Drug development and industrial pharmacy
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Comparative Study
Evaluation of the tamper-resistant properties of biphasic immediate-release/extended-release oxycodone/acetaminophen tablets.
Abuse potential of extended-release (ER) opioid tablets increases if tampering causes rapid opioid release. ⋯ IR/ER OC/APAP tablets may have less potential for abuse involving tampering compared with IR OC/APAP tablets.
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The objective of this research was to quantify the α-mangostin content in mangosteen pericarp (MP) ointment as a colloidal dispersion using near-infrared (NIR) spectroscopy. Various concentrations of MP (IP and EP) ointments containing both internal and external pericarps were prepared and the NIR spectra of these ointments were measured. The NIR spectrum of each ointment was correlated with α-mangostin concentration by partial least square (PLS) regression. ⋯ The biases of the IP and EP ointment models were 0.23 and 0.00, respectively. The results showed that NIR could be a useful tool for the quality control of herbal medicine in hydrophilic ointment without any sample preparation. It could predict α-mangostin content in hydrophilic ointment at very low concentration with sufficient accuracy.
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The escalating abuse of prescription drugs has recently spawned the development of novel drug formulations resistant to various methods of tampering and misuse. ⋯ Prodrug and agonist/antagonist formulations are popular in marketed products, while solid and gel approaches are more recent additions. However, the inclusion of aversive agents or enzyme inhibitors in a product is proving to be more difficult to develop. Overall, detailed formulation and manufacturing methods still remain rather elusive to protect public health. Moreover, these innovative formulations are mostly untried in the general population and their abuse deterring effects has yet to be proven.
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The aim of the presented work was to develop Ca-alginate microparticles for oral administration of naproxen reinforced with chitosan oligosaccharide (COS) with a special interest to examine the potential of COS for improvement of microparticles stability in simulated intestinal fluid (SIF). ⋯ The obtained findings proved that COS could be used as an effective cross-linking agent for improvement of Ca-alginate microparticles stability in SIF, allowing prolonged release of the encapsulated drug after oral administration.
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The aim of the present study was to construct an innovative microemulsion-based patch for simultaneously transdermal delivery of huperzine A (HA) and ligustrazine phosphate (LP). The pseudo-ternary phase diagrams for microemulsion region were developed using oleic acid as oil, Cremophor RH40 as a surfactant, and ethanol as a cosurfactant. 1,8-cineole was added to the microemulsion as a penetration enhancer. The microemulsion-based transdermal patches were prepared by the lamination technique. ⋯ The results of the pharmacodynamic studies indicated that the transdermal combination therapy of HA and LP showed more benefits for fighting against amnesia in comparison with monotherapy. The anti-amnesic effects were also confirmed in scopolamine-induced amnesia rats after transdermal administration at multiple doses for 9 consecutive days, and the efficacy exhibited a dose-dependent manner. As a conclusion, the microemulsion-based transdermal patch containing HA and LP might provide a feasible strategy for the prevention of Alzheimer's disease.