Tablet Dissolution Control via Low Viscosity Binder
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Solution Overview
Problem
Tablets containing hardly soluble active ingredients often exhibit variations in dissolution behavior, leading to inconsistent medication efficacy due to the viscosity of binders used, which affects the absorption and quality of the active ingredient.
Innovation Solution
Formulating tablets with a specific composition including 3-50% hardly soluble active ingredients, magnesium stearate, and hydroxypropylcellulose with a viscosity of 1-4 mPa·s, which regulates the dissolution variation by maintaining a similarity factor of 50-100 between different lots, ensuring consistent dissolution rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a binder with high viscosity is used in tablet formulation, then the tablet structure is improved, but the dissolution behavior of the active ingredient becomes variable and inconsistent
Solution Approach 1:
The invention changes the viscosity parameter of the binder from high viscosity to low viscosity (1-4 mPa·s), which fundamentally alters the interaction between the binder and active ingredient, enabling consistent dissolution behavior while maintaining tablet structural integrity
Solution Approach 2:
The invention uses a composite binder system combining hydroxypropylcellulose with specific viscosity characteristics and magnesium stearate, creating a synergistic effect that simultaneously ensures tablet structure stability and dissolution consistency
2Ease of manufacture
If conventional binder viscosity is used, then manufacturing is straightforward, but dissolution variation leads to inconsistent medication efficacy
Solution Approach 1:
By specifying the viscosity parameter of hydroxypropylcellulose within 1-4 mPa·s, the invention achieves precise control over dissolution rates while maintaining ease of manufacture through standard tablet formulation processes
3Quantity of substance
If the active ingredient content is increased to improve efficacy, then the therapeutic effect is enhanced, but dissolution variation increases and quality control becomes difficult
Solution Approach 1:
The invention changes the binder viscosity parameter to low viscosity (1-4 mPa·s), which allows the tablet to maintain dissolution consistency even at higher active ingredient contents (3-50% w/w), thereby enhancing therapeutic effect without sacrificing quality control
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 solution provides a tablet with regulated dissolution variation of the active ingredient, enhancing the consistency and efficacy of the medication by maintaining a similarity factor of 50-100, thereby ensuring reliable absorption and quality across different preparations.
Implementation Method 1
hydroxypropylcellulose having a viscosity of about 1 to about 4 mPa·s
Data Source
AI summary
A tablet showing regulated variation in dissolution from lot to lot which contains from about 3 to about 50% by weight (w/w), based on the whole tablet, of (S)—N-[2-(1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethyl]propionamide, magnesium stearate and hydroxypropylcellulose having a viscosity of about 1 to about 4 mPa·s.