The short version
Just 3 companies supply this market — thin enough that a single exit would be felt immediately. The price has fallen 35% in a year, to $0.2298 per unit — and generics that get this cheap tend to get abandoned rather than defended. 2 Class II recalls hit this product in the past year (Ascend Laboratories, LLC). 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.