The short version
Just 2 companies supply this market — thin enough that a single exit would be felt immediately.
Market view
4 marketed package NDCs · 2 active manufacturers
Most dispensed: 500 mg; DIPHENHYDRAMINE HYDROCHLORIDE 25 mg · Tablet, Coated · #1 bottle, plastic/box / 50 tablet, coated in 1 bottle, plastic · 500 mg; DIPHENHYDRAMINE HYDROCHLORIDE 25 mg · Tablet, Coated · #1 bottle, plastic/carton / 20 tablet, coated in 1 bottle, plastic · 500 mg; DIPHENHYDRAMINE HYDROCHLORIDE 25 mg · Tablet, Film Coated · #1 bottle/carton / 50 tablet, film coated in 1 bottle · 500 mg; DIPHENHYDRAMINE HYDROCHLORIDE 25 mg · Tablet · #1 bottle/carton / 50 tablet in 1 bottle
Just 2 companies supply this market — thin enough that a single exit would be felt immediately.
Every detected change for acetaminophen, diphenhydramine hcl, 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.