Nausea ginkgo

A metaanalysis indicated that EGb 761 (an extract of ginkgo biloba) may have some therapeutic effect at doses of 120 to 240 mg of the standard leaf extract twice daily. Because of limited efficacy data, the potential for adverse effects (e.g., nausea, vomiting, diarrhea, headache, dizziness, weakness, and hemorrhage), and the poor standardization of herbal products, it is recommended that ginkgo biloba be used only with caution. 

Adverse effects have been reported with a frequency comparable to that of placebo. These include nausea, headache, stomach upset, diarrhea, allergy, anxiety, and insomnia. A few case reports noted bleeding complications in patients using ginkgo. In a few of these cases, the patients were also using either aspirin or warfarin. 

Eating raw ginkgo seed may cause toxic reactions such as nausea, vomiting, seizures, and other symptoms of central nervous system disturbances (Chen and Chen 2004 Leung and Foster 1996), and even cooked seed should be eaten only in small amounts (Leung and Foster 1996). These concerns are not associated with the seed administered in decoction (Bensky et al. 2004). 

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