Sodium carboxymethyl starch is a common ingredient in pharmaceuticals; it is a highly water-soluble derivative of starch. Due to its excellent solubility and stability, it is widely used in pharmaceutical preparations to improve their solubility and bioavailability. It physically interacts with many drug molecules, forming stable inclusion complexes, thereby prolonging the drug's plasma half-life and enhancing its efficacy.

　　The application of sodium carboxymethyl starch is particularly prominent in drug delivery systems. For example, when a drug exists in the form of a solid dispersion, sodium carboxymethyl starch can act as an effective solid dispersant, dispersing drug particles in water and thus improving its solubility. In addition, sodium carboxymethyl starch can also be used to prepare nanoparticles, encapsulating the drug in nano-sized particles to help improve drug stability and bioavailability.

　　In the pharmaceutical process, sodium carboxymethyl starch also has auxiliary functions. It can act as a tableting aid in drug tablets, improving the mechanical strength of the tablets. Sodium carboxymethyl starch can also be used as a controlled-release agent, adjusting the drug release rate to achieve sustained drug release, thereby reducing the frequency of medication and improving patient compliance.

　　In addition to the above applications, sodium carboxymethyl starch can also be used in oral solutions, capsules, suppositories, emulsions, and other preparations. Its multifunctionality gives it broad application prospects in the pharmaceutical industry.

　　As a highly water-soluble derivative of starch, sodium carboxymethyl starch plays an important role in the pharmaceutical industry. Its application in pharmaceutical preparations can improve drug solubility and bioavailability, thereby enhancing efficacy. Sodium carboxymethyl starch can also be used to prepare nanoparticles, solid dispersions, and controlled-release systems, expanding the application areas of drug delivery systems. With the continuous advancement of the medical field, the application prospects of sodium carboxymethyl starch are expected to be even broader.