Acid Armor Capsules by Arthur Andrew Medical are a revolutionary new capsule that acts like an enteric coating. Acid Armor are made of an extra-thick layer of cellulose (the main component of veggie caps) and are a much healthier option than enteric coatings. Enteric coatings us Phthalates which are plastic chemical polymers. These same chemicals are banned in childrens toys, so we wouldn't even think about adding them to any of our products. Acid Armor capsules have a better-designed way of fitting the two sides of the capsules together, which limits leaking. Acid Armor capsules have also been designed to delay the release of the capsule's contents for up to an hour. When a product like Neprinol is taken on an empty stomach, the capsule enters and leaves the stomach in 30 minutes or less. This means that the Acid Armor provides more than enough time for the serrapeptase enzyme to get through the stomach and into the more "enzyme friendly" environment of the intestines.