Which type of preparations allows drug effects to continue at the same level over a long period?

Question

Quizplus · Accepted Answer

Sustained release preparations are designed to release the drug slowly and steadily over an extended period, allowing for a constant level of drug effect. Enteric coated preparations protect the drug from stomach acid but do not necessarily make it last longer, troches are lozenges that dissolve in the mouth and syrups are liquids that are more easily absorbed but do not necessarily provide sustained release.

Which Type of Preparations Allows Drug Effects to Continue at the Same