Sustained-release tablets are specially designed medications that release their active ingredients slowly over time. This allows for a more consistent level of the drug in the bloodstream, reducing the need for frequent dosing. They are often used for chronic conditions where steady medication levels are beneficial, such as in the treatment of hypertension or diabetes. These tablets are engineered with specific coatings or matrix systems that control the rate of drug release. This technology helps improve patient compliance, as individuals can take their medication less often while still receiving the necessary therapeutic effects. Examples of sustained-release formulations include metformin and morphine.