Objective: The goal of this research study was to conduct a preformulation analysis of glipizide in order to establish a stable, robust as well as therapeutically effective system. Methods: Glipizide was characterized to determine its flow properties. Solubility was determined in different pH-varying solvents and its purity was determined by infrared spectrum and absorption maxima. Standard UV curve was developed to aid in further analytical research studies. Finally loss on drying (LOD) and drug-excipients compatibility tests were performed. Results: Glipizide has poor flow and compressibility properties (BD 0.222 g/ml, TD 0.425 g/ml, Carr’s index 47.78%, Hauser’s ratio 1.915). Solubility of drug was found to increase with increase in pH. The purity of drug was confirmed by infrared spectrum which showed characteristics peaks and by uv spectroscopy which exhibited maxima at 276 nm. The standard curve obtained was linear with correlation coefficient (R2 =0.998) and equation y = 0.0144x +0.0078. There were no drug excipient interactions which was clear as no visual changes in drug samples were observed with respect to discoloration, liquefaction and odor. Conclusion: The drug candidate under consideration was pure glipizide which had poor flow property suggesting use of granulation technique during tablet manufacturing and it was stable with selected excipient at reported ratio at 40oC / 75 % RH for 4 weeks.
Oral route of drug delivery is one of the most preferred route of drug administration. People often consume oral solids, especially OTC drugs, at any time before or after breakfast with water or any other available hot or cold beverages. Crocin is one of the popular OTC brands of paracetamol, which is preferred in large number. Patient consumes this OTC tablet with available beverages which may be hot or cold. However, beverages interact with paracetamol, affecting the release of drug. In view of this, work was focused on study of the effect of various beverages such as coffee, tea, milk, carbonated drink and buttermilk on release of paracetamol (Crocin tablet) tablet using USP type II dissolution apparatus. Dissolution media used was modified phosphate buffer (pH 5.8) which was further added with beverages and was analyzed by UV spectrophotometrically. Dissolution profile revealed the maximum drug release 97.03 ± 1.29% in plain water was while minimum with tea 23.64 ± 2.00%. In conclusion, beverages consumed while administering with paracetamol tablet affects the release of drug and therefore should be cautiously used or avoided with dosage forms.
The aim of this study was to develop a pH-independent release formulation of dipyridamole (DP) by the combined use of pH-modifier technology and cocrystal technology tartaric acid (TA) was selected as an appropriate pH-modifier in terms of improving physicochemical properties and dissolution behavior of DP under neutral conditions. Molecular docking method was used to identify the suitable conformer. Upon optimization of the ratio of TA to DP (molar ratio of 1:1, 1:2 and 1:3) was prepared by a solvent assisted griding method. Scanning electron microscopy images revealed that formation of DP-TA co crystals supported by supported by powder X-ray diffraction and differential scanning calorimetry analyses. Spectroscopic analysis suggested that there might be inter-molecular interaction among DP and TA resulting in pH independent dissolution behavior of drug substance. The study confirmed the selection of proper coformer and exhibited enhanced physicochemical, solubility and stability of the Dipyridamole cocrystals. Hence, based upon results it revealed that cocrystallization helps in improving the physicochemical properties of the API. Keywords: Dipyridamole, Coformer, Molecular docking, Radar chart, solvent assisted griding, Cocrystals
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.