Empty Enteric Coated Capsules are used to release their contents in the intestines, rather than the stomach. This is beneficial for certain medications such as nitroglycerin and antibiotics because it can prevent them from being broken down by stomach acids before they reach the intestines.
The importance of enteric-coated capsules, in this case, is that if you take these types of medication with food or drink containing high levels of fats, proteins, or sugar your medication will not be properly absorbed into your bloodstream. In addition, some people experience an unpleasant side effect known as reflux when taking pills, which remain in contact with stomach acid for a prolonged period of time.