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Research

Nanoemulsion

A nanoemulsion is an oil-in-water dispersion system composed of nanoscale droplets (approximately 20–200 nm). It is stabilized using specialized emulsification processes and surfactants, effectively enhancing the solubility, bioavailability, and delivery efficiency of hydrophobic drugs.

Core Advantages

  • Enhanced Absorption: High surface area accelerates dissolution and permeation, reducing dose variability and food effects.

  • Multi-Route Applications: Suitable for oral, ophthalmic, topical, and injectable formulations; supports 505(b)(2) submissions and differentiated generic drug development.

  • Formulation Flexibility: Can be designed as transparent or translucent emulsions; adjustable oil phase composition, viscosity, and release profiles; compatible with controlled release and mucoadhesive enhancements.

Technical Features

  • High-Energy Preparation: Ensures droplet size stability and batch-to-batch consistency.

  • Strict Control: Droplet size distribution and physical stability are tightly regulated, with processes aligned to international pharmacopeial and regulatory standards.

Key Technical Points

  • Droplet Size & Distribution: Target size range of 20–200 nm; monitored using DLS/PSD for PdI and batch consistency.

  • Stability Mechanisms: Formulated to inhibit Ostwald ripening, aggregation, and coalescence.

  • Compatibility & Safety: Uses pharmaceutically acceptable lipids and surfactants; compatibility and extractables/leachables evaluations completed.

  • Regulatory Alignment: Aligned with FDA guidance on Nanomaterials in Drug Products and relevant pharmacopeias; injectable products adhere to stricter standards such as USP <729> (MDD, PFAT5).

Applicable Scenarios

  • Oral Delivery of Poorly Soluble Small Molecules: Enhances Cmax, reduces Tlag; supports 505(b)(2) formulation upgrades or differentiated generics.

  • Ophthalmic Delivery: Improves corneal retention and permeability, increasing local bioavailability.

  • Topical/Mucosal & Injectable Use: Enhances local and systemic exposure; injectables comply with sterility, particulate, and endotoxin requirements.

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