diphenhydramine
Drug ingredientThis chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
Where It Comes From
12 FDA-registered drug labelers
AARNA USA INC.
Bi-Mart
Catalent Pharma Solutions, LLC
Chain Drug Consortium,LLC
InvaTech Pharma Solutions LLC
Medtech Products Inc.
PUBLIX SUPERMARKETS, INC
Rising Pharma Holdings, Inc.
SAFEWAY
Swati Spentose Private Limited
Tender Corporation d/b/a Adventure Ready Brands
Walgreens
Why It Matters
Sectors
Health
Downstream Uses
Appears in 7 drug and cosmetic product listings (FDA).
- •Percogesic Extra Strength
- •Acetaminophen Diphenhydramine HCL
- •Dimetane
- •Acetaminophen and Diphenhydramine HCL
- •Acetaminophen and Diphenhydramine Hydrochloride
- •Itch Eraser Gel
- •Diphenhydramine HCL 12.5 MG PER 5 ML
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Vendor Pricing
$1.96/gAaron Chemicals LLC
CountryHong Kong
Pack$196.00 / 100 g
Purity98%
Vendors13 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
12 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $2.11 | 100 g | 95% |
| A2B Chem LLC | United States | $3.56 | 25 g | 96% |
| AA BLOCKS | United States | $4.24 | 25 g | 98% |
| Combi-Blocks, Inc. | United States | $4.75 | 100 g | 96% |
| AstaTech, Inc | United States | $6.32 | 25 g | 95% |
| Fulfilled by Molport | Latvia | $9.00 | 1 g | 98% |
| Angene International Limited | United States | $14.16 | 25 g | 95% |
| MedKoo Biosciences, Inc | United States | $30.00 | 25 g | 98% |
| Molnova | China | $100.00 | 500 mg | 99% |
| TargetMol Chemicals | China → United States | $110.00 | 500 mg | 99.49% |
| MedChemExpress MCE | Sweden | $251.68 | 250 mg | 99.56% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
Chemical Identity
CAS58-73-1
PubChem CID3100
DTXSIDDTXSID4022949
FormulaC17H21NO
Mol. Weight255.35 g/mol
SMILESCN(C)CCOC(C1=CC=CC=C1)C2=CC=CC=C2
Data Sources
31002026-04-07
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/diphenhydramine/cids/JSON
Archive: data/sources/pubchem_name/diphenhydramine.json
CAS 58-73-12026-04-24
https://www.epa.gov/tsca-inventory
Archive: data/sources/tsca/tsca_inventory.csv
bulk match2026-04-07
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json