Guarana

Side Effects

Guarana can cause several side effects, such as:
 
  • Insomnia
  • Nervousness
  • Restlessness
  • Indigestion or heartburn
  • Rapid heart rate (tachycardia).
     
(Click Guarana Side Effects to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)
 

Drug Interactions

It can interact with a number of different medications (see Guarana Interactions).
 

How Safe Is Guarana?

Low doses of it are probably safe, although high doses can cause problems. Some people may be more likely to experience problems due to interactions with drugs and supplements. Therefore, you should talk with your healthcare provider prior to taking this supplement if you have:
 
Also, let your healthcare provider know if you are:
 
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
 
(Click Is Guarana Safe? for more information, including any available warnings and precautions.)
 
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