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Commonly Used Medical Abbreviations. How Often to Take Your Medication. ad lib - freely, as needed bid - twice a day prn - as needed q - every q3h - every 3 hours q4h - every 4 hours qd - every day qid - four times a day qod - every other day tid - three times a day.
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How Often to Take Your Medication ad lib - freely, as neededbid - twice a dayprn - as neededq - everyq3h - every 3 hoursq4h - every 4 hoursqd - every dayqid - four times a dayqod - every other daytid - three times a day
When to Take Your Medication • ac - before mealshs - at bedtimeint - between mealspc - after meals
How Much Medication to Take • caps - capsulegtt - dropsi, ii, iii, or iiii - the number of doses (1, 2, 3, or 4)mg - milligramsml - millilitersss - one halftabs - tabletstbsp - tablespoon (15ml)tsp - teaspoon (5ml)
How to Use Your Medication • ad - right earal - left earc or o - withod - right eyeos - left eyeou - both eyespo - by mouths or ø - withoutsl - sublingualtop - apply topically