Urea-Based Topical Composition Stabilization for Fungal Nail Treatment
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Solution Overview
Problem
Current pharmaceutical formulations for treating fungal nail infections, such as onychomycosis, face challenges in achieving sufficient distribution of antifungal compounds throughout the nail and nail bed, leading to long treatment times and poor compliance due to instability of urea at higher storage temperatures.
Innovation Solution
A topical pharmaceutical composition comprising a urea-based component, a diol component, an organic acid component, and a triol component, specifically glycerol, which improves chemical stability and penetration, allowing for effective treatment of fungal nail infections while maintaining safety and biodegradability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If urea-based formulations are used for treating fungal nail infections, then penetration and treatment efficacy are improved, but chemical stability at higher storage temperatures deteriorates
Solution Approach 1:
The patent introduces a stabilizing agent as an intermediary substance that mediates between the urea-based active ingredient and the storage environment. This stabilizing agent prevents chemical degradation of urea at elevated temperatures while maintaining its penetration-enhancing properties, thus resolving the contradiction between treatment efficacy and storage stability.
Solution Approach 2:
The patent modifies the chemical parameters of the formulation by adjusting pH, adding stabilizers, and optimizing concentration ratios of ingredients. These parameter changes enable the formulation to maintain chemical stability across a wider temperature range while preserving its therapeutic effectiveness against fungal infections.
2Reliability
If long treatment times are used to achieve sufficient distribution of antifungal compounds throughout the nail, then treatment efficacy is improved, but patient compliance deteriorates
Solution Approach 1:
The patent incorporates penetration enhancers and formulation components that pre-condition the nail structure before the active antifungal agent is applied. This preliminary action facilitates faster and more efficient drug distribution throughout the nail, reducing the overall treatment duration while maintaining efficacy, thereby improving patient compliance.
Solution Approach 2:
The patent uses composite formulation systems that combine multiple functional components including penetration enhancers, stabilizers, and antifungal agents in optimized ratios. This composite approach accelerates drug delivery and reduces treatment time while maintaining reliable therapeutic outcomes, addressing the compliance- efficacy contradiction.
3Productivity
If higher concentrations of antifungal compounds are administered to improve treatment efficacy, then penetration is enhanced, but chemical degradation increases
Solution Approach 1:
The patent introduces stabilizing agents as intermediaries that protect the antifungal compounds from chemical degradation even at higher concentrations. These stabilizers act as protective mediators that allow the formulation to maintain high active ingredient levels for improved penetration without suffering from accelerated degradation.
Solution Approach 2:
The patent optimizes formulation parameters including pH control, buffer systems, and stabilizer concentrations to create a chemical environment that prevents degradation. This allows higher concentrations of antifungal compounds to be maintained stable over time, achieving both improved penetration efficiency and reduced chemical loss.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition enhances chemical stability at higher temperatures, improves treatment compliance by accelerating nail appearance improvement, and demonstrates high penetration and efficacy in treating fungal nail infections, reducing degradation and improving storage stability.
Implementation Method 1
the chemical stability of the solution could be improved at higher storage temperatures. In particular, the urea in such formulations chemically degrades. This instability is unexpectedly solved by the addition of a triol, such as glycerol, to the liquid formulation.
Implementation Method 2
the problem of obtaining distribution of sufficient concentrations of such antifungal drug compounds throughout the nail and into the nail bed has proven to be a difficult one to solve
Data Source
AI summary
There is provided pharmaceutical compositions suitable for topical application to the nail for the treatment of nail diseases such as onychomycosis, comprising a urea-based component, a diol component, such as propylene glycol, an organic acid component, such as lactic acid, and a triol component, such a glycerol. There is further provided methods of improving the storage stability of a pharmaceutical composition suitable for topical application to the skin and/or nails comprising such urea-based components, diol components, organic acid components, and, optionally, an aqueous base, which method comprises adding a triol component, such a glycerol, to that composition prior to said storage.