Oral Extended Release Forms are best described as

Oral Extended Release Forms are best described as

• A. A single-layer that dissolves quickly
• B. Multi-layer that dissolve at a different rate, can have spansules, uses diffusion, dissolution, osmotic systems. Ex. Plateau caps, Sequels, Extentabe, Repetabs
• C. A liquid that is rapidly absorbed
• D. A capsule that dissolves in the stomach instantly

Answer: (B)

Oral extended-release forms release the drug gradually over a longer period rather than all at once. They achieve this by using multi-layer designs or multipart systems where different layers or beads release at different rates. Techniques include diffusion through a polymer coating, gradual dissolution of a matrix, or osmotic pumping. Spansules and multi-layer capsules are classic examples, with products like plateau caps, Sequels, Extentabs, and Repetabs illustrating how multiple release zones work together to stretch the effect over time. This is why the description that emphasizes a multi-layer, differently releasing system best fits extended-release forms. The other descriptions point to immediate-release characteristics: a single-layer that dissolves quickly, a liquid that’s rapidly absorbed, or a capsule that dissolves in the stomach instantly—all of which do not provide the sustained release that extended-release formulations are designed to deliver.

Oral extended-release forms release the drug gradually over a longer period rather than all at once. They achieve this by using multi-layer designs or multipart systems where different layers or beads release at different rates. Techniques include diffusion through a polymer coating, gradual dissolution of a matrix, or osmotic pumping. Spansules and multi-layer capsules are classic examples, with products like plateau caps, Sequels, Extentabs, and Repetabs illustrating how multiple release zones work together to stretch the effect over time. This is why the description that emphasizes a multi-layer, differently releasing system best fits extended-release forms.

The other descriptions point to immediate-release characteristics: a single-layer that dissolves quickly, a liquid that’s rapidly absorbed, or a capsule that dissolves in the stomach instantly—all of which do not provide the sustained release that extended-release formulations are designed to deliver.