(HealthDay News) -- Caffeine is much more than a wake-me-up among coffee drinkers. The chemical stimulant also is found in everything from popular sodas to over-the-counter pain relievers and cold remedies.

The Nemours Foundation says caffeine may trigger these symptoms in children:

  • Feeling nervous and jittery.
  • An upset stomach.
  • Headaches.
  • Trouble concentrating and sleeping.
  • Showing a spike in heart rate and blood pressure.