Self-Emulsifying Sulfonamide Composition for Oral Absorption
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Solution Overview
Problem
Compounds with molecular weights of 500 or more exhibit low water solubility and membrane permeability, leading to decreased absorbability upon oral administration, and the effectiveness of self-emulsifying drug delivery systems (SEDDS) for improving these properties is unclear for sulfonamide derivatives.
Innovation Solution
A self-emulsifying composition comprising a sulfonamide derivative, a pharmaceutically acceptable salt, or an active metabolite thereof, combined with at least two solubilizers, including surfactants and auxiliary surfactants, to enhance solubility and membrane permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compound with molecular weight of 500 or more is used, then the therapeutic effect is improved, but the water solubility and membrane permeability decrease
Solution Approach 1:
The patent introduces self-emulsifying excipients as intermediary substances that facilitate the dissolution and absorption of the sulfonamide derivative. These excipients form mixed micelles or emulsions in the gastrointestinal tract, acting as a mediator between the poorly soluble drug and the aqueous environment, thereby improving bioavailability without changing the drug molecule itself.
Solution Approach 2:
The patent changes the physical and chemical parameters of the formulation by adjusting the HLB values of surfactant combinations, optimizing the ratio of different excipients, and controlling the particle size of the emulsion. These parameter changes enable the formulation to achieve optimal solubility and membrane permeability for high molecular weight compounds.
2Reliability
If a compound with molecular weight of 500 or more is used, then the therapeutic effect is improved, but the membrane permeability decreases
Solution Approach 1:
The self-emulsifying excipients serve as a mediator that facilitates drug transport across biological membranes. The formed micelles and emulsions enhance the interaction between the hydrophobic drug and the lipid bilayer of cell membranes, improving permeability for high molecular weight compounds that would otherwise have poor membrane crossing ability.
Solution Approach 2:
The patent creates a composite formulation system combining the sulfonamide derivative with multiple excipients having different HLB values and functional properties. This composite approach synergistically improves membrane permeability through the combined effects of different surfactants, oils, and other formulation components.
3Device complexity
If SEDDS is prepared with a single solubilizer, then the formulation is simple, but the solubility and membrane permeability improvement is insufficient
Solution Approach 1:
The patent combines multiple solubilizers with different HLB values and functional characteristics into a single SEDDS formulation. This merging of different excipients creates a synergistic effect where the combination provides superior solubility enhancement and membrane permeability improvement compared to any single solubilizer alone, while maintaining formulation simplicity.
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 composition significantly improves the absorbability of sulfonamide derivatives by forming emulsions in the gastrointestinal tract, enhancing solubility and membrane permeability.
Implementation Method 1
SEDDS is a formulation prepared by uniformly mixing, and dissolving or dispersing an active ingredient in the state of not containing water. In the case where SEDDS is orally administered, SEDDS is dispersed or dissolved in a water content in the gastrointestinal tract to form an emulsion
Data Source
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AI summary
Provided is a pharmaceutical composition containing a sulfonamide derivative represented by formula (1), a pharmaceutically acceptable salt thereof, or an active metabolite thereof, and having an improved absorption during oral administration. Disclosed is a self-emulsifying composition comprising a sulfonamide derivative represented by formula (1), a pharmaceutically acceptable salt thereof, or an active metabolite thereof, and at least two solubilizing agents.