Oil-Based Sapropterin Suspension for Oxidation Stability
Solution Overview
Problem
Current sapropterin formulations, such as tablets and powders, are unstable in the presence of oxygen, leading to degradation and require complex administration methods, especially for children, necessitating a stable liquid formulation that avoids degradation and simplifies administration.
Innovation Solution
A solid suspension of sapropterin dispersed within an oil-based formulation, stabilized by viscosity and thickening agents, maintaining homogeneity and preventing oxidative degradation for up to 24 months.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sapropterin is formulated as a tablet or powder, then it can be stored and administered, but it degrades in the presence of oxygen leading to instability
Solution Approach 1:
The patent applies the inert atmosphere principle by formulating sapropterin in an oil-based vehicle that creates an oxygen-excluding environment. The oil acts as a physical barrier preventing oxygen contact with the sapropterin particles, thereby preventing oxidative degradation while maintaining stability during storage and administration.
2Ease of operation
If sapropterin tablets are crushed and mixed with food or water for pediatric administration, then dosing flexibility is improved, but additional rinsing steps are required to prevent oral irritation
Solution Approach 1:
The patent extracts the irritating excipients (crospovidone, sodium stearyl fumarate, calcium phosphate) from the traditional tablet formulation, retaining only the active sapropterin component dispersed in oil. This elimination of harmful components allows direct administration without requiring additional rinsing steps, while maintaining dosing flexibility.
3Ease of operation
If sapropterin is suspended in water or juice, then it can be administered orally, but white insoluble particles remain in suspension affecting appearance and stability
Solution Approach 1:
The patent changes the physical state and dispersion medium parameters by dispersing sapropterin in an oil-based vehicle instead of aqueous solutions. This parameter change eliminates insolubility issues, prevents particle aggregation, and creates a stable, homogeneous suspension that remains clear and appealing for pediatric administration.
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 formulation provides a stable, shelf-stable liquid sapropterin that maintains efficacy for prolonged periods, allowing easy administration without additional rinsing or mixing steps, suitable for pediatric use.
Implementation Method 1
a solid suspension of sapropterin dispersed within an oil
Implementation Method 2
preventing oxidative degradation for up to 24 months
Data Source
AI summary
The present disclosure relates to a formulation of sapropterin. The formulation comprises a solid suspension of sapropterin dispersed within an oil. Methods of treatment using the formulation are also contemplated by the present disclosure.