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PSNet: Patient Safety Network
Press Release/Announcement

Move toward full use of metric dosing: eliminate dosage cups that measure liquids in fluid drams. Use cups that measure mL.

Institute for Safe Medication Practices; ISMP; American Society of Health-System Pharmacists; ASHP.

Standard use of metric oral dosage instructions has been advocated as a medication safety strategy. Raising concerns around dosing cups that include drams and ounces as scales—measures no longer in clinical use—which are available from major vendors and may be found in health care facilities, this announcement recommends use of oral syringes that only measure in milliliters for oral liquid medications to prevent errors.