Segmented Soft Gelatin Capsule for API Compatibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pharmaceutical formulations face challenges in combining multiple active pharmaceutical ingredients (APIs) in capsules due to chemical incompatibilities and bioavailability issues, particularly with soft gelatin capsules, where uniform coating is difficult to achieve, especially for oblong shapes and in the presence of water-soluble gelatin.
Innovation Solution
A pharmaceutical composition comprising a soft gelatin capsule with omega-3 fatty acids as the first API and a statin compound as the second API, coated with various types of coatings such as immediate release, enteric, or sustained release coatings to address incompatibilities and ensure bioavailability, using conventional manufacturing methods and controlling coating deposition and temperature to achieve uniformity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple APIs are combined in a capsule formulation, then convenience and potential synergistic effects are improved, but chemical incompatibilities and bioavailability issues arise
Solution Approach 1:
The invention divides the capsule into two separate compartments: an inner capsule containing the first API (omega-3 fatty acids) and an outer capsule containing the second API (statin compound). This physical segmentation prevents direct contact between the two APIs, eliminating chemical incompatibilities while maintaining the convenience of fixed-dose combination therapy.
Solution Approach 2:
The inner capsule is placed inside the outer capsule, creating a nested structure. The inner capsule acts as a container within the outer capsule, allowing both APIs to be delivered in a single unit dose without direct interaction. This nesting approach resolves the contradiction by providing physical separation while maintaining combination therapy benefits.
2Reliability
If APIs are coated on soft capsule, then potential chemical incompatibilities are avoided, but content uniformity becomes difficult to achieve due to low surface roughness and water solubility of gelatin
Solution Approach 1:
The invention uses a hard shell outer capsule instead of a soft gelatin capsule for the outer container. This hard shell provides a rigid, non-porous surface that accepts coating materials uniformly and does not dissolve in water, thereby achieving both chemical stability and manufacturing precision for the coating process.
3Reliability
If coating is applied to oblong-shaped capsules, then protection and controlled release are improved, but uniform coating on edges and axial regions becomes difficult
Solution Approach 1:
By segmenting the capsule into inner and outer hard-shell capsules, the invention creates a structure where the outer capsule can be uniformly coated on its entire surface including edges and axial regions. The hard shell geometry maintains uniform coating distribution while providing the desired protection and controlled release properties.
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 pharmaceutical grade finished dosage form with improved bioavailability and stability of both APIs, overcoming chemical incompatibilities and ensuring content uniformity, thus enhancing the efficacy of the drug combination.
Implementation Method 1
coated with at least one coating having at least one second active pharmaceutical ingredient
Implementation Method 2
the intrinsic solubility of the shell components in water
Data Source
Figure 1
AI summary
Pharmaceutical compositions in unit dose form comprising capsules containing one or more first active pharmaceutical ingredient in a pharmaceutically acceptable vehicle, coated with one or more second active pharmaceutical ingredients, wherein the unit dose form is a pharmaceutical grade finished dosage form, and methods of making and using the same.