Natural Capsules Limited manufactures Fortified Gelatin Capsule Shells. Natural Capsules Limited offers Hard Gelatine Capsule shells, Hard Cellulose Capsule shells and Pharmaceutical Dosage Forms in Capsule Dosage Form. The Fortified Gelatin Capsule Shells are usually made of completely inert material [Gelatin], are now fortified with vitamins for added nutritional value. The Fortified Gelatin Capsule Shells for pharmaceutical and dietary supplement industries are available in sizes 00, 0el, 0, 1, 2, 3 & 4.