Effervescent tablets: what’s really making them fizz?
Drop an effervescent tablet into water and it fizzes away in seconds.
Traditional quality tests can measure how fast it dissolves and whether it meets specifications.
What they don’t show is what’s happening inside the tablet itself.
The internal arrangement of ingredients is invisible to conventional testing, yet it can reveal critical information about manufacturing consistency and product quality.
Hidden variations in ingredient distribution may not be visible from the outside, but they can provide early indicators of process deviations, blend uniformity issues, or batch variability.
By looking beyond performance testing and into the tablet’s internal structure, manufacturers gain a new level of process understanding and quality assurance.
Looking inside with micro-CT
Using X-ray micro-computed tomography (micro-CT), Novitom creates a digital twin of the tablet’s internal structure without cutting, dissolving, or altering the sample.
By segmenting each ingredient based in the characteristics, individual formulation components can be visualized and quantified. In this example, micro-CT identified:
- Citric acid: 45% of tablet volume
- Sodium bicarbonate: 20% of tablet volume
- Vitamins, plant extracts and binder matrix: 35% of tablet volume
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The analysis also confirmed that citric acid was intentionally present in excess, ensuring complete COâ‚‚ generation while supporting product stability and taste.
How the ingredients are arranged inside a tablet
Micro-CT helps formulation and quality teams answer critical questions:
- Are ingredient proportions consistent between batches?
- Is the active ingredient distributed as intended?
- Does the tablet’s internal structure match the reference standard?
In complement to proving that a tablet passes dissolution testing, micro-CT reveals why it performs as expected, providing direct insight into formulation quality and manufacturing consistency.
Curious what’s really inside your product? Novitom’s non-destructive micro-CT imaging can show you.
FAQ: Micro-CT analysis of effervescent tablets
What is micro-CT for tablet analysis?
Micro-CT (X-ray micro-computed tomography) is a non-destructive imaging technique that creates a high-resolution 3D model of a tablet’s internal structure. It allows manufacturers to inspect the inside of a tablet without cutting, dissolving, or damaging it.
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What can micro-CT show inside an effervescent tablet?
Micro-CT can visualize and measure:
- Ingredient distribution
- Particle size and particle location
- Density variations
- Internal porosity and air pockets
- Cracks, voids, and manufacturing defects
- Batch-to-batch structural consistency
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Can micro-CT distinguish different ingredients?
Yes. When ingredients have different X-ray densities, Micro-CT can segment and quantify them in 3D. This allows manufacturers to see where ingredients are located and whether they are distributed as intended throughout the tablet.
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Why is ingredient distribution important?
The distribution of ingredients affects dissolution, effervescence performance, dose uniformity, and product consistency. Uneven distribution can lead to variations in tablet performance even when tablets appear identical externally.
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How does micro-CT support quality control?
Micro-CT enables quality and formulation teams to verify:
- Whether ingredients are evenly distributed
- Whether tablets match the target formulation
- Whether production batches are structurally consistent
- Why a tablet passes or fails performance testing
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What are the advantages of Micro-CT compared to traditional testing?
Unlike destructive testing methods, Micro-CT provides a complete 3D view of the tablet while keeping the sample intact. This makes it possible to investigate internal structure, quantify components, and compare batches without altering the product.
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What value does micro-CT provide to pharmaceutical and nutraceutical manufacturers?
Micro-CT transforms hidden internal structures into measurable data. It helps manufacturers understand how a product is built, validate formulation consistency, investigate failures, and optimize product performance with direct visual evidence.
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