PTCB Study Guide: Extended-Release Medications

Extended-Release Medications

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These medication dosage forms are called extended-release, sustained release, long-acting, or controlled release. Although the exact meaning of these terms differ in some respects, each of these terms implies a gradual release of medication over a long period time.<br />
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<table style="width: 100%;">  <tbody>
<tr>
    <td>CD</td>
    <td>Controlled-diffusion</td>  
  </tr>
<tr>
    <td>CR</td>
    <td>Controlled-release, continuous-release</td>  
  </tr>
<tr>
    <td>CRT</td>
    <td>Controlled-release tablet</td>  
  </tr>
<tr>
    <td>LA</td>
    <td>Long-acting</td>  
  </tr>
<tr>
    <td>SA</td>
    <td>Sustained-action</td>  
  </tr>
<tr>
    <td>SR</td>
    <td>Sustained-release, slow-relaese</td>  
  </tr>
<tr>
    <td>TD</td>
    <td>Time-delay</td>  
  </tr>
<tr>
    <td>TR</td>
    <td>Time-release</td>  
  </tr>
<tr>
    <td>XL</td>
    <td>Extra-long</td>  
  </tr>
<tr>
    <td>XR</td>
    <td>Extended-release</td>  
  </tr>
</tbody></table>

Extended-Release Medications

These medication dosage forms are called extended-release, sustained release, long-acting, or controlled release. Although the exact meani...

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