Really?? That's crazy :( My husband tried the gum and it wasn't for him, the patch kept sweating off at work, but the vape works for him. Idk what to tell ya :/
He probably doesn't get a high enough nicotine juice for vaping. Have him start off with a high nicotine one and if you really want him to stop the nicotine completely he can slowly lessen the amount of nicotine in the juice he gets. The juice does still give the same sensation just with better flavor. As long as he gets a high nicotine juice then he'll still get the lightheaded feeling and whatnot
Get him on the vape! :-) My husband used to smoke cigs but I'm allergic to the smoke. The vape Is supposedly not as bad for him and it has a good smell! :) Hubby loves it.