What makes Garlic Oil Capsules different from other garlic supplements? Garlic Oil Capsules are a unique supplement made with pure and potent garlic oil. The capsules are made with vegetable cellulose and are enteric coated, so they release their active ingredients in your stomach, where it can be absorbed. Garlic Oil Capsules are gluten-free, and contain no added preservatives or additives. These garlic capsules are a natural way to help combat the common cold, and other minor illnesses.