The short version
16 companies supply this market — deep enough that no single failure threatens the supply. The price has fallen 38% in a year, to $0.2419 per gram — and generics that get this cheap tend to get abandoned rather than defended. 3 Class II recalls hit this product in the past year (Sun Pharmaceutical Industries Inc). 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.