Guarana Side Effects

Due to the large amount of caffeine found in guarana, side effects are usually associated with caffeine assumption. For example, side effects may include shakiness or jitteriness, headache, insomnia, and nervousness. Some side effects of guarana are potentially serious and should be reported to a healthcare provider right away, including a rapid heart rate, difficulty breathing, or anxiety.

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Does Guarana Cause Side Effects?

Guarana contains a large amount of caffeine (which is actually the active ingredient in guarana). Therefore, guarana can cause any of the side effects that are usually associated with caffeine consumption.

Common Guarana Side Effects

Since guarana has not been adequately studied in clinical trials, all information on side effects comes from what is known about caffeine. Based on this information, common guarana side effects may include:

Insomnia
Nervousness
Restlessness
Indigestion or heartburn
Nausea and vomiting
Shakiness (tremor) or jitteriness
Increased urination
Headaches
Ringing in the ears (tinnitus).

Guarana Side Effects to Report

Some side effects with guarana, while occurring infrequently, are potentially serious and should be reported to your healthcare provider right away. These include but are not limited to:

High blood pressure (hypertension)
A rapid heart rate (tachycardia)
Rapid breathing or difficulty breathing
Seizures
Anxiety or agitation
An irregular heart rhythm (arrhythmia)
Feelings of a rapidly or forcefully beating heart (known as heart palpitations)
Signs of an allergic reaction, such as unexplained rash, hives, itching, unexplained swelling, wheezing, or difficulty breathing or swallowing.

(Guarana Side Effects Continued: Page 2)