The short version
11 companies supply this market — deep enough that no single failure threatens the supply. The brand price is up 19% over the past year, to $0.2658 per mL. It is in shortage right now — FDA lists the reason as “requirements related to complying with good manufacturing practices”. Put together: worth watching — several of the pressures that precede supply trouble are present at once.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.