formulation and evaluation of nifedipine tadalafil udenafil and valsartan nanosuspensions

Abstract

It was a great task for the researches in order to work on those drugs where there found some probability of finding alterations in the phenomena of solubility and penetration. The process of altering or else the study of different trails brought about new ideas which could help the drug to be better in all aspects that was earlier available. Many developments including formation of complex, decreasing the particle size and establishing lipid based systems, these changes could help in resolving the issues with respect to active ingredient. newlineWith that above specification the formulation and study of NS was taken into limelight to enhance the solubility and dissolution ability of poorly soluble drugs like nifedipine, tadalafil, udenafil and valsartan. newlineOne among the calcium channel blockers majorly used in hypertension was Nifedipine. In order to maintain constant plasma concentration which is desired for hypertension the best way is to make in the form of CRDDS. newlineThe method that has been selected for the formulation of Nifedipine nanosuspension was solvent evaporation method. Here combinations of SLS, Polaxomer, PVP-K30, UREA, and Acetone were considered. 238nm has been fixed in order to study the wavelength of the drug substance. It was observed that the point at which NDE melts was found to be at 174°C which was determined by capillary method indicated the purity of the drug. In order to study the maximum solubility different solvents were selected at 25°C using different ranges of pH found the highest solubility in 6.8 phosphate buffer. It was clearly observed that there was no problem between drug and other substances. newlineFrom the in-vitro studies, NF8 shows best drug release of 99.75% within 30 minutes where as all the other formulations takes about 45-60 minutes to release the drug. The drug release from the nanosuspension was explained by using the mathematical model newlineequations such as zero order, first order, peppas. There is no much change in the drug release from formulation during stability studies. newline