guarana seed extract

Reported Doses

Safety/efficacy may not be established; reported doses may be derived from limited or potentially inadequate studies w/ variable regimens, multi-ingredient products, or where concentration of active ingredients may vary widely

Effectiveness Ratings

[see Herb & Supplement Effectiveness Rating Definitions table]

anorexia, cancer-related

[Insufficient Evidence]

Dose: 50 mg PO bid

athletic performance

[Insufficient Evidence]

Dose: 222.2 mg PO x1; Info: product stdzd to 40 mg caffeine

cognitive function

[Insufficient Evidence]

Dose: 37.5-75 mg PO x1 (stdzd to 11-12% caffeine); Alt: 222-300 mg PO x1; 125 mg/kg/dose PO x1; Info: doses >150 mg rarely more effective

erectile dysfxn

[Insufficient Evidence]

Dose: 250 mg PO bid

fatigue, chemo-related

[Insufficient Evidence]

Dose: 50 mg PO bid

obesity

[Insufficient Evidence]

Dose: 855 mg/day PO divided tid; Info: given 15min before meals