Novel study in fast dissolving drug delivery system: a review.

Novel drug delivery systems are becoming increasingly sophisticated as pharmaceutical scientists acquire a better understanding of the physicochemical and bio-chemical parameters pertinent to their performance. Despite tremendous advancements in drug delivery, the oral route remains the perfect route for the administration. Novel drug delivery system assists to achieve better patient compliance. Fast dissolving tablets are one of them.FDT have benefits such as accurate dosing, easy portability and manufacturing, good physical and chemical stability and an ideal alternative for pediatric and geriatric patients. FDDT formulation combines the advantage of both liquid and conventional tablet formulation while also offering advantage over both traditional dosage forms. Some tablets are designed to dissolve in saliva remarkably fast, within a few seconds, and are true fast- dissolving tablets. Others contain agents to enhance the rate of tablet disintegration in the oral cavity, and are more appropriately termed fast-disintegrating tablets, as they may take up to a minute to completely disintegrate.

A comprehensive review on fast dissolving tablet technology.

Oral delivery is currently the gold standard in the pharmaceutical industry where it is regarded as the safest, most convenient and most economical method of drug delivery having the highest patient compliance. Fast dissolving tablets (FDTs) have received ever-increasing demand during the last decade, and the field has become a rapidly growing area in the pharmaceutical industry. Upon introduction into the mouth, these tablets dissolve or disintegrate in the mouth in the absence of additional water for easy administration of active pharmaceutical ingredients. The popularity and usefulness of the formulation resulted in development of several FDT technologies. Fast- or mouth dissolving tablets have been formulated for pediatric, geriatric, and bedridden patients and for active patients who are busy and traveling and may not have access to water. This review describes the various formulation aspects, disintegrants employed and technologies developed for FDTs, patent formulation, evaluation tests, and marketed formulations.

Formulation and evaluation of fast dissolving tablets of Granisetron hydrochloride by vacuum drying technique.

The purpose of this investigation was to develop fast dissolving tablets (FDTs) of Granisetron hydrochloride (GHCl) by vacuum drying technique using camphor as subliming agent together with croscarmellose sodium (CCS), crospovidone (CP), sodium starch glycolate (SSG) and plantago ovate (PO) as superdisintegrants. The prepared formulations were evaluated for pre-compressional and post-compressional parameters. The compatibility of drug with other ingredients was checked by FTIR studies, the results revealed that there was no interaction between dug and other excipients. The values of pre-compressional parameters were within prescribed limits and indicated good free flowing properties. In all the formulations the hardness test indicates good mechanical strength. Friability of all formulations was less than 1. Drug content was found to be high (≥ 100.44%) and uniform in all the formulations. The tablet thickness was found to be 3.11 – 3.34. The weight variation results revealed that average percentage deviation was less then ± 7.5 %, which provides good uniformity in all formulations. The disintegration time of the tablets found to be in the range of 18 to 44 sec. The formulations SBC4, SBP4, SBG4, and SBO4 50 % of drug released in 0.41, 0.48, 0.59 and 0.47 min, and 90 % of drug released in 2.01, 3.05, 4.01 and 2.51min. Stability study carried out as per ICH guidelines for three months and results revealed that upon storage disintegration time of tablets decreased significantly (p<0.05). The release of drug from the SBC4 and SBO4 formulations was quick when compared to other formulations. It was concluded that fast dissolving tablets with improved Granisetron hydrochloride dissolution could be prepared by sublimation of tablets containing suitable subliming agent.

Orally disintegrating tablets : formulation, preparation techniques and evaluation.

Oral delivery is currently the gold standard in the pharmaceutical industry where it is regarded as the safest, most convenient and most economical method of drug delivery having the highest patient compliance. Formulation of a convenient dosage form for oral administration, by considering swallowing difficulty especially in case of geriatric and pediatric patient leads to poor patient compliance. To troubleshoot such problems a new dosage form known as orally disintegrating tablet (ODT), has been developed which rapidly disintegrate & dissolve in saliva and then easily swallowed without need of water which is a major benefit over conventional dosage form. In addition, patients suffering from dysphasia, motion sickness, repeated emesis and mental disorders prefer such preparation because they cannot swallow large quantity of water. Further, drugs exhibiting satisfactory absorption from the oral mucosa or intended for immediate pharmacological action can be advantageously formulated in such type of dosage form. The popularity and usefulness of the formulation resulted in development of several ODT technologies for preparation. The current article is focused on ideal characteristics, advantages and disadvantages, formulation aspects, formulation technologies, evaluation of products and future potential. Various marketed preparations along with numerous scientific advancements made so far in this avenue have also been discussed.

Formulation and evaluation of fast dissolving tablets of granisetron hydrochloride.

Fast dissolving drug delivery systems offers a solution for those patients having difficulty in swallowing tablets/capsules etc. Granisetron hydrochloride was selected as the model drug. In the present study, an attempt had been made to prepare fast dissolving tablets of the drug using , plantago ovata mucilage and sodium starch glycolate as super disintegrants (2.5 to 10 % w/w) following by direct compression method. Formulations were evaluated for precompressional parameters such as angle of repose, carr’s compressibility index and hausner’s ratio. The tablets were evaluated for uniformity of weight, thickness, hardness, friability, drug content, wetting time, in-vitro dispersion time and in-vitro dissolution study. The prepared tablets were characterized by FTIR studies. No chemical interaction between drug and exciepients was confirmed by FTIR studies.