The short version
Just 2 companies supply this market — thin enough that a single exit would be felt immediately.
Market view
5 marketed package NDCs · 2 active manufacturers
Most dispensed: DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/10mL · Solution · #100 cup, unit-doses/box, unit-dose / 10 ml in 1 cup, unit-dose
Just 2 companies supply this market — thin enough that a single exit would be felt immediately.
Every detected change for diphenhydramine hcl oral, newest first — price moves, shortages, recalls, and manufacturers entering or leaving. Detected by comparing each day’s federal data against the day before.
Other molecules FDA puts in Histamine-1 Receptor Antagonist, with whether each is in shortage right now. Same class is not the same drug — substitution is a clinical decision, and this is a supply picture, not a recommendation.
Expand a strength to see its dosage forms, then package sizes, then each manufacturer and NDC. Click an NDC for its full detail page.