Dual-Layer Ibuprofen Tablet Balancing Rapid Onset and 24-Hour Efficacy
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Solution Overview
Problem
Current ibuprofen formulations either provide rapid relief but require frequent dosing due to short half-life, or sustained release but lack immediate effectiveness, necessitating a preparation that combines rapid onset with long-lasting efficacy while being stable and suitable for commercial production.
Innovation Solution
A controlled-release tablet comprising an immediate-release layer and a sustained-release layer with specific mass ratios, utilizing xanthan gum and hydroxypropylmethylcellulose to control drug release, and a method involving wet granulation and pressing processes to ensure stability and compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If immediate-release ibuprofen is used, then rapid pain relief is achieved, but the drug efficacy cannot be sustained requiring frequent administration
Solution Approach 1:
The tablet is divided into two distinct layers: an immediate-release layer containing ibuprofen and a sustained-release layer containing ibuprofen. This segmentation allows each layer to perform its specific function - the immediate-release layer provides rapid onset while the sustained-release layer maintains efficacy over time, resolving the contradiction between speed and duration of action.
2Duration of action of moving object
If sustained-release ibuprofen is used, then the drug can take effect continuously for a certain period of time, but the drug cannot take effect quickly after administration
Solution Approach 1:
The tablet is divided into two distinct layers: an immediate-release layer containing ibuprofen and a sustained-release layer containing ibuprofen. This segmentation allows each layer to perform its specific function - the immediate-release layer provides rapid onset while the sustained-release layer maintains efficacy over time, resolving the contradiction between speed and duration of action.
3Duration of action of moving object
If a dual-layer controlled-release tablet is designed, then both rapid onset and sustained efficacy are achieved, but the device complexity increases
Solution Approach 1:
The patent combines immediate-release and sustained-release mechanisms into a single dual-layer tablet structure. By merging these two release profiles in one dosage form, the invention achieves both rapid onset and sustained efficacy without requiring multiple separate administrations, thereby managing the complexity within a unified system.
Solution Approach 2:
The tablet is divided into two distinct layers: an immediate-release layer containing ibuprofen and a sustained-release layer containing ibuprofen. This segmentation allows each layer to perform its specific function - the immediate-release layer provides rapid onset while the sustained-release layer maintains efficacy over time, resolving the contradiction between speed and duration of action.
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 tablet achieves rapid pain relief followed by sustained effectiveness for up to 24 hours, maintaining a stable drug release model and facilitating easy production without impurities, with a dissolution rate of 20-40% in 1 hour and >90% in 18 hours.
Implementation Method 1
utilizing xanthan gum and hydroxypropylmethylcellulose to control drug release
Implementation Method 2
a method involving wet granulation and pressing processes
Data Source
AI summary
An ibuprofen controlled-release tablet and a method for preparing same are provided. The controlled-release tablet is composed of a drug-containing immediate-release layer and a drug-containing sustained-release layer, wherein a mass of ibuprofen in the drug-containing sustained-release layer is greater than a mass of ibuprofen in the drug-containing immediate-release layer, and a ratio of the mass of the ibuprofen in the drug-containing sustained-release layer to the mass of the ibuprofen in the drug-containing immediate-release layer is ≤7. The tablet of the present disclosure has an effective analgesic effect for 24 h after administration.