Can a man take a prenatal vitamin?

if you're pregnant, yes. although i should think it would do no harm to take them when NOT pregnant. However the vitamins are specifically for pregnant women and so the vitamins in it would be of a different recommended daily amount, you should check the label first and see what % of your RDA for each vitamin it has because for some vitamins for example Zinc, continually being on a high dosage of it can cause your blood to stop absorbing copper and iron .....etc.

Basically, jsut check the label before taking any.