Delayed Release Formulations
Delayed Release Formulations - Related Videos
03:50
A Technique to Generate a Novel Delivery Platform for a Delayed Burst Release of Molecules
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2025
This video demonstrates a method for the generation of a polymer bubble or polybubble-based novel platform that enables delayed burst release. Polyester-based polymers are used to form the polybubbles with core-shell structure, and small molecules and antigens can be used as cargo.
01:11
Oral Drug Delivery Systems: Delayed-Release Systems
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2026
Delayed-release drug delivery systems are specialized pharmaceutical formulations designed to postpone the release of active compounds until the drug reaches a specific region of the gastrointestinal (GI) tract, typically the intestine. These systems are essential for drugs that may cause gastric irritation, are unstable in acidic environments, or need to exert therapeutic effects locally in the intestinal or colonic regions.The core feature of delayed-release systems is the use of enteric...
08:55
Formulations for Freeze-drying of Bacteria and Their Influence on Cell Survival
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Cited by 22 •
2013
Freeze-drying is often an easy and convenient way to obtain dry products of viable bacterial cells. An issue of the process is cell survival. We detail here a procedure to investigate how cell survival during freeze-drying is influenced by the properties of the formulation used.
07:05
The Precision of Visual Working Memory with Delayed Estimation
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Human memory is limited. Throughout most of its history, experimental psychology has focused on investigating the discrete, quantitative limits of memory—how many individual pieces of information a person can remember. Recently, experimental psychologists have also become interested in more qualitative limits—how precisely is information stored? The concept of memory precision can be both intuitive and elusive at once. It is...
07:47
Measuring Delay Discounting in Humans Using an Adjusting Amount Task
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Cited by 55 •
2016
Delay discounting refers to a decline in the value of a reward when it is delayed relative to when it is immediately available. We outline a computer-based delay discounting task that is easy to implement and allows for the quantification of the degree of delay discounting in human participants.
FAQs
Enteric coatings use materials that remain intact in acidic stomach conditions. As the dosage form moves into the small intestine, where pH is higher, the coating dissolves and permits the medication to be released. This pH-dependent behavior helps shift delivery away from the stomach and toward an intestinal site when formulation performance depends on that location.
Protective barriers and timed-release systems provide alternatives to a pH-triggered coating. A barrier can shield the medication during transit, whereas a timed design postpones release according to the system’s release schedule. These approaches broaden formulation options when delivery goals cannot be met solely by relying on the contrast between acidic stomach conditions and the higher pH of the small intestine.
Release timing can protect acid-sensitive drugs from degradation before they reach the intended intestinal region. It may also reduce direct exposure of the stomach to medicines that cause gastric irritation. These effects connect formulation behavior with both chemical stability and clinical tolerability, making release location a central design consideration.
During oral drug development, teams can evaluate whether an enteric coating, pH-sensitive polymer, protective barrier, or timed-release system best matches the intended release pattern. Formulation design must account for the desired gastrointestinal region and the medication’s sensitivity to stomach conditions. This assessment links dosage-form selection with expected treatment performance and tolerability.
They may be considered when oral treatment would benefit from intestinal rather than gastric delivery, when a drug is vulnerable to acid-related degradation, or when reducing gastric irritation is important. In these settings, delayed release supports a clinical strategy that aligns the dosage form with the desired delivery region and patient tolerability goals.
By postponing medication release, the formulation changes when the drug becomes available along the gastrointestinal tract rather than exposing it immediately in the stomach. That timing is relevant to pharmacokinetic assessment, because release location and schedule are formulation variables. It also supports patient-centered dosing strategies when treatment goals include improved tolerability or appropriately targeted intestinal delivery.