I agree that it may be hard to spot the changes, but either way there isn't anything lost by taking them. I read that vitamin B can be good for giving energy, so I'm currently trialling that in combination with the change to my diet. I also hear that vitamin D can be beneficial. Do you take a particular blend? Or is it a general multi vitamin tablet?
I take a general multi vitamin tablet. I don't usually favor a particular brand. I tend to get them from health food stores rather than pharmacist's if possible. I have this vague inkling that the multvits sold in health food places will be of better quality. But again this is something that is hard to prove.