Mental performance
under sustained demand.
In a small study of healthy young adults, researchers tested a specific Panax ginseng extract during repeated, demanding mental tasks.
The 200 mg G115 dose improved serial subtraction performance and reduced reported mental fatigue at most measured time points.
Keep in context: These were short-term laboratory results. They do not establish lasting improvements in everyday focus or equivalent effects from Kamphal’s extract.
Read the published study (opens in a new tab) Reay et al. · Journal of Psychopharmacology · 2005
