We all go to buy medicine after a cold, fever, or illness. Modern medicines are basically wrapped in a capsule-shaped object, which contains medicines. Why should medicines be made into capsules? What are the functions and effects of these capsules? This is actually related to the absorption effect of the capsule. I believe that many of my friends have doubts. Zhejiang Shicheng Capsule Co., Ltd. will answer your doubts below.
Why are many medicines made into capsules?
Some medicines have high oil content and are not easy to be made into solid tablets, so they need to be packed into capsules; some medicines have unstable chemical properties and are easily affected by moisture, or deteriorate under high temperature and light exposure. Capsules can improve the quality of medicines. The stability of the drug is stable and the shelf life is extended; some drugs are insoluble in water, so they are not easily absorbed by the human body in the digestive tract, and must be dissolved in an appropriate oily solvent and then put into capsules; some drugs for the treatment of the digestive system must be absorbed in the intestinal tract. Since gastric juice is acidic and intestinal juice is alkaline, it must be put into an acid-resistant capsule shell, so that the drug will only dissolve in the alkaline intestinal tract; there is also a slow-release capsule that can make the drug in it dissolve It is slowly released in the human body, prolonging the effect of the drug and improving the efficacy of the drug.
Capsules are generally divided into hard capsules and soft capsules. Hard capsules are mostly cylindrical shells. Soft capsules mainly contain liquid or suspended drugs, so the drugs contained in soft capsules are also called capsules.
The vast majority of capsule shells are made of gelatin. Gelatin is a protein-like substance, mainly extracted from animal skin, bones and tendons, and glycerin or plasticizers are added during the production process. Gelatin has the properties of high viscosity and easy to freeze. It is insoluble in cold water and easily soluble in warm water. It can slowly absorb water equivalent to 5 to 10 times its weight, and then expand and soften. Enteric-coated capsules are special. Enteric hard capsule shells are made of materials such as cellulose acetate phthalate, while enteric soft capsule shells are usually made of calcium alginate.
Most capsule shells can be dissolved, digested and absorbed in the human body. Therefore, the capsule is not only the carrier of the drug, but also does not affect the efficacy of the drug, and is also easily absorbed.