Nutrients travel with your food into your digestive tract and then into your bloodstream. That is why it's important to eat when you take your vitamins. They are better distributed with your food.
After food is broken down through mastication and chemical erosion in the mouth, esophagus, and stomach, the microvilli in the small intestine absorb nutrients into the bloodstream.
Through osmosis after they are broken down into their basic constituent elements by enzymes contained in the saliva and others in the stomach where others are digested. Through osmosis they enter they blood and are distributed to the other body organs.
