I've recently started taking lysine tablets after meals twice a day (2g afternoon 2g evening) and I've strangely noticed:
subtly better attention, motivation, subtly feeling sharper with better recall.
I've been taking 25 mg zinc picolinate twice a day & 5000IU vitD3 every other day along with it (added the lysine only recently).
I bought the tablets just to mess around, since zinc+lysine supposedly raises sperm volume (bigger load =stronger orgasms, lol),
but I'm quite surprised with the noticeable effects on cognition.
Definitely adding the zinc+lysine combo to my daily stack. Really gives me a calm and sharp boost throughout the day for some reason.
The 2g dose is probably overkill though, will probably drop down to 1 tablet twice a day after a while.
Found this on the matter. No idea about its credibility though.
L-LYSINE FOR IMPROVING NORMAL COGNITIVE FUNCTIONS
However, when administration is interrupted the cognitive performance returns to baseline."
Edited by Baten, 02 February 2012 - 06:42 PM.