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GUARANA (GWAHR uh nah) may support energy and focus. It is a source of caffeine, which may increase alertness. The FDA has not evaluated this supplement for any medical use. It may contain ingredients not listed. Discuss all supplements you are taking with your care team. They can provide you with important safety information.
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Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
They need to know if you have any of these conditions:
Take by mouth with a glass of water. Follow the directions on the package labeling or ask your care team. If this supplement upsets your stomach, take it with food. Do not take this supplement more often than directed.
Talk to your care team about the use of this supplement in children. This medication is not recommended for use in children.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
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Do not take this with any of the following medications:
Check with your care team if you are taking any of the following medications:
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
Visit your care team for regular check-ups.
If you take this supplement regularly you may get withdrawal symptoms when you stop taking it. Symptoms include headache, being tired, dizzy, anxious, or nervous.
If you are scheduled for any medical or dental procedure, tell your care team that you are taking this supplement. You may need to stop taking this supplement before the procedure.
Herbal or dietary supplements are not regulated like medications. Rigid quality control standards are not required for dietary supplements. The purity and strength of these products can vary. The safety and effect of this dietary supplement for a certain disease or illness is not well known. This product is not intended to diagnose, treat, cure or prevent any disease.
The Food and Drug Administration suggests the following to help consumers protect themselves:
Since guarana is derived from a plant, allergic reactions are possible. Stop using this herb if you develop a rash.
Side effects that you should report to your care team as soon as possible:
Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
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This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Keep out of the reach of children.
Store at room temperature or as directed on the package label. Protect from moisture. Throw away any unused supplement after the expiration date.
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
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Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.