Vitamin E TPGS Oral Solutions for Bitter Drug Taste Masking
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Solution Overview
Problem
Existing bitter drugs, such as atomoxetine, pose challenges in oral formulations due to their unpleasant taste, leading to poor patient compliance, especially in pediatric populations, and current taste masking methods using cyclodextrin are not safe for long-term use.
Innovation Solution
Utilizing Vitamin E TPGS as a taste-masking agent in oral solutions, combined with water and optional auxiliary ingredients like co-solvents, preservatives, sweeteners, and flavoring agents, to create a palatable formulation for bitter active pharmaceutical ingredients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cyclodextrin is used as a taste masking agent, then the bitterness of drugs is masked, but the formulation is not safe for long-term use
Solution Approach 1:
The patent replaces cyclodextrin with Vitamin E TPGS, an excipient with established safety for long-term use. Vitamin E TPGS achieves effective bitterness masking while providing the safety profile needed for chronic therapeutic use, thus resolving the contradiction between masking effectiveness and long-term safety
Solution Approach 2:
The patent changes the chemical parameter of the taste masking agent from cyclodextrin to Vitamin E TPGS. This parameter change maintains the bitterness masking function while improving the safety profile for long-term use, directly addressing the technical contradiction
2Ease of operation
If atomoxetine is formulated as an oral solution for pediatric use, then patient compliance is improved, but the extreme bitterness prevents acceptance
Solution Approach 1:
Vitamin E TPGS acts as an intermediary substance that interacts with atomoxetine to mask its bitter taste. This mediator allows the oral solution to maintain therapeutic efficacy while eliminating the taste barrier that prevents pediatric acceptance and compliance
Solution Approach 2:
The patent changes the taste profile parameter of the atomoxetine oral solution by incorporating Vitamin E TPGS. This parameter change transforms the extremely bitter formulation into a palatable one, enabling pediatric use and improving compliance
3Object-affected harmful factors
If existing taste masking strategies are used, then some bitterness is reduced, but none provide effective masking for extremely bitter drugs like atomoxetine
Solution Approach 1:
The patent replaces conventional taste masking agents with Vitamin E TPGS, which provides superior and reliable bitterness masking for extremely bitter drugs like atomoxetine. This substitution achieves both effective masking and long-term safety for chronic use
Solution Approach 2:
The patent creates a composite formulation combining atomoxetine with Vitamin E TPGS. This composite approach provides reliable and effective bitterness masking that surpasses conventional single-agent masking strategies, specifically for extremely bitter medications
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 use of Vitamin E TPGS effectively masks the bitterness of drugs like atomoxetine, enhancing patient compliance by providing a palatable oral solution with a shelf-life of at least 45 days, suitable for pediatric use.
Implementation Method 1
Inclusion complexation is a system in which the guest molecule is included in the hollow space of a bunch or complexing agent. The complexing agent can cover the sour taste of drug both reducing its oral solubility on ingestion or decreasing the amount of drug particles uncovered for interaction with taste buds.
Data Source
AI summary
The invention involves novel, oral solutions of bitter drugs using Vitamin E TPGS as a masking agent and methods of using the same (e.g., for treating attention deficit/hyperactivity disorder (ADHD)). Atomoxetine (e.g., Atomoxetine HCl) is an example of a bitter drug whose bitterness can be masked by the presence of Vitamin E TPGS alone or in combination with additional ingredients.