Fiona Catherine Jerry, India Pharma Outlook Team | Friday, 04 August 2023
Pharmaceutical pellets are designed to release the medication slowly over a period of time, allowing for a more controlled and sustained release of the drug into the body. This method of delivery is particularly beneficial for medications that require a longer duration of action or those that may cause irritation or side effects if released all at once. These pellets can be customized to have different release profiles, such as immediate-release, delayed-release, or extended-release, depending on the specific needs of the medication and the patient.
Some examples of medications that can be formulated into pellets include painkillers, antidepressants, and hormone therapies. The immediate-release pellets are designed to provide an instant effect, while the delayed-release pellets are formulated to release the drug after a specific period of time or upon reaching a certain pH level in the body. Extended-release pellets, on the other hand, slowly release the drug over an extended period, ensuring a steady concentration in the bloodstream. Overall, the use of pellets as a drug delivery system offers flexibility and enhanced therapeutic outcomes for patients.
Improved Drug Release and Bioavailability Pharmaceutical pellets enable the development of controlled-release drug formulations. By coating the pellets with polymers of varying thicknesses, drug release can be modified to achieve different release rates—sustained, extended, or pulsatile. Controlled-release formulations provide a steady and prolonged drug release, reducing the frequency of dosing and improving patient compliance. Pellets can be formulated to improve the bioavailability of poorly soluble drugs. Coating the drug particles onto the surface of the pellets can increase the surface area available for dissolution, leading to improved drug absorption in the gastrointestinal tract. For example, a controlled-release formulation of pain medication can be developed using pellets that release the drug at a sustained rate over a prolonged period of time. This allows patients to take the medication less frequently, improving convenience and adherence to the treatment regimen. As a result, the drug's therapeutic efficacy is enhanced, and lower doses can be used to achieve the desired therapeutic effect, reducing the risk of side effects.
Versatility in Dosage Forms and Administration Pharmaceutical pellets offer versatility in designing multilayered dosage forms. Each layer can contain a different drug or a combination of drugs, allowing for the development of fixed-dose combinations or sequential-release formulations. This flexibility is particularly valuable for treating complex diseases with multiple symptoms or addressing multiple aspects of a disease with different therapeutic agents. Pellets can be encapsulated in gelatin or vegetarian capsules, providing an attractive alternative to traditional tablets. Pellet-filled capsules offer advantages such as uniform drug distribution within the capsule, reduced risk of dose dumping, and faster disintegration and dissolution, leading to faster drug release and the onset of action. For example, in the treatment of cancer, pellet-filled capsules can be used to deliver multiple chemotherapeutic agents simultaneously, targeting different aspects of the disease such as tumor growth, angiogenesis, and metastasis. This approach allows for a more comprehensive and effective treatment strategy by addressing the complexity and heterogeneity of cancer cells.
Gastrointestinal Tolerance and Reduced Side Effects Pharmaceutical pellets are frequently coated with polymers that provide gastro-resistant or delayed-release characteristics. This property protects the drug from degradation in the acidic environment of the stomach, preventing gastric irritation and enhancing drug stability. Moreover, gastro-resistant pellets ensure that the drug is released in the intestine, where it can be absorbed effectively.With advances in technology, pharmaceutical pellets can be engineered to achieve targeted drug delivery to specific sites in the gastrointestinal tract. For example, mucoadhesive pellets can adhere to the mucus lining of the intestine, allowing for localized drug release. Targeted drug delivery minimizes systemic side effects and maximizes the drug's therapeutic effect at the intended site of action. In a specific example, let's consider a patient with Crohn's disease who requires targeted delivery of an anti-inflammatory drug to the inflamed regions of their intestine. By formulating the drug into mucoadhesive pellets, these pellets can selectively adhere to the inflamed mucosal lining and release the medication directly at the site of inflammation.
This approach not only reduces systemic side effects but also enhances the drug's efficacy in treating the disease by delivering it precisely where it is needed. Pharmaceutical pellets are a versatile drug delivery system that has a number of benefits, including improved drug release, increased bioavailability, reduced side effects, and a variety of dosage forms. They are a desirable option for creating multilayered formulations, targeted drug delivery systems, and controlled-release medications due to their special qualities and flexibility. As pharmaceutical technologycontinues to advance, pharmaceutical pellets are likely to play an increasingly significant role inoptimizing drug therapies and improving patient outcomes.Vishal Zinzuwadia, Chairman and Managing Director of AspriusLifesciences, commented on the drug's development, saying, "Our focus has always been on fostering innovation to develop groundbreaking pharma products."