Almost every energy drink has its own “energy blend” of proprietary ingredients.
Caffeine
In small quantities, caffeine may boost energy, alertness and athletic performance.
Limit caffeine to 200 mg at a time, no more than twice a day.
Since it lowers blood sugar, avoid it if you’re taking diabetes medication.
But experts agree they’re unlikely to pep you up, despite what drink labels tout.
Sugar
Some energy drinks can pack up to 62 grams of sugaror 15 1/2 teaspoons worthper 16-ounce can.
Taurine
Taurine is an amino acid, which may boost athletic performance and metabolism.
Green Tea Extract
Used to deliver a kick without the jolt, this extract delivers small amounts of caffeine.
Guarana
This extract, from the seeds of the South American guarana plant, is aconcentrated source of caffeine.
Its claims that it stimulates weight loss and fights fatigue are shaky at best.
Claims that the extract promotes weight loss have yet to be backed up by research.
Yet the research regarding these claims is conflicting.
Carnitine
This amino acid purportedly pumps up endurance and promotes fat burning.
