Does gincosin drug cause meningioma?or is it safe?and what dosage do you recommend per day for improving my concentration and mental performance?

2 cases out of 20 K: Ginkgo preparations can cause seizures. Avoid the seeds and fruit (toxic) Ginseng the second component of Gincosan has been used as a medicine for over 5000 years. At age 19 it is not likely that you have a cerebral blood flow problem (in the absence of SLE or other uncommon conditions). You might consider undergoing a formal assessment done by a highly trained specialist (Behavioral Neurologist)