Use WebMD 's Pill Identifier to find and identify any over-the-counter or prescription drug, pill, or medication by color, shape, or imprint and easily compare .How To Use the RxList Pill Identifier/Pill Finder Tool. Enter or Select from the drop down, the imprint code on the medication, The imprint is the letters, numbers or other markings on the pill, tablet or capsule. Select the color of the pill in the pull-down menu above..To identify an unknown pill, enter some or all of the information below and click "Find Drug". Marking/Imprint: Enter all or some of the letters and/or numbers from a capsule or 1 side of the tablet. If you cannot read the marking/imprint, search by color and/or shape..Use our Pill Identifier tool to quickly identify tablets and capsules using imprint codes, pill shape and color..