including amino acids, B vitamins and herbal substances - were eating away at his tongue and causing serious damage.
He posted on the Facebook group Get It Off Your Chest: "Who drinks energy drinks? Addicted to them? You may want to think again.