Gelatin soft capsule offers an effective system of oral medications, especially those that have low solubility and / or permeability (Classes II, III, and IV of the Biopharmaceutical Classification System [BCS]). The liquid filling of the soft gelatin capsule may contain ingredients that help increase its solubility and permeability. These ingredients are mostly liquid or semi-solid, making it difficult to incorporate them into other types of solid dosage, such as tablets.