Guarana Problems
Guarana is a plant native to the Amazon region in South America that grows along the jungle floor and produces vibrant red berries. These berries are frequently used as a treatment for malaria, diarrhea and heart problems as well as to improve endurance and energy. But guarana has the potential to cause problems or side effects in some people.
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Function
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Guarana contains caffeine, which is found in coffee and teas. Along with other chemicals in the plant called theophylline and theobromine, caffeine stimulates the central nervous system (CNS).
Types of Side Effects
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Side effects of guarana occur primarily because of its CNS-stimulating properties and include insomnia, nervousness, restlessness, nausea, vomiting, stomachaches, increased heart rate, hypertension, tremors and excessive urination.
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Risks
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Taking too much guarana has the potential to cause even more serious side effects like headaches, severe anxiety or agitation, ringing in the ears, painful urination, severe stomach cramps and arrhythmia.
Features
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Guarana also interacts with some drugs and must not be taken with amphetamines, ephedrine, quinolone antibiotics like ciprofloxacin, acid reflux drugs like cimetidine, estrogen supplements and the antidepressant drug fluvoxamine.
Warning
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If you use guarana for a period of months or years and suddenly discontinue its use, you are likely to experience symptoms of caffeine withdrawal, including headaches, fatigue, drowsiness, decreased concentration, irritability and depression. If you are pregnant, taking too much guarana puts you at risk for having a miscarriage, according to RxList.com.
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