Fever-Tree is the brand that changed how the world thinks about mixers — and made it impossible to go back to artificial tonic water once you've tasted the real thing. Founded in 2003 by Charles Rolls and Tim Warrillow after a simple but revolutionary observation — that 75% of a Gin & Tonic is the tonic, yet most tonics were made with artificial sweeteners and synthetic quinine — Fever-Tree set out to source the finest natural ingredients from around the world and let them speak for themselves. Natural spring water, authentic quinine from the Rwenzori Mountains of the Democratic Republic of Congo, real ginger from three continents, Scottish elderflowers, Mediterranean botanicals — every ingredient in every Fever-Tree product is chosen with the same care a craft distiller would give to their spirit. The result is a lineup of premium mixers that don't just complement great spirits — they elevate them. From the iconic Premium Indian Tonic and spicy Ginger Beer to the aromatic Mediterranean Tonic, delicate Elderflower Tonic, and clean Club Soda, every Fever-Tree product makes the cocktail in your glass genuinely better. Browse our full Fever-Tree collection with fast nationwide shipping delivered straight to your door.