Innovative dosage forms for targeted formulations

Pharmaceutical pellets are an innovative and versatile drug delivery form that is gaining importance in the pharmaceutical industry. These spherical starter cores offer many benefits, from targeted drug delivery to improved patient compliance.

Pellets vary in size, typically ranging from 60 µm to 1,400 µm. They allow precise control of the active substance’s release in the body, which enhances therapeutic effectiveness. Pellets can be classified into two main types: inert pellets, such as sugar or MCC pellets, and functional pellets, such as acid pellets like tartaric acid.

Manufacturing process of pellet formulations

The manufacturing process of pellet formulations uses spraying and coating techniques, layering the active ingredient and functional excipients onto each pellet. One major advantage of pharmaceutical pellets is that they can combine multiple active ingredients with different release profiles in a single dosage form. This feature is especially useful for treating diseases that require drug combinations or sustained, targeted release. By controlling release rates precisely, pellets reduce side effects and enhance therapeutic effectiveness.

Pellets also improve patient acceptance. They can be filled into capsules, embedded in tablets, or mixed into foods, making them easier to take—especially for patients who have difficulty swallowing pills. This convenience boosts therapy adherence and improves treatment outcomes. In pediatrics, pellets are particularly valuable. They allow dosing to be tailored for newborns, babies, and small children, often eliminating the need for complex re-formulations.

Advantage of pharmaceutical pellets in innovative dosage forms

Pros of Pharmaceutical Pellets

Precise Drug Release:
Pellets allow for controlled and targeted drug release, ensuring optimal therapeutic effects and minimizing side effects, such as dose dumping.
Versatile Formulation:
Pellets can combine multiple active ingredients with varying release profiles in a single dosage form, enabling effective combination therapies.
Improved Patient Compliance:
Smaller pellet sizes and various administration methods (e.g., capsule, tablet embedding) make them more palatable, increasing patient acceptance and adherence to treatment.
Enhanced Bioavailability:
Pellets can improve drug solubility and absorption, leading to enhanced bioavailability and therapeutic efficacy.
Flexible Dosage Adjustment:
Pellets allow for easy dose adjustments, making them suitable for pediatric, geriatric, and patients with special needs.
Reduced Side Effects:
Controlled drug release minimizes peak plasma concentrations, reducing the risk of adverse reactions.
Targeted Therapies:
Pellets can be designed for site-specific drug delivery, beneficial for conditions affecting specific areas of the body.

Myths about Pharmaceutical Pellets

Complex Manufacturing?
Manufacturing processes are often considered as challenging, especially the scale-up from development scale to pilot and production scale. Proven and established scale-up concepts for pellet layering and coating applying the Wurster technology are well discovered.
Scale-Up
Some people believe complex scale-up issues. In reality, that’s not the case, as pellet formulations are easily scalable with the right process technologies.
Micropellets
State-of-the-art production processes are applied for coating micropellets with sizes at 100 µm, such as fluidized bed processes. Avoiding particulate aggregation issues during coating of small particles.
high drug load
With one drug-layering step, a pellet drug load of up to 60 % is usually achievable. For a higher drug load of up to 80 %, a batch split must be applied most likely [1].
Not sticking on myths
Get in touch with CDMOs for pharmaceutical formulation of oral dosage forms, e.g. Glatt Pharmaceutical Services. Having professionals on-board will target your formulations goals with strong benefits.

Keep in mind that the advantages and misconceptions of pharmaceutical pellets can vary with the drug, patient population, and therapeutic goals. Therefore, carefully consider these factors when selecting pellets as an innovative dosage form. Additionally, partnering with a skilled CMDO allows you to fully maximize your drug formulation’s benefits.

Summary

Finally, pharmaceutical pellets represent a major innovation in drug formulation. In addition, their precise release, ability to combine multiple active ingredients, and enhanced patient acceptance boost drug efficacy and improve therapy outcomes. Furthermore, with continuous advances in pharmaceutical technology, we eagerly anticipate how this formulation technique will evolve in the future.

References

[1] Pharm. Ind. 84, Nr. 12, 1440–1450 (2022)