United States · FDA National Drug Code directory
Diphenhydramine HCL
A source-listed medicine record.
Factual source checks only. This page is not a clinically reviewed monograph. Historical or discontinued records may be included; listing does not confirm approval, current availability or pharmacy stock.
Medicine identity
- Source reference
- 66424-021_2ba30474-41ba-6c1a-e063-6394a90a9631
- Product NDC
- 66424-021
- Form
- CAPSULE
- Composition / generic term
- Diphenhydramine HCL
- Labeler
- SDA Laboratories, Inc.
- Marketing category
- OTC MONOGRAPH DRUG
- Marketing start / end (source format)
- 20100127
- Source listing expiry
- 20261231
Source-listed ingredients
- DIPHENHYDRAMINE HYDROCHLORIDE — 50 mg/1
These values do not establish equivalence or a dose recommendation.
Packages
- 100 CAPSULE in 1 BOTTLE, PLASTIC (66424-021-01) · 66424-021-01
- 1000 CAPSULE in 1 BOTTLE, PLASTIC (66424-021-10) · 66424-021-10
Source and coverage
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Snapshot retrieved: 2026-09-17. This is the acquisition date, not a medical review date.
Clinical information, images and comparisons appear only when separately reviewed for this record. Coverage may be incomplete. Ask a pharmacist or clinician about your treatment.
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