Traditional use, moderate research — including some studies on circulation-related support.
Korean red ginseng (Panax ginseng) is a well-known traditional ingredient for stamina and vitality, with a moderate and growing modern research base.
Some studies have looked at its relationship to circulation-related support and general energy, adding to the traditional case for its inclusion.
We rate Korean red ginseng as traditional use with moderate research — a step above horny goat weed's evidence base, but not as strong as L-arginine or ashwagandha.