Ginkgo biloba is an important ingredient in P.S. Plus , Neurotone and in SupraPak1 . In depression , especially among the elderly, Ginkgo is quite effective. In a study of 40 older patients who did not respond well to standard antidepressant drugs, who were given either Ginkgo or a placebo along with their antidepressant, the Ginkgo was far more effective. The score on the Hamilton Depression Scale dropped from 14 to 7 after one month and to 4.5 after two months with Ginkgo . Ginkgo reduces the loss of serotonin receptor sites among many other effects.
Studies show improvements in respiratory functioning and less bronchial reactivity.
It would take about 16 capsules daily to achieve these results. Impotence also responds well to Ginkgo . It improves blood flow to the penis as well as the brain. Another study of 50 patients was made at 80mg 3 times daily. One group of 20 who responded to papaverine initially regained potency after 6 months.