The short version
32 companies supply this market — deep enough that no single failure threatens the supply.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Diphenhydramine HCl · DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 · Capsule · Oral · Gendose Pharmaceuticals, LLC
NDC 77333-0227-10 · 100 BLISTER PACK in 1 BOX / 1 CAPSULE in 1 BLISTER PACK · OTC MONOGRAPH DRUG · View full market →
32 companies supply this market — deep enough that no single failure threatens the supply.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Medicare Part D does not cover over-the-counter drugs — by law it pays only for products requiring a prescription.
How Part D pricing works →No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Not scored — fragility is computed for NADAC-priced NDCs.
sole-source market · price up 4% YoY
For scale: the typical drug’s chance is about 0.1% — this one is in ordinary territory.
Backtested statistical model over the whole market, not this package alone. Model details →
No FDA shortage reports for this drug or its presentations.
No enforcement reports list this package NDC.
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Harris Teeter, LLC | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| NuCare Pharmaceuticals, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| QUALITY CHOICE (Chain Drug Marketing Association) | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Safeway, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Aarna Usa Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Aarna Usa Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Akron Pharma Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Akron Pharma Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Amerisource Bergen | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Army And Air Force Exchange Service | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Bi-Mart | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Bryant Ranch Prepack | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Cardinal Health (Leader) 70000 | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Cardinal Health 107, LLC | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Chattem, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| CVS Pharmacy | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| CVS Pharmacy, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Dolgencorp, Llc | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| EQUATE (Wal-Mart Stores, Inc.) (see also WAL-MART INC) | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Family Dollar (FAMILY WELLNESS) | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| FSA Store Inc. (Caring Mills) | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Geiss, Destin & Dunn Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Gendose Pharmaceuticals, LLC | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Gendose Pharmaceuticals, LLC | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Good Sense (Geiss, Destin & Dunn, Inc.) | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| H E B | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Major Pharmaceuticals | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| NuCare Pharmaceuticals, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| NuCare Pharmaceuticals,Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| PD-Rx Pharmaceuticals, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| PD-Rx Pharmaceuticals, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Pharbest Pharmaceuticals, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Pharbest Pharmaceuticals, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Preferred Pharmaceuticals Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Preferred Pharmaceuticals, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Preferred Pharmaceuticals, Inc. | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Proficient Rx LP | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Proficient Rx LP | DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Reliable 1 Laboratories LLC | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Rite Aid Corporation | DIPHENHYDRAMINE HYDROCHLORIDE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Antihistamine — NDC 77333-0227-10," retrieved September 3, 2026, https://drugdashboards.com/drug/77333022710.
Free to cite with attribution — see how the data is put together.