Have you experienced that when you try to give vitamin (iron) to your he always feel like vomiting always?

I did but what I gave my son is not Vitamins but it's Iron Supplemwnt when he got gastroenteritis. My pedia said it really does not taste good so she allowed us to mix it with fruit juices. And I guess that is the main reason why kids vomit when they drink it. Plainly because of the taste. But if it worries you too much, it is best you see the Pedia as it may be something else. :)