How to save billions of dollars.

[Zenda]

Even trained people screw up all the time. If I were really getting the 0.5 MG daily dose of tacrolimus that my prescription bottle claims, I'd be writing this on a Ouija board instead of a keyboard.

A normal daily dose of tacrolimus happens to 0.5 mg. If you think that's wrong for you, you should contact your doctor and not blame the metric system.

Note that you used the lower case m = milli and he used the upper case M = mega.

Lowercase mg is the official notation for milligram, and there is no such thing as MegaGramms. He used uppercase for emphasis.