Research Status of High Functional Co-processed Excipients / 中国药学杂志

Co-processed excipients are enhanced in terms of fluidity, compactness, dilution, and compressibility by restructuring the structure and function of various excipients,which has become an important basis for the high quality and high level development of high quality pharmaceutical preparations, and also an important direction for the future development of excipient industry. This paper mainly summarizes the development history, technological advantages, influencing factors, design principles, preparation methods of co-processed excipients, and summarizes the current situation of industrial development of co-processed excipients, which provides a reference for the in-depth study of composite excipients.

A Review On Co-Processed Excipients: Current And Future Trend Of Excipient Technology

There is no single-component excipient fulfills all the requisite performance to allow an active pharmaceutical ingredient to be formulated into a specific dosage form. Co-processed excipient has received much more attention in the formulation development of various dosage forms, specially for tablet preparation by direct compression method. The objective of this review is to discuss the emergence of co-processed excipients as a current and future trend of excipient technology in pharmaceutical manufacturing. Co-processing is a novel concept of combining two or more excipients that possess specific advantages that cannot be achieved using a physical admixture of the same combination of excipients. This review article discusses the advantages of co-processing, the need of co-processed excipient, general steps in developing co-processed excipient, limitation of co-processed excipient, technologies used in developing co-processing excipients, co-processed excipients in the literature, marketed products and future trends. With advantages offered by the upcoming newer combination of excipients and newer methods of co-processing, co-processed excipients are for sure going to gain attraction both from academia and pharmaceutical industry. Furthermore, it opens the opportunity for development and use of single multifunctional excipient rather than multiple excipients in the formulation.

Scaled-up production and application of co-processed excipient mannitol-HPMC in traditional Chinese medicine / 中国中药杂志

Spray drying technology was used to produce co-processed excipients mannitol- hydroxypropyl methylcellulose (HPMC), and study the scaled-up production. The consistency of powder and tablet properties before and after scale-up of co-processed excipients was compared, and their applicability in traditional Chinese medicine (TCM) powder's direct compression was tested on five TCM extracts such as gardenia extract and Radix Paeoniae Alba extract. It was shown that after scaled-up production, the key properties of co-processed excipients had little changes (such as compactability, disintegrating time, and lubrication sensitivity) or improvement (such as flowability and yield). As compared to commercially available spray-dried mannitol, co-processed excipients achieved better compactability and higher drug loading for direction compression of TCM powder. In conclusion, the mannitol-HPMC co-processed excipient, with excellent physicomechanical properties, is promising to be explored as a new excipient for direct powder compression.

Property evaluation of co-processed excipient of mannitol and polyplasdone and its application in orally disintegrating tablets / 中国药学杂志

OBJECTIVE: To evaluate the properties of co-processed excipient of mannitol and polyplasdone (Man-Cro) and apply it in direct compression of orally disintegrating tablets. METHODS: The physical and micromeritic properties of the co-processed excipient were compared with those of mannitol, polyplasdone, and physical mixture of the two compounds. The interaction between the two components was studied by using FT-IR, SEM, DSC and X-RD. The flowability and compressibility of the Man-Cro co-processed excipient were also compared with the two components by determining the angle of repose, bulk density, tap-density, Carl index and Kawakita's equation. The co-processed excipient was applied to prepare ibuprofen orally disintegrating tablets. The in vitro dissolution and bioavailability of the tablets were evaluated. RESULTS: The co-processed excipient of mannitol and polyplasdone formed novel aspheric particles after cocrystallization. The excipient showed good flowability, compressibility, filling ability and disintegrability. Compared with commercially available ibuprofen tablets, the ibuprofen orally disintegrating tablets prepared with the co-processed excipient had more rapid in vitro dissolution. And the homemade and commercially available preparations were bioequivalent in rats. CONCLUSION: The co-processed excipient is superior to physical mixture as drug carrier and suitable for preparation of orally disintegrating tablets by direct compression.

Characterisation of a novel, multifunctional, co-processed excipient and its effect on release profile of paracetamol from tablets prepared by direct compression

Objective: To characterise a novel multifunctional pharmaceutical excipient and investigate its effect on paracetamol release from tablets prepared by direct compression. Methods: The excipient was prepared by co-processing gelatinized maize starch with sodium carboxymethyl cellulose and microcrystalline cellulose in a ratio of 2:1:1, dried and pulverized into powder. The excipient formulated was characterized using Fourier transform infrared spectroscopy and differential scanning calorimetry. The excipient was used to prepare batches of tablets by direct compression with drug-excipient ratios of 1:1, 1:2, 1:3 and 1:4. Parameters evaluated on tablets include crushing strength, friability and in vitro dissolution studies. Results: Differential scanning calorimetry analysis revealed a crystalline excipient while Fourier transform infrared spectroscopy showed no interaction between the excipient and paracetamol. Tablets from all the batches gave average crushing strength values between 3.47 and 4.88 kp. The 1:1 and 1:2 tablet batches were comparable to each other while 1:3 and 1:4 were also comparable to one another in their dissolution profiles. The dissolution parameters of the 1:4 batch was faster with - m

Characterisation of a novel, multifunctional, co-processed excipient and its effect on release profile of paracetamol from tablets prepared by direct compression

To characterise a novel multifunctional pharmaceutical excipient and investigate its effect on paracetamol release from tablets prepared by direct compression. Methods: The excipient was prepared by co-processing gelatinized maize starch with sodium carboxymethyl cellulose and microcrystalline cellulose in a ratio of 2:1:1, dried and pulverized into powder. The excipient formulated was characterized using Fourier transform infrared spectroscopy and differential scanning calorimetry. The excipient was used to prepare batches of tablets by direct compression with drug-excipient ratios of 1:1, 1:2, 1:3 and 1:4. Parameters evaluated on tablets include crushing strength, friability and in vitro dissolution studies. Results: Differential scanning calorimetry analysis revealed a crystalline excipient while Fourier transform infrared spectroscopy showed no interaction between the excipient and paracetamol. Tablets from all the batches gave average crushing strength values between 3.47 and 4.88 kp. The 1:1 and 1:2 tablet batches were comparable to each other while 1:3 and 1:4 were also comparable to one another in their dissolution profiles. The dissolution parameters of the 1:4 batch was faster with - m∞(90.5%), t50% (3.5 min), t70% (11.6 min) while that of ratio 1:1 was the least with - m∞ (48.6%), m5min (23.8%). Their release kinetics followed a Korsmeyer-Peppas model with a super case-II transport mechanism. Conclusions: The drug-excipient ratios of 1:3 and 1:4 gave pharmaceutically acceptable tablets that met the British Pharmacopoeia specifications. The t50% value of the 1:4 batch of tablets may find its usefulness in formulating drugs for which a fast onset of action is desired.

Micromeritic evaluation of the direct compression excipient Parteck® ODT for orally disintegrating tablets / 中国药学杂志

OBJECTIVE: To evaluate the micromeritic properties of Parteck® ODT to provide preliminary theoretical basis for the direct compression technology of orally disintegrating tablets (ODTs).