Despite the widespread raw material base of St. John's wort in nature, there is an urgent need to cultivate it [4,5]. In this regard, already some experience growing crops and developed basic elements cultivation technology.

Data extraction Data were extracted on the common and manufacturer names and uses of each herbal medicinal product, type and quality of the systematic reviews, sample sizes, and results. Main results 2 reviews (of adequate and good quality) of ginkgo showed positive effects on memory impairment, although these results are questionable because of the possibility of publication bias. 2 reviews (o...