Very refreshing on a hot day, low calorie, sugar and caffeine free I am a big fan of anything lemon and lime flavoured, and am trying to cut down on things such as sugar and caffeine - so, naturally, when I saw a bottle of 7Up free on special offer I had to try it.7Up Free claims to be free from sugar, preservatives, colourings and caffeine, with natural lemon and lime flavourings.