What characterizes an extended-release tablet or capsule?

An extended-release tablet or capsule is specifically designed to release the medication gradually over time, which allows for longer-lasting effects and often means it can be taken less frequently than immediate-release forms. The key characteristic of these formulations is their ability to maintain a steady level of medication in the bloodstream, minimizing peaks and troughs in drug concentrations.

Because of this gradual release mechanism, it is important that extended-release forms are not crushed or chewed. Crushing these tablets or capsules can lead to a rapid release of the entire dose at once, which can result in potential overdose and increased side effects. Therefore, the instruction to never crush or chew an extended-release medication is crucial for maintaining its intended therapeutic effect and ensuring patient safety.

The other options, while potentially true in different contexts for other types of medications, do not accurately describe the defining features of extended-release formulations.