Sodium Ibuprofen Tablet Hardness and Dissolution via Binder Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Commercially available sodium ibuprofen tablets have high sodium content, poor stability, and friability issues, leading to uncertainty in dosage and increased waste during handling, while also having slow dissolution profiles.
Innovation Solution
The development of sodium ibuprofen cores with low sodium content, using microcrystalline cellulose and mannitol as binders, and a dihydrate form, which are compressed into tablets with a coating to achieve high hardness, low friability, and rapid dissolution, along with a manufacturing process that includes roller compaction to ensure stability and bioavailability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If tablets are compressed under low compression force, then dissolution rate is improved, but tablet hardness and strength deteriorate
Solution Approach 1:
The patent changes the physical-chemical parameters of the active ingredient by using sodium ibuprofen dihydrate instead of anhydrous form, and optimizes binder composition ratios to achieve both low compression force (improved dissolution) and adequate tablet hardness. The dihydrate form allows compression at lower forces while maintaining structural integrity.
Solution Approach 2:
The patent uses a composite binder system containing both microcrystalline cellulose and mannitol in specific ratios, creating a synergistic effect where the combination provides both adequate binding strength for tablet formation and porosity for rapid dissolution, resolving the contradiction between hardness and dissolution rate.
2Strength
If tablets are compressed under high compression force, then tablet hardness is improved, but dissolution rate deteriorates and friability increases
Solution Approach 1:
By changing the compression force parameter to low levels and using sodium ibuprofen dihydrate with optimized binder composition, the patent achieves tablet hardness sufficient for handling while maintaining a porous structure that enables rapid dissolution, avoiding the compaction that would slow dissolution.
3Ease of manufacture
If sodium ibuprofen tablets are formulated with conventional binders, then manufacturing is simplified, but sodium content becomes excessive
Solution Approach 1:
The patent changes the chemical form of the active ingredient to sodium ibuprofen dihydrate and optimizes the binder system to require lower quantities, thereby reducing total sodium content below 140 mg/day while maintaining manufacturability through standard compression processes.
4Ease of manufacture
If tablets have high friability, then manufacturing cost is reduced, but dosage accuracy deteriorates and waste increases
Solution Approach 1:
The patent optimizes compression parameters and binder composition to achieve the minimum acceptable friability level that prevents crumbling and breakage during handling, thereby ensuring dosage accuracy and reducing waste while maintaining cost-effective manufacturing.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Sodium ibuprofen compositions and methods of manufacturing tablets and caplets comprising sodium ibuprofen are described. The formulation is advantageous because it allows for the formation of tablets having low sodium content and further provides tablets exhibiting improved physical stability, high tablet hardness and high strength, coupled with excellent dissolution and bioavailability characteristics. The formulations and processes are further advantageous because they can be produced in large quantities without an unacceptable number of defective tablets.