ArticlePharmaceutics2014
Evaluation of Rapidly Disintegrating Vaginal Tablets of Tenofovir, Emtricitabine and Their Combination for HIV-1 Prevention.
Article in Pharmaceutics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
21 citing papers in PubMed.
- Design of Experiments in the Formulation and Characterization of 3D-Printed Vaginal Films Loaded with Curcumin Solid Lipid Nanoparticles for Cervical Dysplasia.Pharmaceuticals (Basel, Switzerland) · 2026Article
- Electrospun Tenofovir/Emtricitabine-Zein Nanofibers for Pre-Exposure Prophylaxis Platform against HIV through Vaginal Delivery.ACS omega · 2025Article
- Vaginally-delivered fast-dissolving antibody tablets (FDAT) for on-demand non-hormonal contraception and multi-purpose protection.Journal of controlled release : official journal of the Controlled Release Society · 2025Article
- Preclinical and Early Clinical Development of Tenofovir Alafenamide/Elvitegravir Topical Inserts for Effective On-Demand Vaginal and Rectal HIV Prevention.Pharmaceutics · 2024Article
- Baseline and time-updated factors in preclinical development of anionic dendrimers as successful anti-HIV-1 vaginal microbicides.Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · 2022Review
- Recent Advances in the Excipients Used in Modified Release Vaginal Formulations.Materials (Basel, Switzerland) · 2022Review
- Recent Advances in Polymer-Based Vaginal Drug Delivery Systems.Pharmaceutics · 2021Review
- Solubility Data, Solubility Parameters and Thermodynamic Behavior of an Antiviral Drug Emtricitabine in Different Pure Solvents: Molecular Understanding of Solubility and Dissolution.Molecules (Basel, Switzerland) · 2021Article
- Efficacy of silk fibroin biomaterial vehicle for in vivo mucosal delivery of Griffithsin and protection against HIV and SHIV infection ex vivo.Journal of the International AIDS Society · 2020Article
- Solubility, Hansen Solubility Parameters and Thermodynamic Behavior of Emtricitabine in Various (Polyethylene Glycol-400 + Water) Mixtures: Computational Modeling and Thermodynamics.Molecules (Basel, Switzerland) · 2020Article
- Topical Inserts: A Versatile Delivery Form for HIV Prevention.Pharmaceutics · 2019Review
- Smart Freeze-Dried Bigels for the Prevention of the Sexual Transmission of HIV by Accelerating the Vaginal Release of Tenofovir during Intercourse.Pharmaceutics · 2019Article
- Deducing Mucosal Pharmacokinetics and Pharmacodynamics of the Anti-HIV Molecule Tenofovir from Measurements in Blood.Scientific reports · 2019Article
- Pharmaceutical Approaches to HIV Treatment and Prevention.Advanced therapeutics · 2018Article
- On-demand microbicide products: design matters.Drug delivery and translational research · 2017Review
- Multipurpose tenofovir disoproxil fumarate electrospun fibers for the prevention of HIV-1 and HSV-2 infections in vitro.International journal of pharmaceutics · 2017Article
- Multicompartmental Pharmacokinetic Model of Tenofovir Delivery to the Rectal Mucosa by an Enema.PloS one · 2017Article
- Nanoparticle Encapsulation for Antiretroviral Pre-Exposure Prophylaxis.Journal of nanotechnology and materials science · 2017Article
- Historical development of vaginal microbicides to prevent sexual transmission of HIV in women: from past failures to future hopes.Drug design, development and therapy · 2017Review
- Efficacy of topical tenofovir against transmission of a tenofovir-resistant SHIV in macaques.Retrovirology · 2015Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Vaginal tablets are being developed as an alternative to gels as an inexpensive, discreet dosage form for the administration of microbicides. This work describes the pharmacokinetic (PK) evaluation of rapidly disintegrating vaginal tablets containing tenofovir (TFV, 10 mg), emtricitabine (FTC, 10 mg), and the combination of TFV and FTC (10 mg each) under in vitro and in vivo conditions, and in direct comparison to the clinical TFV 1% gel, a microbicide product in Phase III clinical testing. The PK of TFV and FTC from tablets were also evaluated in female rabbits following intravaginal administration. Direct comparison of a single dose of TFV tablets (intact or predissolved at 10 mg/mL) and TFV 1% gel showed no differences in the vaginal PK of TFV between groups; however systemic bioavailability of TFV was significantly higher from the gel. When rabbits were dosed either once or daily for seven days with intact tablets of TFV, FTC, or the combination of TFV/FTC, vaginal and systemic concentrations of TFV and FTC were unaffected by co-formulation. Moreover, plasma PK parameters were similar following a single dose or seven once-daily doses. Tissue concentrations of TFV and FTC in the cranial vagina 4 h after administration ranged between 104 and 105 ng/g. Concentrations of TFV-diphospate (TFV-DP, the active metabolite) were also high (over 103 ng/g or about 3000 to 6000 fmol/mg) in the cranial vagina 4 h after administration and similar to those measured following administration of TFV 1% gel. These data demonstrate that rapidly disintegrating vaginal tablets may be a suitable topical microbicide dosage form providing similar vaginal TFV PK to that of TFV 1% gel. The data also support co-administration of FTC with TFV in a single vaginal tablet to create a combination microbicide in a simple and inexpensive dosage form.
Identifiers
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.