First thing is first, that's an incredibly useful post and easily one of the best I've seen whilst I've been on these boards. No disrespect to anyone else, but this is fantastic so thank you for the information. I have a few questions:
Firstly, are you talking about B12 oral tablets/capsules? Or are you talking about some other form of oral B12? My local chemist sells some capsules/tablets (I'm not sure because I've never used them) so I wasn't sure if they'd be a good addition.
Secondly, is vitamin C still efficient/beneficial in chewable tablets? I recently bought a large tub full of 500MG vitamin C chewables, which seem to be effective. I've taken them when I've felt a bit of a cold or runny nose coming on, and they have worked superbly.
Thirdly, do you use NAC in tablet/capsule form or bulk powder? I've seen both around on the internet, and just wasn't sure which would be best and/or most efficient.