guarana (Paullinia cupana, Brazilian cocoa, Zoom) (cont.)

Pharmacy Author:
Medical and Pharmacy Editor:

DOSING (may vary with supplier):

  • Weight loss: Take 200 to 1600 mg of seed extract by mouth once daily. Not to exceed more than 3 grams per day.
  • Cognitive improvement: Take 150 mg of standardized dry extract by mouth once daily.
  • Energy improvement: Take 200 to 800 mg by mouth before breakfast or lunch once daily. Not to exceed more than 3 grams per day.
  • Diuretic: Take 486 mg by mouth once daily.
  • Diarrhea or dysentery: Take 1 gram by mouth up to 4 times a day.

DRUG INTERACTIONS: Guarana should be used with caution with medications like caffeine, green tea, armodafinil (Nuvigil), modafinil (Provigil), phentermine (Adipex-P), methylphenidate (Methylin), and amphetamine and dextroamphetamine (Adderall, Adderall XR). Combining these drugs with guarana may increase heart rate, anxiety, headache, and agitation. Individuals should check with their physicians before using this supplement.

PREGNANCY: There are no adequate studies done on guarana determine safe and effective use in pregnant women.

NURSING MOTHERS: It is not known whether guarana enters breast milk; therefore, it is best to avoid using it in nursing mothers.

SIDE EFFECTS: Side effects of guarana are agitation, anxiety, increased heart rate, abnormal heart rhythm, diarrhea, nausea, vomiting, and stomach cramps.

REFERENCES:

Medscape. Guarana (Herbs/Suppl) - Brazilian cocoa, guarana gum, guarana paste, guaranine, paullinia cupana, Uabano, Uaranzeiro, zoom.

Woods, DJ. Guarana: Paullinia cupana, P. sorbilis; also known as Brazilian cocoa and 'zoom'. J Prim Health Care. 2012 Jun 1;4(2):163-4.


Medically Reviewed by a Doctor on 8/11/2014


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