Shilpa P Chaudhari

Orally disintegrating tablet are gaining popularity over conventional tablets due to their convience in administration and suitability for patients. The purpose of the research was to mask the intensely bitter taste of tramadol hydrochloride and to prepare orally disintegrating tablets for achievement of quick onset of action of the drug. Tramadol hydrochloride is an analgesic which has been prove to be efficient in managing relief from pain and including pain after surgery. In the present study an attempt has been made to prepare bitter less orally disintegrating tablet of tramadol hydrochloride using Eudragit EPO as a taste masking agent. Direct compression method was used for preparing tablet & super disintegrating agent like Crosspovidone, Crosscarmellose sodium and sodium starch glycolate were used to prepare blend and evaluated for pre-compression parameter such as bulk density, compressibility, and angle of repose etc. the prepared batches of tablets were evaluated for hardness, weight variation, friability, drug content, disintegration time and in-vitro dissolution profile was found to be satisfactory. It was found that Eudragit EPO being hydrophilic facilitated the increase in the uptake of the saliva thus showing the complimentary action of that superdisintegrant.

The objective of the present study was to formulate a solid self micro emulsifying drug delivery system (SMEDDS) for oral administration to improve the solubility and bioavailability of Nimorazole. Solubility was determined in various oils, surfactants and cosurfactants. Of  all the oils accessed for drug solubility, Capmul PG 8 NF showed higher solubility for drug and was better microemulsified using combination of Labrasol and Labrafac CC surfactant. The optimal formulation consists of 30% Capmul PG 8 NF, 50% Labrafac CC,20% Labrasol , was adsorbed on carriers Aerosil200, Microcrystalline cellulose (MCC) and Kaolin .The SMEDDS and solid SMEDDS were characterized for Percent transmittance (%T). Those formulations which showed higher value for %T were evaluated for droplet size, polydispersity index, ζ potential, refractive index and cloud point measurement. Effect of drug loading on droplet size, increasing dilution in different media, thermodynamic stability and in vitro dissolution was performed to observe the performance of the selected formulation. The solid SMEDDS are characterized by globule size analysis, and drug release studies of formulations are compared with plain drug. Adsorption on kaolin produced SMEDDS with the desired globule size and drug release. There was an increase in both the solubility and dissolution rate of drug in S-SMEDDS-K3 as compared to dissolution rate of pure Nimorazole.