Maybe a mcg/mg mistake. Microgram vs. Milligram. That is a 1,000 dosage difference if that happened.
Speaking of pharmacy mistakes. About 15 years ago, RiteAid was giving my wife a birth control prescription for someone else when she was supposed to be getting a pre-natal vitamin subscription filled. Could have proved fatal to the unborn. To the state of CT that followed up, no big deal, nothing was done.
Needless to say we never went into any riteaid again.
I ended up getting "sorry" calls all the way from Bentonville, Arkansas on that one.
I had a service company that serviced Albertsons Grocery Stores.
A pharmacy at one of the stores I dealt with gave an old lady the wrong script and it killed her.
Family settled out of court for a couple million.
Just wait till 17 year old girls start buying Plan B over the counter,
with no knowledge of their medical history required, and taking it like
candy!