In Vitro Evaluation and In Vivo Pharmacokinetic Assessment of Intranasal Tadalafil Nanocrystals
Antonio Conti, Laura Ricci, Marco Esposito
Abstract
Tadalafil (TDA), a Biopharmaceutics Classification System (BCS) class II drug, exhibits poor aqueous solubility but high permeability. This study focused on enhancing the bioavailability of poorly soluble TDA through the development of intranasal nanocrystals (NCs). TDA NCs stabilized with polyvinyl alcohol (PVA) demonstrated the smallest particle size and optimal solubility. Formulation F11 measured 196 nm in size, with a polydispersity index (PDI) of 0.21 and a zeta potential of -11.20, showin
Topics & Concepts
BioavailabilityNasal administrationChemistryIn vivoZeta potentialPharmacologyPharmacokineticsDispersityPolyvinyl alcoholSolubilityParticle sizeBiopharmaceuticsTadalafilDrugAqueous solutionChromatographyIn vitroBiopharmaceutics Classification SystemExcipientDosage formDrug deliveryNanoparticleAlcoholCentrifugationNanocrystalAdvanced Drug Delivery SystemsNanoparticle-Based Drug DeliveryPharmaceutical Quality and Counterfeiting