Rx Published February 6, 2015 at 590 × 233 in Medicine and the Metric System Prescriptions are written in metric units. Conversions (and possible errors) are made at the pharmacy. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to email this to a friend (Opens in new window)MoreClick to print (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Like this:Like Loading...