i sprayed about 100 sprays out. 60 then 40. i took the one that has only 300mg in it and i just got a good buzz no trip at all really. the box just says zicam oral mist concentrated . so i think the nighttime forumula has around 550 almost so nexttime i will try it for sure and expect a trip.. oh and i even took some nyquil caps after i realized the zicam wasnt enuff and nothing