scholarly journals DEVELOPMENT, CHARACTERIZATION AND EVALUATION OF A PULSED-RELEASE TABLET DOSAGE FORM FOR LOW DOSE WATER SOLUBLE DRUGS

Author(s):  
◽  
Suresh Palaniswamy
Author(s):  
ARIF BUDIMAN ◽  
PATIHUL HUSNI ◽  
SHAFIRA ◽  
Tazyinul Q. Alfauziah

Objective: Cocrystallisation is a promising method in order to increase the solubility and dissolution of poorly water-soluble drugs. The aim of this study was to prepare, formulate and evaluate glibenclamide (GCM) cocrystal in direct compress tablet dosage form using saccharin (SAC) as the coformer. Methods: GCM cocrystal with various stoichiometric ratios were prepared by the solvent drop grinding method. The co-crystal was characterized by a saturated solubility test and dissolution rate test, Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), and Powder X-Ray Diffraction (PXRD). The tablet dosage form of GCM was formulated and evaluated compare with the conventional dosage form. Results: The solubility and disso­lution rate of GCM-SAC cocrystals increased significantly compared with pure GCM, especially for 1:2 of ratio. The dissolution rate of cocrystal with ratio 1:2 increased by almost 91.9% compared with pure GCM. Based on the FTIR analysis, it showed the shifting of characteristic bands of GCM in the spectrum and there was no chemical reaction in GCM cocrystal. In PXRD measurement, the new crystalline peak was detected in the crystal habit of cocrystal compared with pure GCM and coformer. The new single melting of GCM-SAC cocrystal also was detected in DSC measurement. The tablets of GCM-SAC cocrystal were successfully prepared by direct compression method which rapidly disintegrated (1 min) and has higher dissolution compared with its pure form (32.36% greater than glibenclamide after 45 min). Conclusion: The tablet dosage form of GCM cocrystal with SAC as coformer was successfully prepared, formulated and improved its solubility and dissolution rate.


Author(s):  
Poonam A. Borse Salunke ◽  
S.D. Barhate ◽  
Rupali S. Wagh

To develop an environment-safe aqueous solubility enhancement method of poorly water-soluble drugs is the need of the pharmaceutical field. Because when organic solvents were used for solubility enhancement, there are many disadvantages like carcinogenicity, environment pollutant, flammable, toxicity, and cost. The hydrotropic method has been used to enhance the aqueous solubility of poorly water-soluble drugs. Dolutegravir is slightly soluble in water. To enhance aqueous solubility various hydrotropes were used and optimized the concentration of each hydrotrope. From these hydrotropes, a mixture of 10% sodium tricitrate and 10% sodium benzoate was selected because Dolutegravir was completely soluble in a mixed hydrotropic solution. Method development and analytical validation were performed. The maximum wavelength of Dolutegravir in the hydrotropic mixture was found a 268nm, and the linearity curve in the range of 5-25µg/ml. A regression coefficient was found to be 0.999. Percent label claim, accuracy (% RSD) were found 99.58%, 0.13(80%), 0.11(100%), 0.13(120%), respectively. The LOD for Dolutegravir was determined to be 0.037μg/ mL, and LOQ was found to be 0.11μg/mL.


Author(s):  
V. Namitha

Tablet is found to be the most popular dosage form among all existing dosage form. However, in certain occurrences as a result of the huge size of dosage forms, and in the uncooperative, pediatric and dysphasia patients, it might make a few problems, to avoid this issues, another type of dosage form is created, which is known as fast dissolving tablet or mouth dissolving tablet. These are the high level dosage form which breaks down within seconds when placed on the toungue. Mouth dissolving tablets have become impressive consideration as a better option in contrast to others because of better convenience to patients. This review discusses the method of preparation, properties, mechanisms; capsules to be incorporated inside the mouth dissolving pill and evaluation of the drugs are emphasized. The solid dispersion is one of the established solubilization techniques for poorly water-soluble drugs. It is basically the interaction between drug and polymer, and hence it is found to be the determining factor in its design and performance. This review additionally summarizes our knowledge on solid dispersions both in the solid as well as liquid state.


2018 ◽  
Vol 5 (1) ◽  
pp. 1-4
Author(s):  
Devi Velmurugan ◽  
Jambulingam Munusamy ◽  
Ananda Thangadurai Subramaniam ◽  
Anandkumar Karunakaran ◽  
Abdul Latiff MKM ◽  
...  

In the present study we are reporting  dissolution, method development and validation of water soluble vitamins B1, B2 & B6 in bulk and tablet dosage form by HPTLC method. The method is based on separation of the three vitamins using HPTLC. Thin layer chromatographic plates coated with silica gel 60F254 as the stationary phase and acetonitrile:water (6:4 v/v) as mobile phase. The chromatographic analysis was carried out in the reflectance and absorbance mode at 280 nm. The method was validated with respect to linearity, accuracy and precision, limit of detection and limit of quantitation. It was then applied for analysis of vitamins B1, B2 & B6 in combined tablet dosage form. The above method developed was reproducible with good resolution and the results of analysis have been validated with correlation coefficient of 0.9990


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