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1.
Prim Health Care Res Dev ; 25: e40, 2024 Sep 20.
Artículo en Inglés | MEDLINE | ID: mdl-39301599

RESUMEN

BACKGROUND: The prevalence of depression is gradually increasing worldwide with an increasing utilization of antidepressants. Nevertheless, despite their lower costs, generic-brand antidepressants were reported to be less prescribed. We aimed to examine the costs of reference- versus generic-brand antidepressant prescriptions in primary care practice. METHODS: This cross-sectional study included electronic prescriptions for adult patients that contained antidepressants (World Health Organization's Anatomical Therapeutic Chemical (ATC) code: N06A), which were generated by a systematically selected sample of primary care doctors (n = 1431) in Istanbul in 2016. We examined the drug groups preferred, the reference- versus generic-brand status, and pharmacotherapy costs. FINDINGS: The majority of the prescriptions were prescribed for women (71.8%), and the average age of the patients was 53.6 ± 16.2 years. In prescriptions with a depression-related indication (n = 40 497), the mean number and cost of drugs were 1.5 ± 1.0 and 22.7 ± 26.4 United States Dollar ($) per prescription, respectively. In these prescriptions, the mean number and cost of antidepressants per encounter were 1.1 ± 0.2 and $17.0 ± 13.2, respectively. Reference-brand antidepressants were preferred in 58.2% of depression-related prescriptions, where the mean cost per prescription was $18.3 ± 12.4. The mean cost per prescription of the generics, which constituted 41.8% of the antidepressants in prescriptions, was $15.1 ± 11.4. We found that if the generic version with the lowest cost was prescribed instead of the reference-brand, the mean cost per prescription would be $12.9 ± 11.2. CONCLUSIONS: Our study highlighted the substantial pharmacoeconomic impact of generic-brand antidepressant prescribing, whose preference over reference-brands could reduce the cost of antidepressant medication treatment by 17.5% in primary care, which could be approximately doubled if the cheapest generic antidepressant had been prescribed.


Asunto(s)
Antidepresivos , Medicamentos Genéricos , Atención Primaria de Salud , Humanos , Medicamentos Genéricos/uso terapéutico , Medicamentos Genéricos/economía , Antidepresivos/uso terapéutico , Antidepresivos/economía , Femenino , Estudios Transversales , Masculino , Persona de Mediana Edad , Atención Primaria de Salud/estadística & datos numéricos , Atención Primaria de Salud/economía , Adulto , Anciano , Turquía , Economía Farmacéutica , Pautas de la Práctica en Medicina/estadística & datos numéricos , Depresión/tratamiento farmacológico , Costos de los Medicamentos/estadística & datos numéricos
2.
Drug Discov Ther ; 18(4): 265-268, 2024 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-39198204

RESUMEN

Generic medications contain the identical active ingredient in the same concentration as their branded counterparts and are administered in the same manner, aiming to deliver comparable efficacy, dosage, and clinical outcomes. Nevertheless, variations in additives and formulation processes, particularly noticeable in topical medications, can influence factors like ease of use and patient adherence. Therefore, in this study, we aimed to compare the rheological attributes of branded and generic injectable ointments, assessing disparities in formulation performance and their impact on patient care. Posterisan® Forte and Hemoporison® ointments were used as the branded and generic versions, respectively, and their viscosity, ductility, and viscoelastic properties were evaluated. Posterisan® Forte showcased enhanced spread ability, maintaining uniform flow characteristics across varying temperatures, whereas Hemoporison® displayed pronounced thixotropic properties and stiffness, suggesting potential benefits for applications necessitating reversible viscosity adjustments and heightened rigidity. Despite sharing identical additives, observable differences in physical characteristics highlight the necessity of understanding formulation traits, which could influence ointment behavior. Alterations in fluidity and viscosity may affect how patients perceive and apply the medication, potentially influencing treatment outcomes and the occurrence of adverse effects.


Asunto(s)
Medicamentos Genéricos , Pomadas , Reología , Viscosidad , Medicamentos Genéricos/administración & dosificación , Medicamentos Genéricos/química , Humanos , Inyecciones , Elasticidad , Composición de Medicamentos , Química Farmacéutica
3.
Mult Scler Relat Disord ; 88: 105760, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38991404

RESUMEN

The use of generic specialty medications amongst individuals with multiple sclerosis (MS) has expanded due to an increase in the number of available agents. We describe a woman who was denied continued use of brand name teriflunomide (AubagioⓇ), despite being clinically stable for 2.5 years, and switched to generic teriflunomide. She experienced a significant spinal cord exacerbation within a few months of starting treatment. We analyzed 3 generic teriflunomide agents, including the one used for treatment, in addition to AubagioⓇ. The generic teriflunomide used by our patient contained 55.5 % content of the labeled amount, well below U.S. FDA specifications.


Asunto(s)
Crotonatos , Medicamentos Genéricos , Hidroxibutiratos , Nitrilos , Toluidinas , Humanos , Femenino , Medicamentos Genéricos/efectos adversos , Crotonatos/efectos adversos , Crotonatos/uso terapéutico , Crotonatos/administración & dosificación , Toluidinas/efectos adversos , Toluidinas/uso terapéutico , Toluidinas/administración & dosificación , Esclerosis Múltiple/tratamiento farmacológico , Persona de Mediana Edad , Adulto
4.
Int J Clin Pharm ; 2024 Jul 11.
Artículo en Inglés | MEDLINE | ID: mdl-38990456

RESUMEN

The national centralized drug procurement (NCDP) policy, known as the "4 + 7" policy in China, has transformed pharmaceutical procurement and access by leveraging healthcare institutions' collective buying power to reduce drug prices substantially. This policy has profoundly impacted drug pricing mechanisms, healthcare expenditures, market dynamics, and the quality of available drugs. This commentary evaluates the efficacy, challenges, and broader implications of the NCDP, summarizes the current state of post-marketing monitoring of selected generic drugs for centralized procurement, and presents relevant considerations.

5.
Acta Med Philipp ; 58(4): 26-39, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38966608

RESUMEN

Objectives: The Bioavailability/Bioequivalence Unit (BA/BE Unit) of the Department of Pharmacology and Toxicology, College of Medicine, University of the Philippines Manila which has not been operational since 2012, is due for renewal of its accreditation. To date, there are only three Philippine Food and Drug Administration-accredited laboratories that perform bioequivalence studies in the Philippines. One of the prerequisites of registering specific generic medicines is the conduct of Bioequivalence (BE) studies which are performed to ensure that the generic drug is at par with the innovator drug. Thus, this study aimed to determine the feasibility of re-establishing the BA/BE Unit as a bioequivalence testing center. Methods: The feasibility study done is a qualitative descriptive analysis based on expansive literature review and performance of SWOT analysis within the BA/BE unit. Literatures were selected based on its assessed relevance to the study. The databases checked were PubMed and Google Scholar. The terms used were from the Medical Subject Heading (MeSH) including feasibility studies, therapeutic equivalency, and generic drugs. Literature review was performed on the factors affecting the four types of feasibility studies (market, technical, financial, and organizational). A SWOT analysis of the BA/BE Unit was done through the review of records and documents of previous BE studies and focus group discussion among the BA/BE Unit team members. Results: The BA/BE Unit conducted 24 bioequivalence studies from 2006-2009 and still receives inquiries from drug companies. It implements its QMS throughout the pre-analytical, analytical, and post-analytical stages of the workflow. Its organizational structure consists of qualified professionals with updated GCP and GLP certificates. Because of the adequately equipped facility, lower honoraria for government-employed personnel, and lower expenses for laboratories and in-patient admissions, the cost of conducting a bioequivalence study in the BA/BE Unit will be lower than in other BE centers. Conclusion: Based on the SWOT analysis and market, technical, financial, and organizational considerations, re-establishing the BA/BE Unit as a bioequivalence testing center is feasible.

6.
Cureus ; 16(6): e62401, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-39006689

RESUMEN

A generic medication is a copy of an original drug for which the patent has expired. It contains the same active substances and is equivalent in terms of safety, efficacy, and pharmaceutical quality. Generic drugs are produced after the expiration of the brand-name drug's patent, which enables greater competition and reduces costs for patients and healthcare systems. They are subjected to strict regulatory and quality control standards to ensure compliance with pharmaceutical norms. This study aims to determine the current status of generic drug prescribing within the medical departments of the Mohammed VI University Hospital (UH) of Marrakesh. This is a cross-sectional study with descriptive and analytical aims, involving 224 prescriptions issued in the medical departments of the Mohammed VI University Hospital (UH) of Marrakesh. To obtain the data required for the study, we included medical records, prescription sheets, and prescriptions delivered to hospitalized patients. In our study, 224 prescriptions were analyzed, with an overall total of 989 prescribed drugs, and a mean of 4.42 +- 2.39 drugs per prescription. Prescriptions from the Psychiatry Department accounted for 258 (26.09%) of total prescriptions, followed by those from the Cardiology Department at 130 (13.14%) and the Internal Medicine Department at 114 (11.53%). The generic prescribing rate for the UH's medical departments was 403 (40.75%). The Oncology Department had the highest generic prescribing rate (27 (64.29%)), followed by the Infectious Diseases and Rheumatology departments, at 29 (63.04%) and 34 (60.71%), respectively. In contrast, the Psychiatry Department had a generic prescribing rate of just 54 (20.93%). The most frequently prescribed classes as generic drugs were gastric antisecretory agents at 39 (100%), antiemetics at 32 (94.12%), and antivirals at nine (81.82%). The vast majority of drugs, 896 (90.59%), were reimbursable. In conclusion, we have noted that the generic drug prescription rate at the UH remains average compared with other institutions, and needs to be improved to optimize resources and control healthcare costs.

7.
BMC Med Res Methodol ; 24(1): 82, 2024 Apr 05.
Artículo en Inglés | MEDLINE | ID: mdl-38580928

RESUMEN

BACKGROUND: This retrospective analysis aimed to comprehensively review the design and regulatory aspects of bioequivalence trials submitted to the Saudi Food and Drug Authority (SFDA) since 2017. METHODS: This was a retrospective, comprehensive analysis study. The Data extracted from the SFDA bioequivalence assessment reports were analyzed for reviewing the overall design and regulatory aspects of the successful bioequivalence trials, exploring the impact of the coefficient of variation of within-subject variability (CVw) on some design aspects, and providing an in-depth assessment of bioequivalence trial submissions that were deemed insufficient in demonstrating bioequivalence. RESULTS: A total of 590 bioequivalence trials were included of which 521 demonstrated bioequivalence (440 single active pharmaceutical ingredients [APIs] and 81 fixed combinations). Most of the successful trials were for cardiovascular drugs (84 out of 521 [16.1%]), and the 2 × 2 crossover design was used in 455 (87.3%) trials. The sample size tended to increase with the increase in the CVw in trials of single APIs. Biopharmaceutics Classification System Class II and IV drugs accounted for the majority of highly variable drugs (58 out of 82 [70.7%]) in the study. Most of the 51 rejected trials were rejected due to concerns related to the study center (n = 21 [41.2%]). CONCLUSION: This comprehensive analysis provides valuable insights into the regulatory and design aspects of bioequivalence trials and can inform future research and assist in identifying opportunities for improvement in conducting bioequivalence trials in Saudi Arabia.


Asunto(s)
Medicamentos Genéricos , Humanos , Equivalencia Terapéutica , Medicamentos Genéricos/uso terapéutico , Arabia Saudita , Estudios Retrospectivos , Tamaño de la Muestra
8.
Saudi Pharm J ; 32(4): 102021, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38497088

RESUMEN

Background and objectives: Generic medications are cost-effective without compromising therapeutic outcomes. Therefore, the goal of this study was to investigate, using a cross-sectional study design, the factors influencing Saudi Arabian consumers' preferences between innovator and generic medications. Methods: This cross-sectional study was carried out in Saudi Arabia using a Google survey form. For data collection, a simple random sampling strategy was used. The recruited participants were surveyed using a validated questionnaire that focused on six influencing domains: physician, pharmacist, perceived effectiveness, price, information availability, and confidence based on prior experience. The obtained data was used to analyze factors that have an association with any of the six domains using multinomial regression analysis. A correlation analysis was performed to examine the relationship between domains. Results: The 317 participants included 64.4 % females, 52 % aged ≥ 26, and a large proportion of Saudi nationals (82.6 %) and university graduates (78.9 %). Being employed (OR:3.029; P = 0.006; CI: 6.715-1.366), a healthcare providers (OR:2.298; P = 0.043; CI: 5.151-1.025), and having insurance coverage (OR:1.908; P = 0.017; CI: 3.245-1.122) had a greater influence on medication selection. Participants with linguistic and business educational backgrounds (OR:3.443; P = 0.022; CI: 9.950-1.191), those living in the northern region of Saudi Arabia (OR:3.174; P = 0.009; CI: 7.585-1.328), having chronic ailments (OR:3.863; P = 0.013; CI: 11.274-1.324), and possess insurance (OR:1.748; P = 0.039; CI: 2.971-1.028) get readily influenced by pharmacist. People who were married and lived in Saudi Arabia's southern region were influenced by perceived effectiveness when choosing medicine. Participants from the northern region were found to be influenced by the price of the medicines, information about the medicines, and confidence based on previous experience. The price of medicines has a significant impact on those suffering from chronic diseases. At a significant level of P = 0.01, all six influencing domains were found to be positively correlated with each other. Conclusion: The study shows that healthcare providers, drug prices, perceived efficacy, and information availability all have a big influence on the Saudi Arabian population's choice of medications. Educational background, location, and chronic disease status are associated with several influencing domains. Aside from public awareness campaigns, healthcare professionals should be involved in the implementation of the generic medication policy.

9.
Artículo en Chino | WPRIM (Pacífico Occidental) | ID: wpr-1023178

RESUMEN

Objective To evaluate the effectiveness,safety and economy of the clinical application of levetiracetam(LEV)concentrated solution for injection generic drug and the original drug in the national centralized volume-based procurement.Methods The information of inpatients using original LEV concentrated solution for injection in the Xuanwu Hospital of Capital Medical University(original drug group)and inpatients using generic LEV concentrated solution for injection in the First Affiliated Hospital of Wannan Medical College(generic drug group)was retrospectively analyzed after the implementation of the procurement policy(from November 2021 to March 2022).To compare the effectiveness,safety and economy of the two in the prevention and treatment of epilepsy.Results In the original drug group and the generic drug group,18 and 17 patients were enrolled in the treatment of epilepsy respectively,the effective rates were 50.00%and 58.82%,the incidence of adverse reactions were both 0%,and the median daily cost was 255.00(255.00,510.00)yuan and 131.78(131.78,131.78)yuan.After propensity score matching,both the original drug group and the generic drug group had 76 patients each received preventive medication,the effective rates were 97.37%and 100%(P>0.05),and the incidence of adverse reactions were both 0%.The median daily fee for the original the generic drug group was 170.00(170.00,170.00)yuan and 131.78(131.78,131.78)yuan,there were significant difference(P<0.01).Conclusion The clinical effect of generic and original LEV concentrated solution for injection in preventing epilepsy is basically the same,the clinical safety are equivalent,the generic has better economy than the original.The effective rate of the treatment of epilepsy is similar,while the sample size needs to be further expanded to verify the results.

10.
Artículo en Chino | WPRIM (Pacífico Occidental) | ID: wpr-1024627

RESUMEN

AIM:To evaluate the clinical effective-ness and safety of generic and branded dienogest in the treatment of endometriosis.so as to provide the basis for clinical use of dienogest.MEHTODS:The data of patients admitted to Third Affiliated Hospital of Zhengzhou University from August 2022 to August 2023 who received dienogest(2 mg/d,orally,for 6 months)for treatment of endometrio-sis were collected.The clinical efficacy and adverse reactions of generic drugs and original drugs in the treatment of endometriosis-related pain were com-pared through follow-up surveys of the two groups of patients at 3 months and 6 months respectively.RESULTS:There was highly significant reduction in pelvic pain in both groups with mean of similar in generic group(34.0±3.0)mm and branded group(34.5±3.9)mm.The most frequent drug-related ad-verse effects in generic dienogest was vaginal bleeding(93%)which was no statistical difference with branded dienogest(90%).CONCLUSION:The generic and branded dienogest have the same clini-cal effectiveness and similar safety.

11.
Eur J Clin Pharmacol ; 80(3): 355-366, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38133831

RESUMEN

PURPOSE: Due to constantly rising therapy costs, biosimilars and generic drugs have gained tremendous importance through recent decades. Nevertheless, the acceptance among healthcare workers regarding biosimilars and generic drugs in previously published international studies is considerably lower than the scientific data on equivalent safety and efficacy would suggest. The aim of this questionnaire-based survey was to determine the perception and knowledge regarding generic drugs and biosimilars by medical professionals from different healthcare facilities in Vienna, Austria. METHODS: The online questionnaire was sent to public and religious hospitals in Vienna, including the university hospital "Vienna General Hospital." In addition, doctors' offices were reached by sending out the questionnaire in the weekly news of the Vienna Medical Association. RESULTS: A total of 282 physicians and 311 graduated nurses took part in the study. 63% and 62% of the participants were convinced that generic respective biosimilar drugs were clinically equivalent to the original reference drug. On average, 1.6 out of 4 knowledge questions were answered correctly about generics, while only 0.87 out of 4 questions were answered accurately about biosimilars. CONCLUSION: The results of this study support the outcome from previous surveys demonstrating that a large proportion of healthcare professionals is still skeptical about generics and biosimilars. According to the results of this study, better education of the medical staff might ensure greater acceptance of these types of drugs.


Asunto(s)
Biosimilares Farmacéuticos , Humanos , Biosimilares Farmacéuticos/uso terapéutico , Medicamentos Genéricos/uso terapéutico , Personal de Salud , Actitud del Personal de Salud , Percepción
12.
Rev. peru. med. exp. salud publica ; 41(1): 69-75, 2024. tab, graf
Artículo en Español | LILACS | ID: biblio-1560412

RESUMEN

RESUMEN La lamivudina es uno de los medicamentos más prescritos en el mundo, se utiliza para tratar la inmunodeficiencia humana y la hepatitis B. El objetivo del estudio fue evaluar los atributos de calidad y comparar los perfiles de disolución de dos lotes (A y B) del medicamento genérico lamivudina 150 mg tabletas con el medicamento innovador Epivir 150 mg tabletas. Se realizó un estudio analítico, experimental y de corte transversal, se usó un método espectrofotométrico a una longitud de onda de máxima absorción (λ) correspondiente a 270 nm, para medir el porcentaje de fármaco disuelto. El estudio evaluó identificación, contenido, disolución y uniformidad de masas. Se usó el aparato 2 USP (Paleta) 75 rpm, 900 mL de medio de disolución (37 ± 0,5 °C) a en tres medios de disolución: pH 1,2; 4,5 y 6,8. Se retiraron muestras de 5 mL a los 5, 10, 15, 20 y 30 min. Se encontró que ambos lotes de lamivudina genérico (A y B) presentan el mismo perfil cinético de disolución que el medicamento innovador. Ambas formulaciones cumplen con el criterio de medicamentos de disolución muy rápida (85% disuelto en 15 min), y de disolución rápida (85% disuelto en 30 min). Por lo tanto, no fue necesario calcular el factor de similitud. Se concluye que los medicamentos genéricos A y B son equivalentes in vitro con el medicamento innovador Epivir.


ABSTRACT Lamivudine is one of the most prescribed drugs in the world, and is used to treat human immunodeficiency and hepatitis B. This study aimed to evaluate the quality attributes and compare the dissolution profiles of two batches (A and B) of generic lamivudine 150 mg tablets with the innovator drug Epivir 150 mg tablets. We conducted an analytical, experimental, cross-sectional study, and used a spectrophotometric method at a wavelength of maximum absorption (λ) corresponding to 270 nm, to measure the percentage of dissolved drug. The study evaluated identification, content, dissolution and mass uniformity. Apparatus 2 USP (Paddle) 75 rpm, 900 mL of dissolution medium (37 ± 0.5 °C) was used in three dissolution media: pH 1.2; 4.5 and 6.8. Samples of 5 mL were obtained at 5, 10, 15, 20 and 30 min. Both batches of generic lamivudine (A and B) were found to have the same dissolution kinetic profile as the innovator drug. Both formulations met the criteria of very fast dissolving (85% dissolved in 15 min), and fast dissolving (85% dissolved in 30 min) drugs. Therefore, it was not necessary to calculate the similarity factor. We concluded that generic drugs A and B are in vitro equivalents to the innovator drug Epivir.


Asunto(s)
Equivalencia Terapéutica , Medicamentos Bioequivalentes , Biofarmacia , VIH , Medicamentos Genéricos
13.
J Family Med Prim Care ; 12(10): 2223-2229, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-38074269

RESUMEN

Introduction: The drugs approved by the Food and Drug Administration (FDA) in 2022, for the first time for any indication or under any brand, were studied under the contexts of indications, mechanism of action, and side effects. Primary care practitioners with considering patients as a composite whole will benefit by acquainting themselves with these drugs and their indications and adverse effects. Observations: The drugs were approved in all, 11 for the management of neoplasia, and 5 each for hematological, neurological, and dermatological conditions. 11 of the approved drugs are monoclonal antibodies and six are small molecule inhibitors. Conclusion: Although the FDA's expedited approval program allows rapid market availability of drugs for difficult to treat conditions, a quarter of the globe does not have access to essential medicines, primarily due to cost. In light of this, approval agencies must reorient approval processes to improve accessibility.

14.
Front Public Health ; 11: 1265756, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38106910

RESUMEN

Introduction: In March 2016, the Chinese government officially launched a nationwide consistency evaluation of the quality and efficacy of generic drugs. Methods: This paper conducted an empirical study using the Difference-in-Differences method to explore the effect of this policy on the innovation quality of China's pharmaceutical manufacturing industry and further analyzed the underlying mechanism of action. Results: The results of the study show that the generic consistency evaluation policy has a significant promotion effect on the innovation quality of China's pharmaceutical manufacturing industry, and the promotion effect is the largest for non-state-owned enterprises and enterprises in the central region; in addition, the intensity of R&D capital investment and R&D personnel investment which play a mediating role. Discussion: Therefore, we should fully recognize the positive effect of generic drug consistency evaluation policy on improving the innovation quality of the pharmaceutical manufacturing industry and pay attention to the necessity of regional coordination and unification in policy implementation and the formulation of supporting policy tools. This study provides empirical evidence for the implementation effect of the generic drug consistency evaluation policy, which can provide an essential reference for the further improvement of the procedure and the R&D decision-making of pharmaceutical enterprises.


Asunto(s)
Medicamentos Genéricos , Invenciones , Industria Manufacturera , Industria Farmacéutica , Política Pública , China
15.
Eur J Pharm Sci ; 191: 106601, 2023 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-37783379

RESUMEN

The aim of this work is to develop a novel simultaneous in vitro dissolution - in situ perfusion system (SDPS) as a potential tool to evaluate the in vivo performance of solid oral formulation in rat. The innovative nitrendipine (NTD) tablet of Bayotensin mite® made in Germany was used as reference listed drug (RLD), and five generic products from Chinese market were compared with RLD using the in vitro dissolution test method specified by the orange book and the SDPS method developed in this study. Four self-prepared NTD tablets with different proportions of microcrystalline cellulose/starch were employed to investigate the discriminatory ability of the SDPS for formulation. In addition, the predictivity of the SDPS in relation to data from in vivo pharmaceutics studies was evaluated. The 45-min dissolution test and multiple-pH dissolution profiles of generic product 1 and 2 have no difference compared with the RLD, but their dissolution profiles from the SDPS showed statistically significant differences. A biexponential formula successfully described the concentration profiles of self-prepared formulations in SDPS experiments. The kdis (0.08 ± 0.01 ∼ 0.2 ± 0.03 min-1) and ka (about 2.30 × 10-3 min-1) values calculated by the formulas of F1-F3 suggested that the used excipients had no effect on the intestinal absorption of NTD, and it might be the property of active pharmaceutical ingredient that led to the difference among the generics. Furthermore, the in vivo rat pharmacokinetics study results of F1-F3 showed a good correlation (R2 = 0.99) with the SDPS data. In summary, the SDPS is a promising tool to detect the unexpected quality changes of pharmaceutical products in weakly regulated markets, facilitate formulation screening, and potentially reduce animal testing for estimating the in vivo absorption behavior of solid oral formulations. The absorption performance of generic drugs in vivo should be further investigated.


Asunto(s)
Biofarmacia , Excipientes , Animales , Ratas , Solubilidad , Comprimidos/química , Excipientes/química , Perfusión , Administración Oral
16.
Pharmaceutics ; 15(9)2023 Aug 24.
Artículo en Inglés | MEDLINE | ID: mdl-37765161

RESUMEN

The use of the USP IV apparatus (flow-through cell) has gained acceptance in recent years due to its versatility and ability to discriminate due to its hydrodynamic conditions. Therefore, the objective of the present study was to develop a discriminative dissolution method in the USP IV apparatus using the open-loop configuration, as well as to propose a method to compare non-cumulative dissolution profiles obtained in the open-loop configuration considering kinetic parameters and validate its predictive power through its comparison with independent and dependent methods using five commercial immediate-release tablet drugs (one reference drug and four generic drugs) of metoprolol tartrate as a model drug. The comparison of the non-accumulated dissolution profiles consisted of determining the geometric ratio of Cmax, AUC0∞, AUC0Cmax, and Tmax (kinetic parameters) of the generic/reference drugs, whereby generic drugs "C" and "D" presented the highest probability of similarity since their 90% confidence intervals were included, or they were very close to the acceptance interval (80.00-125.00%). These results were consistent with the f2, bootstrap f2, and dissolution efficiency approaches (independent models). In conclusion, the proposed comparison method can be an important tool to establish similarity in dissolution profiles and to facilitate the development/selection of new formulations and positively ensure bioequivalence in clinical studies.

17.
J Cancer Policy ; 38: 100446, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37777010

RESUMEN

Lenalidomide (Revlimid®) was originally approved by the Food and Drug Administration (FDA) in 2005, however, a generic version was not available until 2022. In that time, the price of lenalidomide has increased more than 20 times, and in 2021 alone, it accounted for >$5.8 billion dollars in Medicare Part D spending. This was a direct consequence of legal tactics employed by the manufacturer to thwart development of generic formulations of lenalidomide. In this report, we review the clinical development of lenalidomide, provide background on generic drug manufacturing in the United States (US), describe the steps that the manufacturer took to prevent entry of generic lenalidomide into the US market, and advocate for legislative reform of the FDA approval process and patent law protections in the US.


Asunto(s)
Medicamentos Genéricos , Medicare Part D , Estados Unidos , Lenalidomida , Industria Farmacéutica , Comercio
19.
Eur J Pharm Biopharm ; 191: 12-25, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37567396

RESUMEN

OBJECTIVE: Bioequivalence (BE) studies support the approval and clinical use of both new and generic drug products. Narrow therapeutic index (NTI) drugs have relatively high costs and low success rates of BE evaluation clinical trials as high-risk drugs. A physiologically-based pharmacokinetic (PBPK) model can be used to evaluate the BE of two preparations. METHODS: This study inputs the basic physical and chemical property parameters of warfarin sodium available at the present stage into GastroPlus™ software, and combined it with the Advanced Compartmental Absorption and Transit (ACAT™) model built into the software. The PBPK model of Chinese individuals taking 2.5 mg of warfarin sodium orally while fasted condition was developed using the disposal parameters calculated from the clinically measured PK data of the reference preparations. The model was tested using the PK data of other reference preparations and tested preparations from different domestic manufacturers. RESULTS: The results revealed that at least 30% of drugs are released in 30 min under a pH of 4.5 condition, and at least 80% are released in 30 min under a pH of 6.8 condition, which can be used as bioequivalent dissolution limits under fasted conditions. The risk of BE failure in the fed condition will be significantly reduced for the clinical study on the BE of warfarin sodium, which is a NTI drug if the fasted condition is bioequivalent. CONCLUSION: The results revealed that the PBPK models were successfully developed for 2.5 mg of warfarin sodium tablets in Chinese individuals. Developing a PBPK model for NTI drugs based on in vitro dissolution data in software is a promising method for BE evaluation, which can provide great help for developing new drugs and the clinical trial research of BE of generic drugs.


Asunto(s)
Programas Informáticos , Warfarina , Humanos , Equivalencia Terapéutica , Solubilidad , Ayuno , Modelos Biológicos , Comprimidos
20.
Lancet Reg Health Southeast Asia ; 15: 100225, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37614349

RESUMEN

Ceftazidime/avibactam is a last-line antibiotic, to be used as a targeted therapy for certain carbapenem-resistant Gram-negative infections and not to be used as an empirical therapy or as a carbapenem-sparing therapy. After a span of 5 years, the antibiotic recently lost its exclusivity and become a generic drug in India. It is assumed that generic players will aggressively market the drug, making it freely available even in pharmacies catering to primary- and secondary-care hospitals. We thus foresee certain potential adverse implications of introducing generic versions of ceftazidime/avibactam into the Indian market; as they will be a challenge to the antibiotic stewardship. In the real world scenario, the stewardship system in India is fragile, therefore, we may see empirical use of ceftazidime/avibactam even in primary and secondary-care hospitals. The existing widespread prevalence of MBL-producing isolates in India, will be further enhanced by the indiscriminate use of ceftazidime/avibactam.

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