
Multi-Formula Coating for ODFs: Tackling Combination Drug Challenges
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As Oral Dissolvable Films (ODFs) expand their role in both pharmaceuticals and functional supplements, multi-ingredient formulations have become a key development trend. Whether it’s drug combinations or synergistic nutrition (like vitamins and minerals), ensuring stable, uniform distribution of multiple actives on a single film presents a serious technical challenge.
Industry Pain Points
Traditional single-solution coating methods face the following limitations when formulating multi-ingredient ODFs:
- Incompatible solubility leads to sedimentation or phase separation
- Uneven API distribution affects dissolution curve consistency
- Formulation ratios become unstable during scale-up
- Cross-interactions between actives hinder quality and compliance
These issues severely limit the industrialization of combination ODFs. In pharma registration, poor dissolution consistency can directly lead to rejection.
HUANGHAI’s Multi-Formula Coating Solution
HUANGHAI has developed a patented stripe-style multi-formula coating process that enables precise zone-based coating on a shared substrate:
- Independent Zones: Physically separate each formulation area to prevent cross-contamination
- Micron-Level Precision: Achieved via blade-type coating, ensuring uniform thickness
- Flexible Design: Supports dual, triple, or more component zones per film
- GMP Compatibility: Enables consistent, repeatable results for registered drug products
This technology is ideal for formulation screening during pharmaceutical R&D, as well as functional food innovation at lab and pilot scale.
Patent Backing
This coating method is protected under Chinese patent CN117323228A, viewable on Google Patents.
Recommended Equipment
- MJ150-L ODF Coating Machine – For small- and medium-scale production
- MJ150 ODF Coating Machine – For commercial-scale manufacturing
Conclusion
Combination ODFs are driven by real-world market needs, but demand robust technical execution. HUANGHAI’s multi-formula coating innovation provides a scalable, compliant solution from formulation to registration—making “multi-API, one film” a commercial reality.