Hi Laurie
yes, grape seed extract and also pycnogenol are really amazing supps, both for concentration and also for their immuno supportive functions
click here for detailed info on both from the Health Encyclopedia at iherb.com
iHerb also sells a grapeseed/grapeskin /pine bark blend at a substantially discounted cost from what it is in health stores
here is that link
Billberry and Borage oil are 2 supps that our doc recommended for use with
OPCs (Oligomeric Proanthocyanidins) for additional antioxidant and mental alertness
HTH