Any Sodastream Energy fans? I recently discovered this, solid option for mainstream brands. Cheap and tastes very similar to sugar free Red Bull. : r/energydrinks
Amazon.com : SodaStream Energy Drink Syrup, 16.9oz : Soda Soft Drink Syrup : Grocery & Gourmet Food
Green monster? : r/SodaStream
4 Pack Energy Drink Flavored Soda Syrup - SodaStream