Since the substance contains a large amount of caffeine, it is possible to develop adverse effects if you take too much of it. People who take too much guarana may experience the following symptoms:
- Muscle twitching
- Difficulty breathing
- Loss of consciousness
- Increased urination
- Irregular heart rhythm (arrhythmia)
- Rapid heart rate (tachycardia)
- Loss of life.
(Click Guarana Overdose for more information.)
Refer to the label of your individual product for information on how best to store it. Keep guarana out of the reach of children.