Vijay K

Aim of present study was to develop self emulsifying drug delivery system (SEDDS) for enhancement of solubility, dissolution rate and oral bioavailability of model drug Rilpivirine. Fifteen formulations were prepared using different oils, surfactants and co-surfactants. A pseudo ternary phase diagram was constructed to identify the self-micro emulsification region. Further, the resultant formulations were investigated for clarity, phase separation, drug content, % transmittance, globule size, freeze-thaw stability and in vitro dissolution studies. On the basis of dissolution profile and other above mentioned studies, F5 was found to be the best formulation of Rilpivirine SEDDS which contains Captex 355(Oil), Kolliphor RH 40 (Surfactant) and PG (Co-surfactant). In vivo studies revealed that the oral bioavailability of Rilpivirine from SEDDS was 2.2-fold higher compared to that of pure Rilpivirine suspension in rats, suggesting a significant increase (p

The objective of the present work was to make different crystal forms of Amlodipine besylate. It was planned to prepare crystal forms using solvents of varying polarity and by change of phase and it was extended to characterize the prepared crystal forms using techniques like Scanning electron microscopy, IR spectroscopy, and Differential scanning calorimetry and/or X-ray diffractometry. Based on above these studies Amlodipine besylate pure was exisisted as Amlo-I, Amlo-II, Amlo –III and Amlo-IV forms were different in size and shape.

Oral drug delivery has been known for decades as the most widely utilized route of administration among all the routes. United State Food and Drug Administration (FDA) defined ODT as “a solid dosage form containing medicinal substance or active ingredients which disintegrate rapidly usually within a matter of second when placed upon the tongue. Propranolol is a nonselective beta-adrenergic blocker and is almost completely absorbed following oral administration. However , most of drug is undergoes high first-pass metabolism by the liver and on average, only about 25% of propranolol reaches the systemic circulation. The present study investigated to development of novel fast dissolving tablet of Propranolol HCL which was by first pass metabolism, provide rapid onset of action and increasing the bioavailability of the drug. The fast dissolving tablets were prepared by Direct compression method by using different superdisintegrant like Crosspovidone, crosscarmellose sodium, sodium starch glycolate etc. The advantage of this formulation is such that in case of hypertension attack patient can take the drug without the usage of water. Therefore the main objective of the present work is to develop orodispersible tablets of Propranolol hydrochloride to improve bioavailability, disintegration time, dissolution efficacy and patient compliance.

The different solvent extracts of Scleroderma bermudense belongs to the family Sclerodermataceae collected from semi evergreen forest region (13˚51'56.30"N, 75˚03'12.50"E) which is located in Haniya, Hosanagar taluk, Shimoga district, Karnataka was subjected to phytochemical analysis for secondary metabolites and antifungal screening by agar well diffusion method against plant and human pathogenic fungi viz., A. alternate, A. flavus, A. solani, A. tomentosa, C. capsici, C. dematium, C. lindemuthianum, F. oxysporum, F. solani, M. gypseum, T. equinum, T. kanei, C. albicans, C. indicum, C. krusei, C. merdarium, C. zonatum, E. floccosum and T. rubrum. Extracts were found to contain steroids, saponins, glycosides, flavonoids and phenols. The extract also showed significant antifungal activity against C. albicans, C. indicum, C. merdarium, F. oxysporum, C. dematium, T. equinum, A. flavus C. capsici, F. solani, C. kruesi and C. lindemuthianum, whereas least activity showed against A. solani, M. gypseum and does not showed inhibition zone against A. alternate, A. tomentosa. T. kanei, C. zonatum, E. floccosum and T. rubrum. However, the activity was less than the standard Clotrimazole, Fleuconazole, Mancozeb and Captan. The extract shows increasing inhibitory activity with increase in concentration (12.5%-100%).While comparing the solvent studied, petroleum ether and methanol extracts showed highest response in resisting microbial growth than chloroform.

Drug delivery through oral route is widely accepted through all over world. Mouth dissolving tablet is most suitable tablet than conventional tablet. The main characteristic which is in the favors of mouth dissolving tablet is that there is no need of water to take it. Due to this it become more suitable dosage form for pediatric and geriatric patients. Since bioavailability of mouth dissolving tablet is high than conventional tablet, and mixing of piperine with it make them much more advance dosage form. Due to the addition of piperine in the drug, the dose size is reduced, and enhanced the onset of action. Addition of piperine with norfloxacin also increase the antibacterial activity and make them more effective.

Barlaria buxifolia Linn is one of the medicinal plants well documented traditionally in Ayurveda system of medicine and is highly valued in modern medicine owing to the presence of alkaloids, flavonoids, tannins, phenolic compounds, steroids. The plant is reported to contain phenol, flavonoid and tannin; phenolic and flavonoids compounds are reported to possess antioxidant and hence the plant may be used as organ protective. Keeping this in view, the plant was analysed for total phenol, flavonoid and tannin content. Catechol, quercetin and tannic acid reagents were used as standards for calibration of total polyphenols, flavonoids and tannins respectively. The quantification of total polyphenol, falvonoid and tannin content showed 14.65mg/gm catechol, 26.80mg/gm quercetin and 11.32mg/gm tannic acid equivalent respectively, the study indicates that the leaves of Barlaria buxifolia Linn exhibits the highest flavonoid, phenolic and tannin content. It can be used potentially as a readily accessible source of natural antioxidant. Key words: Catechol, Phenol, Flavonoid, Quercetin and Tannin, Barlaria buxifolia Linn

  The present study aimed at evaluating the in vitro antimicrobial activity of various extracts of the stem bark of Bauhinia variegata Linn. In the current study, the petroleum ether, chloroform, ethyl acetate, ethanol and aqueous extract of stem bark of B. variegata L. was tested against standard bacterial and fungal cultures. The test was performed by agar well diffusion method on nutrient agar media and Sabouraud’s dextrose media for bacterial and fungal cultures respectively. Among the solvent extracts, ethanolic extract was effective against all the tested bacteria and fungi. Ethanolic extract exhibited maximum inhibitory activity against Klebsiella. And the least activity was observed for Staphylococus aureus. For fungi ethanolic extract was more effective against Aspergillus fumigates. Key words: Antibacterial, Antifungal, Bauhinia variegata L.

  Itraconazole, a poorly water soluble antimycotic agent, is promising agent for various diseases. To improve the solubility of itraconazole, the inclusion compound of Itraconazole with β-cyclodextrin was prepared by spray drying, solvent evaporation, kneading, lyophilization, physical mixture method and characterized by solubility, scanning electron microscopy, differential scanning calorimetry, FTIR and dissolution study. DSC and FTIR confirmed the formation of complex. The solubility of the prepared complex was found to be improved. Itraconazole complex by spray drying method and Itraconazole showed 95.65 % and 80.55% of drug release at the end of 48 h in dissolution study. It was concluded that the complex of itraconazole may be of potential use for improving the solubility of itraconazole and hence its bioavaibility.