I think it has helped my avoid a lot of coughs and colds that my nearest and dearest have suffered.
I am also very aware of the power of the placebo, but all the time it appears to work I’m gonna keep taking it (well Sainsbury’s Energise or whatever they call it). I can piss far more than £2.50 a month away down the pub… I am aware that a good diet would probably be better but I can’t cook!
I think from memory, the levels of vit C etc. are just below what the Daily Mail perceive to be dangerous, so it must be safe!*
*(This comment is intended to be tongue in cheek before anyone gets worried)