1 can cover up the bad smell of drugs, improve the stability of drugs. The drug in the capsule shell can be isolated from the outside world, avoid the influence of light, air and moisture, to have bad smell and unstable drugs have a certain masking protection and stability.
2 can make the drug in the body quickly effect. The drug is filled in capsules in powder or granular form and can be rapidly dispersed, dissolved and absorbed in the gastrointestinal tract without the influence of mechanical pressure during preparation compared to such dosage forms as tablets and pills.
3 can make liquid drug solid dosage form, such as soft capsule, easy to take and carry.
4 can delay or locate the release of drugs. The drug is made into granule or small pill, and the suitable coating material is selected according to the need, and loaded into the capsule, so that the drug has the effect of slow release and prolonged effect. Enteric-soluble capsules allow targeted release of drugs into the small intestine. There are also controlled-release capsules that release the drug in a prescribed medium at a slow and constant rate.
Therefore, drugs that stimulate the digestive tract cannot be taken apart, and sustained-release, controlled-release, enteric-soluble and targeted capsule preparations cannot be taken apart.


















