i can actually experience joy and relaxation. to take that deep, refreshing breath. reporter: dr. richard besser, abc news, new haven, connecticut. and our producer made a very good point on this. that what they use in the treatment is just a fraction of what you would get in the club taking the obviously much more potent form. so it s not taking the party pill itself but a much lessened form of it. it s important to point out. and chris and his girlfriend, they re engaged to get married next year. and most of the patients that are taking this new drug say it works almost instantly. again, it ends up targeting 5% of the brain. 50%. and as you heard from one of the doctors of psychiatry, could be the biggest breakthrough in 50 years. most anti-depressants take weeks to become effective. they say that can work like this drug can work like that. could be a game changer. big deal. big deal. well, straight ahead, one last time for the season. yes indeed. the patriots and