Formulation Development, Evaluation and Comparative Study of Effects of Super Disintegrants in Cefixime Oral Disintegrating Tablets

The present work was aimed at formulation development, evaluation and comparative study of the effects of superdisintegrants in Cefixime 50 mg oral disintegrating tablets. The superdisintegrants used for the present study were sodium starch glycolate and crosscarmellose sodium. The formulated tablets were evaluated for various tableting properties, like hardness, thickness, friability, weight variation, disintegration time and dissolution rate. Comparative evaluation of the above-mentioned parameters established the superiority of the tablets formulated with crosscarmellose sodium to those formulated with sodium starch glycolate

Hordeum Vulgare Hull in the Design of Fast Disintegrating Tablets

In the present study, fast disintegrating tablets were designed with a view to enhance patient compliance. In this method, the hull of Hordeum vulgare, cross carmellose sodium, and sodium starch glycolate were used as superdisintegrants (4 and 6%), along with microcrystalline cellulose and mannitol, to enhance mouth feel. The prepared batches of tablets were evaluated for hardness, friability, drug content uniformity, wetting time, water absorption ratio and in vitro dispersion time. Based on the in vitro dispersion time, the formulations were tested for the in vitro drug release pattern. Tablets having H. vulgare hull showed the release profile comparable to those tablets having sodium starch glycolate and cross carmellose sodium

A comparative physicochemical and pharmacological evaluation of dexamethasone sodium phosphate and betamethasone sodium phosphate mucoadhesive gels for the treatment of oral submucous fibrosis in rats

The present study is aimed to formulate steroidal oral mucoadhesive gels of dexamethasone sodium phosphate and betamethasone sodium phosphate. Six gel formulations each of dexamethasone sodium phosphate and betamethasone sodium phosphate prepared using two different polymers carboxymethyl cellulose sodium and hydroxypropyl methylcellulose, in variable proportions. All the formulations subjected for assessment of various physicochemical parameters and mechanical properties. The formulations BSP5 and DSP5, both containing 1.25 % carboxymethyl cellulose sodium, 1.25 % hydroxypropyl methylcellulose, exhibiting mucoadhesive strength of 12.300 ± 0.004 and 12.600 ± 0.01, adhesiveness of 28.04 ± 00 and 30.02 ± 00, cohesiveness of 28.04 ± 00 and 30.02 ± 00, drug release of 86.869 ± 0.380 % and 88.473 ± 0.457 % respectively were considered as promising ones and were further subjected for stability studies and in vivo study in male albino rats. Formulation DSP5 upon oral application for 4 months in arecoline induced oral submucous fibrosis rats, showed more than 80 % reduction in fibrosis as compared with BSP5 which showed nearly 50 % reduction. These results were concluded on the basis of histopathological profile and weight gain among the experimental animals during in vivo study. Hence, DSP5 by minimizing the painful injuries and morbidities justifies being suitable noninvasive model for OSMF treatment

Preparation and evaluation of orodispersible tablets of pheniramine maleate by effervescent method

In the present work, orodispersible tablets of pheniramine maleate were designed with a view to enhance patient compliance by effervescent method. In the effervescent method, mixture of sodium bicarbonate and tartaric acid (each of 12% w/w concentration) were used along with super disintegrants, i.e., pregelatinized starch, sodium starch glycolate, croscarmellose sodium and crospovidone. The prepared batches of tablets were evaluated for hardness, friability, drug content uniformity and in vitro dispersion time. Based on in vitro dispersion time (approximately 60 s), three formulations were tested for in vitro drug release pattern (in pH 6.8 phosphate buffer), short-term stability (at 40±2°/75±5% RH for 3 mo) and drug-excipient interaction (IR spectroscopy). Among three promising formulations, formulation ECP(4) containing 4% w/w crospovidone and mixture of sodium bicarbonate and tartaric acid (each of 12% w/w) emerged as the overall best formulation (t(70%) = 1.65 min) based on the in vitro drug release characteristics compared to commercial conventional tablet formulation. Short-term stability studies on the formulations indicated no significant changes in the drug content and in vitro dispersion time (P < 0.05)

Formulation Design and Optimization of Fast Dissolving Clonazepam Tablets

Fast dissolving tablets of clonazepam were prepared by direct compression method with a view to enhance patient compliance. A 32 full factorial design was applied to investigate the combined effect of two formulation variables: amount of crospovidone and microcrystalline cellulose. Crospovidone (2-8% w/w) was used as superdisintegrant and microcrystalline cellulose (20-40% w/w) was used as diluent, along with directly compressible mannitol to enhance mouth feel. The tablets were evaluated for hardness, friability, thickness, drug content uniformity, in vitro dispersion time, wetting time and water absorption ratio. Based on in vitro dispersion time (approximately 16 s); the formulation containing 2% w/w crospovidone and 40% w/w microcrystalline cellulose was found to be promising and tested for in vitro drug release pattern (in pH 6.8 phosphate buffer). Short-term stability (at 40°/75% relative humidity for 3 mo) and drug-excipient interaction. Surface response plots are presented to graphically represent the effect of independent variables on the invitro dispersion time. The validity of the generated mathematical model was tested by preparing two extra-design checkpoints. The optimized tablet formulation was compared with conventional commercial tablet formulation for drug release profiles. This formulation showed nearly five-fold faster drug release (t50% 3.5 min) compared to the conventional commercial tablet formulation (t50% 16.4 min). Short-term stability studies on the formulation indicated that there are no significant changes in drug content and in vitro dispersion time (P<0.05)

Design of Fast Disintegrating Tablets of Prochlorperazine Maleate by Effervescence Method

In the present work, fast disintegrating tablets of prochlorperazine maleate were designed with a view to enhance patient compliance by effervescent method. In this method, mixtures of sodium bicarbonate and anhydrous citric acid in different ratios along with crospovidone (2-10% w/w), croscarmellose sodium (2-10% w/w) were used as superdisintegrants. Estimation of prochlorperazine maleate in the prepared tablet formulations was carried out by extracting the drug with methanol and measuring the absorbance at 254.5 nm. The prepared formulations were further evaluated for hardness, friability, drug content uniformity and in vitro dispersion time. Based on in vitro dispersion time (approximately 13-21 s), two promising formulations (one from each super-disintegrant) were tested for in vitro drug release pattern in pH 6.8 phosphate buffer, short-term stability (at 40°/75% relative humidity for 3 mo) and drug-excipient interaction (IR spectroscopy). Among the two promising formulations, the formulation containing 10% w/w of crospovidone and mixture of 20% w/w sodium bicarbonate and 15% w/w of citric acid emerged as the overall best formulation (t50% 6 min) based on drug release characteristics in pH 6.8 phosphate buffer compared to commercial conventional tablet formulation (t50% 17.4 min). Short-term stability studies on the promising formulations indicated that there are no significant changes in drug content and in vitro dispersion time (p<0.05)

Preparation and Evaluation of Solvent Deposited Systems of Felodipine

1044-1046Solvent deposited (SD) systems of felodipine were prepared with biologically inactive carriers like microcrystalline cellulose (MCC), lactose, potato starch (PS), and aerosil in different ratios. These systems were evaluated for drug content uniformity, drug carrier interactions, and drug release profiles. Drug-carrier interactions were evaluated by using Differential Scanning Calorimetry (DSC), IR, and TLC. The results of drug-carrier interaction studies indicated that there was no interaction between the drug and the carrier. Release of drug from SD system was markedly increased than that of the corresponding physical mixture. The increase in the order of dissolution rate of felodipine from SD systems was: MCC > aerosil >PS > lactose

Plantago ovata Mucilage in the Design of Fast Disintegrating Tablets

In the present work, fast disintegrating tablets of prochlorperazine maleate were designed with a view to enhance patient compliance by direct compression method. In this method mucilage of Plantago ovata and crospovidone were used as superdisintegrants (2-8% w/w) along with microcrystalline cellulose (20-60% w/w) and directly compressible mannitol (Pearlitol SD 200) to enhance mouth feel. The prepared batches of tablets were evaluated for hardness, friability, drug content uniformity, wetting time, water absorption ratio and in vitro dispersion time. Based on in vitro dispersion time (approximately 8 s), the two formulations were tested for the in vitro drug release pattern (in pH 6.8 phosphate buffer), short-term stability (at 40°/75% relative humidity for 3 mo) and drug-excipient interaction (IR spectroscopy). Among the two promising formulations, the formulation prepared by using 8% w/w of Plantago ovata mucilage and 60% w/w of microcrystalline cellulose emerged as the overall best formulation (t50% 3.3 min) based on the in vitro drug release characteristics compared to conventional commercial tablets formulation (t50% 17.4 min). Short-term stability studies on the formulations indicated that there are no significant changes in drug content and in vitro dispersion time (p<0.05)