http://www.askmen.com/love/dzimmer_1...e_answers.html
L-Lysine is works well (and fast) for me. Don't mega-dose. 500mg to 1gm or so does the trick. There are a couple of aminos listed in the article (above), though it seems they're contraindicative of each other.
Maybe cruisers should set up a double blind test and publish the results.
