How to achieve the sustained release effect of the drug

There are two main types of sustained-release technologies for oral tablets, one is membrane sustained release, and the other is matrix sustained release membrane sustained release, which is equivalent to building a house to close the drugs, leaving only a small door to let them come out slowly. The sustained release of the matrix is equivalent to entanglement of the medicine with a ball of aquatic plants so that they can only be released slowly. There are many specific technologies. Some insoluble polymer materials will be used for the sustained release of membranes. The framework materials can be insoluble, hydrophilic gels or bioerodible materials. Membrane materials can release drugs by adjusting the ingredients to naturally form some micropores, or laser drilling and other methods. In addition, the drug pellets can be wrapped with a release retarding material to achieve a sustained release effect, which can be a combination of coatings of different thicknesses, or multiple coatings. Sustained-release capsules use this principle. The pellets inside have different coatings, and the time to dissolve the drug is also different. Then, a combination of several pellets with different drug release speeds will release more smoothly as a whole.

simply put:

That is, the drug will not be released in full in the body immediately.

It reduces the trouble of taking medicine and keeps the blood concentration stable, which can reduce the side effects of the medicine.