Calcium Acetate Capsule Granules for Palatability
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Solution Overview
Problem
Conventional calcium acetate formulations face challenges in palatability and dosage size, with large quantities required for effectiveness and an unpleasant chalky taste, making them difficult to administer, especially for patients with chronic renal disease.
Innovation Solution
A calcium acetate capsule formulation using granules with a bulk density of less than 0.55 g/cc, combined with glidants and lubricants, is produced through a simplified process involving roller compaction and encapsulation, allowing for efficient filling without additional equipment modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional calcium acetate formulations are used, then the active ingredient can be administered, but the dosage size becomes large and the taste becomes unpleasant
Solution Approach 1:
The calcium acetate is divided into granules of specific size ranges (0.5-2.0 mm, 0.3-1.5 mm, or 0.2-1.0 mm) rather than using large tablets or bulk powder. This segmentation allows the active ingredient to be distributed in smaller, more palatable units that can be easily administered while maintaining the required dosage effectiveness.
Solution Approach 2:
The patent uses capsule shells as an intermediary to enclose the granulated calcium acetate. The capsule acts as a barrier between the unpleasant-tasting active ingredient and the patient, masking the chalky taste while still delivering the required dosage. The capsule formulation specifically addresses the palatability issue without compromising the pharmacological effectiveness.
2Quantity of substance
If multiple doses are administered to achieve effectiveness, then the required dosage amount is met, but the frequency of administration increases
Solution Approach 1:
The patent optimizes the bulk density parameter of calcium acetate to specific ranges (0.40-0.70 g/cc, preferably 0.45-0.65 g/cc) to improve flow characteristics and enable accurate dosing in single capsules. This parameter optimization allows the entire effective dose to be delivered in one administration rather than requiring multiple doses throughout the day.
Solution Approach 2:
The calcium acetate is pre-processed through granulation to specific size ranges and bulk density specifications before encapsulation. This preliminary processing ensures that the active ingredient has optimal flow and filling characteristics, allowing for precise single-dose encapsulation that provides complete effective dosing in one administration rather than requiring multiple separate doses.
3Productivity
If a simplified manufacturing process is used, then production efficiency increases, but the ability to mask unpleasant taste may be compromised
Solution Approach 1:
The patent combines multiple functions into a single granulation and encapsulation process. The granulation step simultaneously creates the appropriate particle size distribution for palatability and establishes the bulk density for optimal flow and filling. The encapsulation step then encloses the granulated material in a single operation, merging taste masking with dosage delivery in one efficient process that maintains both productivity and palatability.
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 process results in a more palatable and effective calcium acetate product with improved flowability and dissolution rates, reducing the unpleasant taste and dosage size issues, while maintaining commercial viability and adhering to pharmaceutical standards.
Implementation Method 1
The calcium acetate is granulated using a roller compactor
Data Source
AI summary
The present invention relates to a pharmaceutical calcium acetate formulation and a process for making the same. In particular, the present invention relates to a calcium acetate capsule formulation comprising granules comprising calcium acetate along with other formulation adjuvants contained within a pharmaceutically acceptable capsule.