Red Bull’s annual Summer Edition has returned for 2026 with Citrus Zest, a seasonal flavor based on the bright and tangy profile of Sudachi lime. The limited-time extension first surfaced in the United Kingdom, where it launched in both regular and sugar-free versions, giving you the choice of the calorie level. It also rolled out in multiple can sizes, including the larger 16oz or 473ml, packing a scaled 151mg of caffeine, on par with most of the Monster Energy family.
Citrus Zest has now started appearing in markets beyond the United Kingdom, confirming a wider, international rollout of Red Bull’s latest Summer Edition. As the company has done with some of its previous Edition launches, the name is not the same everywhere, with many countries going more direct in just Sudachi Lime. That includes the United States, where this year’s Summer Edition is available in regular and sugar-free, in 8.4oz and 12oz can sizes.
