The short version
Only one company currently supplies this market — there is no backup if it stumbles. The generic price is down 14% over the past year, to $41.29 per unit. The brand (Zomig) runs $108.94 per unit — 2.6× more. 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.