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.

Medically Reviewed by a Doctor on 8/11/2014

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