Controlled-release formulations are specialized drug delivery systems designed to release medication at a predetermined rate over an extended period. This approach helps maintain consistent drug levels in the bloodstream, improving therapeutic effectiveness and minimizing side effects. These formulations can be found in various forms, including tablets, capsules, and injectables. The technology behind controlled-release formulations often involves the use of polymers or other materials that regulate the release of the active ingredient. By controlling the release rate, these formulations can enhance patient compliance, as they may require fewer doses compared to traditional medications. Examples include sustained-release tablets and transdermal patches.