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| Guarana |
| Description: Guarana (Paullina cupana) is a plant found in northern Brazil. Its seeds are crushed to form a paste that is used for herbal supplements. Traditionally, it has been used to treat diarrhea, fatigue, excess hunger, and arthritis.1 Guarana’s active components are guaranine and the alkaloids theobromine and theophylline. Guaranine is almost identical in chemical structure to caffeine, and has many of the same effects. Guarana also contains tannins, which may account for its traditional use to treat diarrhea. Asian ginseng, Siberian Ginseng, and Guarana are often used by athletes, as they generally have an energizing effect. No studies of their specific role in athletics have been done, however. Guarana is of questionable usefulness in weight loss. Like caffeine, guaranine stimulates the central nervous system, increases metabolism, and has a mild diuretic effect.2 However, it also has all the negative effects of caffeine as well: anxiety, insomnia, heart palpitations, and hyperactivity. Many nutritionists do not recommend using guarana for weight loss. Useful in treatment of: Athletics and Sports, weight loss. Recommended Dosage: 1 to 2 grams crushed guarana steeped in 1 cup hot water, three times daily. Contraindications: Guaranine effects the body in the same manner as caffeine. . Individuals with conditions that may be complicated by high caffeine intake (including insomnia, depression, and pregnancy) should speak with a health professional before adding guarana to their diet. References: 1Duke JA. CRC Handbook of Medicinal Herbs. Boca Raton, FL: CRC Press, 1985, 349. |
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