Capsules are divided into hard capsules, soft capsules ( bullets) and enteric-coated capsules. Hard capsules are made by adding a certain quantum of medicinal greasepaint or supplementary accoutrements to make invariant greasepaint or grains, and filling them into concave capsules.

    Compared with other lozenge forms, hard capsules can mask the smell of drugs, are easy to swallow, and have a variety of colors and publishing designs that make drugs more recognizable and popular.

    Soft capsules relate to the medication of a certain quantum of medicinal material excerpts plus suitable excipients and sealed in globular, elliptical or other soft capsules, and prepared by contraction. The soft capsule material is made of gelatin, glycerin or/ and other suitable medicinal accoutrements. Enteric-coated capsules relate to hard capsules or soft capsules that are reused by pharmaceutical polymer accoutrements or reused by other suitable styles. Its shell is undoable in gastric juice, but disintegrates in intestinal juice to release the active component. Generally used gelatin capsules are carpeted with enteric polymer accoutrements ( similar as acrylic resin, cellulose acetate phthalate,etc.), also filled with medicines, and sealed with enteric cement.

    There are also numerous kinds of raw accoutrements demanded to make capsule shells, among which gelatin accounts for further than 90 of the quality of the capsule shells. Bounce and other substances can also be used to make the shells, but the volume is small. In addition to being easy to take, capsules have numerous advantages. For illustration, it can avoid the corruption of unstable medicines in light or air, avoid prickly maquillages or grains from galling the esophagus and gastric mucosa, and can also directly determine the cure of medicines to be taken, and can also allow the medicine to be administered at a specific position or at a specific time. Release on demand. Compared with tablets, the medicines in capsules are generally in the form of small patches or maquillages. As long as the shell of the capsule dissolves, the medicines can be snappily absorbed by the mortal body, adding the degree of immersion.