Orally Disintegrating Tablet Composition for Hardness and Fast Breakdown
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Solution Overview
Problem
Conventional ultrafast-disintegrating tablets require specialized freeze-drying devices and have low tablet hardness, making them inefficient and prone to cracking.
Innovation Solution
A method involving a specific range of weight and surface area, using acid-type carboxymethylcellulose and crystalline cellulose, with a two-stage granulation process and tableting at 2 to 20 kN compression force, produces tablets with high hardness and rapid disintegration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If molding pressure is increased to increase tablet hardness, then tablet hardness is improved, but disintegration time is prolonged
Solution Approach 1:
The invention changes the physical and chemical parameters of the tablet formulation by incorporating specific disintegrating agents (superdisintegrants) and controlling particle size distribution. This allows the tablet to achieve sufficient hardness for handling while maintaining extremely rapid disintegration (within seconds) through the action of these agents that rapidly absorb water and create internal stress to break apart the tablet structure.
Solution Approach 2:
The invention uses composite material formulation combining multiple components including disintegrating agents, binders, and fillers in specific ratios. This composite structure enables the tablet to possess both mechanical strength for handling and rapid disintegration capability, as different components contribute different properties that work together to resolve the contradiction between hardness and disintegration speed.
2Loss of time
If molding pressure is reduced to shorten disintegration time, then disintegration time is shortened, but tablet hardness decreases
Solution Approach 1:
Instead of relying solely on molding pressure to control disintegration time, the invention changes the chemical composition parameters by adding specific disintegrating agents. This allows low molding pressure to be used while still achieving extremely short disintegration times through the chemical action of the disintegrants that rapidly swell and create internal forces to break the tablet apart.
Solution Approach 2:
The disintegrating agents act as intermediaries that mediate between the tablet structure and water. Upon contact with water, these agents rapidly absorb moisture and generate internal stress, serving as a mechanism that enables quick disintegration without requiring high molding pressure, thus resolving the contradiction between hardness and disintegration speed.
3Loss of time
If freeze-drying technique is used to achieve extremely high disintegrability, then disintegration time is reduced to a few seconds, but tablet hardness becomes extremely low and specialized equipment is required
Solution Approach 1:
The invention replaces the expensive and complex freeze-drying process with a simpler, more economical tableting process using conventional equipment. The formulation is designed to achieve rapid disintegration through chemical composition (disintegrating agents) rather than physical structure from freeze-drying, eliminating the need for specialized equipment while maintaining ultra-fast disintegration performance.
Solution Approach 2:
The invention substitutes the mechanical freeze-drying system with a chemical-based disintegration mechanism. Instead of relying on the porous structure created by freeze-drying, the formulation uses disintegrating agents that chemically interact with water to rapidly break down the tablet, replacing complex mechanical equipment with a simpler chemical process.
4Loss of time
If freeze-drying technique is used to achieve extremely high disintegrability, then disintegration time is reduced to a few seconds, but tablet hardness becomes extremely low causing cracking and powdering
Solution Approach 1:
The invention uses composite material formulation combining disintegrating agents, binders, and fillers in optimized ratios. This composite structure provides both mechanical integrity for handling and transport, and rapid disintegration capability through the disintegrating agents, eliminating the cracking and powdering issues associated with freeze-dried tablets while maintaining ultra-fast disintegration.
Solution Approach 2:
The invention changes the formulation parameters by incorporating specific binders and disintegrating agents in controlled amounts. This allows the tablet to achieve optimal balance between hardness (for reliability during handling) and disintegration speed, preventing the cracking and powdering problems that occur with freeze-dried tablets that have extremely low hardness.
Data Source
Figure 1
AI summary
An object of the present invention is to provide an orally disintegrating tablet (super-rapid disintegrating tablet) that is heavy and relatively thin, and has an extremely high disintegrability (short disintegration time), and a high tablet hardness, and to provide a simple method for the production of said super-rapid disintegrating tablet without such a complicated process as freeze-drying. This invention relates to an orally disintegrating tablet having a specific surface area of from 1.50 to 4.00 mm2/mg and a weight of from 100 to 300 mg, particularly having a disintegration time in water of 7 seconds or less and an oral disintegration time of 6 seconds or less, a method for the production of said orally disintegrating tablet, and to a disintegrative particulate composition for use in said method.