Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

60results about How to "The prescription process is simple" patented technology

Doxorubicin hydrochloride self-assembled polymer nanoparticle and preparation method thereof

The invention discloses a doxorubicin hydrochloride self-assembled polymer nanoparticle which is prepared from doxorubicin hydrochloride and an amphipathic high-molecular polymer PLGA (Polylactic-co-Glycolic Acid), wherein the PLGA is formed by two monomers, namely lactic acid (LA) and glycolic acid (GA). The preparation method comprises the following steps: 1) dissolving a drug doxorubicin hydrochloride into a polar organic solvent A so as to obtain a doxorubicin hydrochloride solution; 2) dissolving the PLGA into a polar organic solvent B so as to obtain a PLGA solution; 3) uniformly mixing the doxorubicin hydrochloride solution with the PLGA solution so as to obtain an eutectic solution, dripping the eutectic solution into an aqueous phase under the stirring condition, continuously stirring, and volatilizing the organic solvent; and 4) centrifuging the completely volatilized solution at a high speed by using a centrifugal machine, and collecting the precipitate, thereby obtaining the doxorubicin hydrochloride self-assembled polymer nanoparticle. The prepared product can achieve the effects of reducing the drug toxicity, reducing the administration frequency, improving the drug stability, delaying in-vivo release time of the drug, reducing adverse reactions of the drug, improving the bioavailability and efficacy of the drug and achieving excellent treatment effects.
Owner:LIAONING UNIVERSITY

Compound sustained-release tablet of cetirizine and pseudoephedrine and preparation method thereof

The invention discloses a compound sustained-release tablet of cetirizine and pseudoephedrine and a preparation method thereof. The tablet comprises cetirizine or pharmaceutically acceptable cetirizine salt and pseudoephedrine or pharmaceutically acceptable pseudoephedrine salt. The preparation method comprises the steps of: preparing the pseudoephedrine or the pharmaceutically acceptable pseudoephedrine salt into a sustained-release tablet core; uniformly dispersing the cetirizine or the pharmaceutically acceptable cetirizine salt in a coating solution to coat the surface of the tablet core. Two active materials with different doses are prepared into the compound sustained-release tablet by a coating method. The preparation method solves the problems of the quick release of the cetirizine and the sustained release of the pseudoephedrine, has convenient operation and easy quality control, and is suitable for industrial production. In the tablet, more than 85% of the cetirizine is dissolved within 30 minutes, 90% of the cetirizine is dissolved out within 1 hour, and the pseudoephedrine releases medicaments in a sustained mode within 12 hours or 24 hours. The tablet is taken once or twice a day, and can reduce the administration time, better stabilize the concentration of blood medicaments and reduce adverse effect.
Owner:YANGTZE RIVER PHARM GRP CO LTD +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products