Once A Day (Multi Vit)

A couple of colleagues were advised by the doctor to use these tablets. I wonder if anyone on here has used them too? I would like to start some multi vitamins and this Once a day sounds great as it has all those sufficient vitamins and minerals plus its an antioxidant too. But what dwindles my faith in it is it being local. Does anyone think being imported could produce better results, since the quality of locally made medicines has really become dubious.
I talked with the chemist about it and he said if you want to take some imported multi vit you could take Centrum. So how about that? Centrum is imported but its not an antioxidant anyway.

So has anyone of you being into any? and how was the experience?

crossing my fingers for the response

thankyou.