Absorption of most of the B vitamins happens further down in the small intestine, in the ileum. The other type of vitamin, the fat-soluble ones such as A, D, E and K, need to dissolve in fat before they can make it into the body. They stick around inside the body.
Similarly, is it OK to crush your vitamins?
If you have a hard time swallowing vitamin tablets, you have a few options in addition to cutting them in half. One quick solution might be switching to caplets or capsules, because they're easier to swallow. Even though it won't taste great, you can safely chew vitamin tablets or crush the tablet and mix it with food.
Are chewable vitamins absorbed better?
Most vitamin pills and supplements are best taken with meals or food. If you take them alone with water, they may not digest as well and may cause nausea or heartburn. Chewable vitamins are broken down better before reaching the stomach because of chewing and saliva, making them easier on the stomach.
Are vitamins absorbed better with food?
Although your body can handle and use most of the nutrients in multivitamins better when taken with food, this is not true of all vitamins and minerals. Despite the benefits of taking calcium carbonate with food, your body absorbs other forms of calcium better on an empty stomach.