Double-Check Microgram and Milligram Calculations

Mix-ups with micrograms (mcg) and milligrams (mg) can cause dangerous dosing errors...but you can help prevent them.

Recently two prescribers mistakenly ordered 0.5 mg (500 mcg) instead of 0.05 mg (50 mcg) of levothyroxine...a ten-fold dosing error.

In another case, an Rx for digoxin (Lanoxin, etc) was transcribed as 625 mcg rather than the correct 0.0625 mg (62.5 mcg).

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