Corticosteroid Eye Drop pH Stabilization Through Antioxidant Additives
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current ocular treatments face challenges in delivering effective drug doses due to passive diffusion limitations, and cyclodextrin-based eye drops experience pH instability during storage, necessitating a method to stabilize the pH and prevent oxidation.
Innovation Solution
The addition of an additive, such as antioxidants or oxygen scavengers, to the aqueous composition comprising a drug, particularly corticosteroids, stabilizes the pH by preventing oxidation, especially during long-term storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cyclodextrin-based eye drops are stored in LDPE vials for several months, then the convenience of storage is improved, but the pH stability deteriorates and pH decreases over time
Solution Approach 1:
An antioxidant additive is introduced as an intermediary substance to prevent oxidation reactions between the corticosteroid drug and oxygen in the aqueous solution. This mediator protects the pH stability by scavenging free radicals and preventing oxidative degradation, thereby resolving the contradiction between storage convenience and pH stability.
Solution Approach 2:
The antioxidant is added to the formulation in advance before storage, performing preliminary protection against oxidation. This preliminary action prevents pH degradation during the storage period, allowing the eye drops to maintain stability while stored in convenient LDPE vials.
2Ease of operation
If corticosteroids are formulated in aqueous eye drops, then the ease of administration is improved, but oxidation of the drug occurs during storage
Solution Approach 1:
The antioxidant acts as a protective intermediary that specifically targets and neutralizes oxidative threats to the corticosteroid. This allows the aqueous formulation to maintain its ease of administration while the antioxidant mediator prevents drug oxidation and ensures reliability during storage.
Solution Approach 2:
The antioxidant provides self-service protection to the corticosteroid by automatically scavenging oxidizing species in the aqueous environment. This self-protective mechanism ensures the drug maintains its stability without requiring external intervention, preserving both ease of administration and drug reliability.
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 method effectively maintains the pH of the aqueous composition for extended periods, ensuring the stability and efficacy of corticosteroids in ocular treatments.
Implementation Method 1
the addition of an additive to prevent oxidation of the corticosteroid
Data Source
AI summary
The present disclosure relates to a method for stabilizing the pH of an aqueous composition comprising a drug which is prone to oxidation, said method comprising the addition of an additive to prevent oxidation of the drug which is prone to oxidation. In particular, the present disclosure relates to a method for stabilizing the pH of an aqueous composition comprising a corticosteroid, said method comprising the addition of an additive to prevent oxidation of the corticosteroid. The present disclosure also relates to a composition comprising a corticosteroid and an additive to prevent oxidation of the corticosteroid.