- Oh, and then there's 250-300mg of caffeine and a MethXanth Stack with DMAE, Guarana, Yerba Mate, Theobromine. Octopamine and just about any other "ine" you'd want before your next workout or competition
- This is one serious liquid power stack
- new 12 pack case
What’s in Speed Stack? Zero sugar, 5 calories, and one measly little carb.