Trying to get back onto the major herb kick I did for years. Daily cider vinegar, panax ginseng, ginkgo, B12 and fish oils. Def 'feel' sharper after weeks of ginseng from what I remember. Have to watch side effects with some though, I took L-arginine for a week and I woke up resembling a fire victim one day. Eyes swollen like Berto after Ghost Guerrero finished with him and lips like Jagger himself!