Tamper-Resistant Opioid Dosage Form via Gel Viscosity
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Solution Overview
Problem
Current pharmaceutical dosage forms for opioid analgesics are vulnerable to tampering and abuse, particularly parenteral and nasal abuse, as they can be crushed or dissolved for illicit use, and existing solutions rely heavily on antagonist inclusion to deter misuse.
Innovation Solution
An immediate release solid oral dosage form comprising particles with a core of gelling agent, a barrier layer, and an active layer, where the barrier layer is made of hydroxypropylmethylcellulose, polyvinyl alcohol, or povidone, preventing drug absorption through high viscosity when mixed with liquid, thereby reducing tampering and abuse potential.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If an opioid analgesic is formulated for immediate release, then rapid pain relief is achieved, but the formulation becomes susceptible to crushing and parenteral abuse
Solution Approach 1:
The dosage form is divided into multiple particles or granules, each containing the opioid analgesic. This segmentation maintains immediate release properties while making the formulation less susceptible to complete crushing and extraction, as the dispersed particles are more difficult to process for illicit use compared to a single intact tablet or capsule.
Solution Approach 2:
The opioid analgesic is combined with specific excipients or formulation materials that create a composite structure. This composite material maintains rapid dissolution and absorption for therapeutic effect while providing physical or chemical properties that deter crushing, extraction, or other tampering attempts for parenteral abuse.
2Reliability
If a barrier layer is added to prevent abuse, then tamper resistance is improved, but manufacturing complexity increases
Solution Approach 1:
Instead of creating a complex multi-layer barrier structure, the formulation applies tamper-resistant properties locally through the selection of specific excipients or materials mixed with the opioid analgesic. This local approach provides abuse deterrence without requiring complex layered structures, maintaining manufacturing simplicity while achieving the desired 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 dosage form achieves rapid drug release while significantly hindering parenteral and nasal absorption, providing a tamper-resistant formulation that maintains effective plasma levels and reduces abuse potential.
Implementation Method 1
An immediate release solid oral dosage form comprising particles with a core of gelling agent
Implementation Method 2
preventing drug absorption through high viscosity when mixed with liquid
Implementation Method 3
a barrier layer, made of hydroxypropylmethylcellulose, polyvinyl alcohol, or povidone, preventing drug absorption
Data Source
Figure 1
AI summary
Disclosed in certain embodiments is an oral dosage form comprising a plurality of particles, each particle comprising (i) a core comprising a gelling agent; (ii) an optional barrier layer encompassing the core; (iii) an active layer comprising a drug susceptible to abuse encompassing the core or barrier layer; and (iv) an optional controlled release excipient; wherein the dosage form provides an immediate or controlled release; and wherein the viscosity of the dosage form mixed with from about 0.5 to about 10 ml of an aqueous liquid is unsuitable for parenteral or nasal administration.