Background: The cocrystallization process in pharmaceuticals has gained widespread attention as a recent method of modifying physicochemical properties without altering the pharmacological characteristics of drugs. Cocrystallization provides a couple of benefits like it can be employed for a large number of APIs (acidic, basic, ionizable, or non-ionizable), and secondly, the availability of a large number of potential coformers increases the possibility of the cocrystals (CCs) that can be synthesized for an API. The main objective of this study was to investigate the effects of cocrystallization on drugs having poor aqueous solubility. Results: Aspirin (AN) and benzoic acid (BZ) were cocrystallized by using the solvent evaporation technique. CSD (Cambridge Structure Database) software and ΔpKa value method were used for the selection of the drug and coformer and for prediction of CC formation. The analysis of CCs was performed using DSC (differential scanning calorimetry), FT-IR (Fourier transformation infra-red spectroscopy) and XRD (X-ray diffraction) techniques. In vivo anti-inflammatory studies were conducted on 24 Wistar rats divided into four groups. Conclusions: Here, in this study, in vitro dissolution studies revealed an improved solubility profile of CCs compared to pure drug and marketed formulation viz. 87%, 31% and 60% respectively. The in vivo antiinflammatory studies exhibited improved anti-inflammatory activity compared to pure drug. So, on the basis of outcomes of this study, we concluded that cocrystallization process have a direct impact on the improvement of physicochemical characteristics of APIs having issues like solubility or stability without any modification and alteration of their pharmacological actions.
Background Cocrystallization process involved the understanding of interaction at molecular level between two molecules in context to their crystal packing and designing of new solids having improved physicochemical as well as pharmaceutical properties. In the present research, an attempt to increase the aqueous solubility and dissolution rate of a poorly aqueous soluble drug fenofibrate (FB) by formulation and evaluation of its cocrystals with benzoic acid (BZ) as a coformer was carried out. Results The drug and coformer were cocrystallized by using the solvent drop grinding method. For prediction of cocrystals formation, CSD (Cambridge Structure Database) software was utilized. Fourier transformation infrared spectroscopy (FTIR), X-ray diffraction (XRD) and differential scanning calorimetry (DSC) techniques were used for analysis of cocrystals. Albino rats were procured from institution as per IAEC guidelines for in vivo anti-hyperlipidaemic studies. The in vitro dissolution profile of cocrystals, pure drug, their physical mixture and marketed formulation was found to be 89%, 39%, 47% and 61%, respectively. Conclusions An enhanced anti-hyperlipidaemic activity of cocrystals was found compared to pure drug. The FB: BZ cocrystals also compared to the pure drug showed better dissolution profile and improved in vivo anti-hyperlipidaemic activity in rats. The study proved that cocrystals can promise to improve in vitro dissolution rate of poorly aqueous soluble drugs, which in turn can lead to better in vivo activities.
Fenofibrate is currently used as antihyperlipidemic drug, which has a direct effect on lowering cholesterol, triglycerides and LDL (Low-Density Lipids), VLDL (Very Low-Density Lipids) levels along with raising the level of HDL (High-density Lipids) in the blood. It also plays a significant role in insulin resistance metabolic disorder. This drug is mainly used for controlling diseases related to lipids like hypercholesterolemia, severe hypertriglyceridemia and dyslipidaemia. Along with statins, it significantly controls the level of hypercholesterolemia and hypertriglyceridemia. It belongs to the group of drugs called 'Fibrate'. Fenofibrate was patented in 1969. In 1974, it was synthesized as a derivative of clofibrate and launched at the French market. It was marketed in 1975. In 2017, it was available as a generic medicine. Presently this API is being marketed in around 85 countries all over the world. Fenofibrate is a BCS Class-II drug having poor water solubility. The poor aqueous solubility of this drug causes low bioavailability and limited permeability through the GIT membrane. This API degrades at higher temperatures and in a humid environment, with one of the resultant degradation products being fenofibric acid. In the present review, we have discussed the historical development, pharmacology, analytical profile with its physicochemical properties and ongoing research scenario on this API.
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