Margarine is much better for you than butter. No , not usually. Margarine is usually hydrogenated. These are very, very clogging to the arteries. Butter, in moderation, is by far the better option.
All vitamins supplements are the same.
Our bodies understand and utilize vitamins more easily from whole food sources and from natural sources. For more on this, see the article on vitamins . Digestion begins in your mouth. Yes , it sure does.