direct compression
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Author(s):  
Madhivardhana P ◽  
Rajalakshmi A N ◽  
Padmapriya S

The aim of this research work is to formulate and evaluate Levothroxine sodium immediate release tablets prepared by direct compression method . Five formulations were evaluated for different pre and post compression parameter and in vitro drug release studies.The results of pre compression parameters of formluation 1 to 5 were compared with prescribed limits. It showed that formulation 1 to 5 powder blend exhibit good flow property and compressibility property. The disintegration time of all formulation was found to be in the range 2mins 09 secsto 4mins 03 secs.Thus, based on evaluation of different parameters it was concluded that formulation of immediate release tablet Levothyroxine sodium was successfully done and F-5 showed almost 93% drug release at 45 mins in Alkaline borate buffer( pH 10). Keywords: Thyroid hormone (T4), Immediate release tablets, Direct compression, Dissolution.


Author(s):  
Shirin Barimani ◽  
Rok Šibanc ◽  
Dejan Tomaževič ◽  
Robin Meier ◽  
Peter Kleinebudde

Author(s):  
Kawade Swapnali

Abstract: The objective of present study was to formulate and evaluate the nutraceutical tablets with different combination of herbal drugs. Material and Method: The nutraceutical tablet containing lactose and mannitol as diluent and containing natural drugs like clove and cinnamon which was prepared by direct compression method. The compressed formulations were subject to several evaluation parameters like appearance, thickness, weight variation, hardness and friability. Results: The results of all evaluation parameters of nutraceutical tablet were within the acceptable limit. Pre-compression studies of nutraceutical tablet show satisfactory results. The thickness, hardness, weight variation, and friability of nutraceutical tablet were found to in acceptable range. The in-vitro drug release of eugenol from optimised nutraceutical formulation was found to be 90.23%. Significant results were obtained from present study. Discussion: The finding of current investigation clearly found that the health promotion of the body could be done by nutraceuticals. Keywords: Direct compression, Nutraceutical, Eugenol, In-vitro drug release


Author(s):  
Farghana Begam ◽  
Rajalakshmi A. N ◽  
Padmapriya S

The study was aimed to formulate and evaluate Thyroid hormone (T3) immediate release tablets of a model Reference Listed Drug (RLD). The objective was to develop a cost effective immediate release tablet formulation and to optimize the formula in product development same that of the reference product. The ingredients used were API (thyroid hormone), lactose monohydrate (diluent), acacia (binder), maize starch (disintegrant), sodium chloride (alkalinizing agent) and magnesium stearate (lubricant). The concentration of maize starch and magnesium stearate were altered to reach the objective. Totally five formulations (F1 - F5) were prepared by direct compression method. The plan of work involved involved in the study was1 Selection of drug and excipients, 2Physico–chemical characterization and drug identification, 3Preformulation parameters of the drug, 4Pre–compression parameters for the tablet blend, 5Formulation and development of the tablet dosage form, 6Post compression parameters of the tablet and 7Stability study. The stability studies were performed as per ICH guidelines. Among all the formulations F5 was found to be the best as it showed better results than the other formulations. In vitro disintegration time and percentage drug release results shown satisfactory results. Stability study results showed no significant changes in the formulation. Keywords: Thyroid hormone (T3), Immediate release tablets, Direct compression, Dissolution.


Author(s):  
Sonali Agarkar

To effectively manage the diabetic mellitus type-II hyperglycemic problem, Gliclazide tablet is the sustained- release tablet that has been designed and fabricated for years. This research evaluated the effects of different grades of hydrophilic polymers in sustained release of Gliclazide tablets made with direct compression technique. HPC GF GRADE, HPMC K4M, and PARTECK® SRP 80 were used as the polymer, Avicel pH 101 (MCC) was used as the highly compressible diluent and Starch 1500 was used as insoluble tablet filler. Aerosil 300 and Magnesium Stearate was used as a Glidant and lubricant for improving the flow property of powder and to decrease the friction between dying wall and punches. Pre-compression characteristics were evaluated for angle of repose, bulk density, compressibility, tapped density, and Hausner's ratio and DSC, XRD, FT-IR. Tablets were prepared on a rotary tablet press machine (Eliza press) and after compression tablets were evaluated for weight variation, thickness, hardness, friability, drug content, and in-vitro drug release study. The physico-chemical properties of blends were estimated accelerated stability study was also developed formulations were kept for stability study for three months as per ICH guidelines and found to be stable. Advantages of formulating insoluble drugs such as Gliclazide is that if it is used in the preparation of capsules or tablets of the drug,its dose might be reduced which is economically beneficial.


2021 ◽  
Vol 10 (4) ◽  
pp. 54-62
Author(s):  
Ju. M. Kotsur ◽  
Ju. M. Ladytko ◽  
I. A. Narkevich ◽  
E. V. Flisyuk

Introduction. Direct compression technology is one of the most common tablet technologies. As known, many active pharmaceutical ingredients are not suitable for this technology without the addition of special excipients. A useful tool for determining the suitability of powdered materials for direct compression technology is the Sediment Delivery Model (SeDeM) method, based on the concept of Quality by Design. The presented method allows not only to assess the suitability of a material for direct compression, but also helps to predict the composition of a solid dosage form in the form of a tablet, which, in turn, leads to a significant reduction in experimental work carried out in the development of a new drug.Aim. Prediction of the compositions of matrix tablets based on sodium 4,4'-(propanediamido)dibenzoate with prolonged release, obtained by direct compression using the method of mathematical modeling SeDeM.Materials and methods. The objects of the study were the original substance sodium 4,4'-(propanediamido)dibenzoate, as well as a number of auxiliary substances, which included polymers used for dosage forms with prolonged release, a dusting component – magnesium stearate, and a filler – lactose monohydrate. Physicochemical and technological properties of APIs, explosives, obtained tablet mixtures and tablets were studied in accordance with the requirements of the State Pharmacopoeia of the Russian Federation XIV ed. and EP 9th ed.Results and discussion. The properties of the substance and excipients were assessed in accordance with the SeDeM method. It was found that the substance 4,4'-(propanediamido) sodium dibenzoate is not suitable for direct pressing due to poor flowability and low compressibility. Hypromellose Methocel K4M had good compressibility, but it did not have sufficient flowability. The other tested polymers had satisfactory properties for the direct compression technology. The composition of the tablet mixtures was calculated using the SeDeM method, the obtained tablet mixtures had satisfactory technological characteristics for obtaining tablets by direct compression. The tablets obtained as a result of the experiment also met the pharmacopoeial requirements.Conclusion. Prediction of the composition of sustained-release tablets based on the original substance sodium 4,4'-(propanediamido)dibenzoate was carried out using the SeDeM method. It was found that this method is suitable for the development of the composition of tablets based on sodium 4,4'-(propanediamido)dibenzoate.


Author(s):  
Priyanka M. Salve ◽  
Rajendra K. Surawase

Metoprolol succinate is a β1 selective antagonist used an anti-arrhythmic, antiagina, antihypertensive. sustained release tablet of metoprolol succinate were formulated using polymers. The half-life of drug is relatively 4-6 hours. The formulation of metoprolol succinate tablet were produced by direct compression or wet granulation method. The formulations were evaluated for thickness, hardness, weight variation, friability and dissolution, drug content all the physical characteristics of the formulated tablets were within acceptable limits. The dissolution studies of Metoprolol succinate sustained release tablets reflects USP specification NMT 25%by 1 hours, 20-40%by 4 hours,40-60%by 8 hours and more than 80% by 20 hrs.


Author(s):  
Sanket Jain ◽  
Sujit Pillai ◽  
Rampal Singh Mandloi ◽  
Nikhlesh Birla

Ondansetron is an anti-emetic drug which is insoluble in water. The present study was aimed to formulate and evaluate oral fast dissolving tablet of Ondansetron by Utilizing Liquisolid Compact Technique. The tablets were prepared by direct compression method and characterized by UV, FTIR studies. Six formulations (F1-F6) of ondansetron were prepared and tablets were evaluated for weight variations, hardness, thickness, friability, disintegration time, drug content and In-vitro dissolution studies gave satisfactory result. TF6 was found to be the best and acceptable formulation whose drug content was about 99.17±0.05 and percentage (%) drug release 97.49±2.03 in 10 min, high as compare to other formulation and has low disintegration time 17±0.01 as compare to other formulation which indicates that drug is rapidly dissolved and available at the site of action.


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