iMedix Medical Content Engine 3.13.37

Ingredient

Diphenhydramine

Small molecule Histamine-1 Receptor Antagonist

Identity

Verified ingredient identity
Diphenhydramine
Entity type
Small molecule
Pharmacological class
Histamine-1 Receptor Antagonist
Salt forms
  • Diphenhydramine hydrochloride

Found in verified medicines 15 verified medicines

Single-ingredient medicines 14

Products whose only active ingredient is Diphenhydramine

  • Wal-Dryl Allergy as Diphenhydramine hydrochloride Drug Status Over-the-Counter · Form Oral tablet, liquid gel
  • Diphenhydramine Hcl as Diphenhydramine hydrochloride Drug Status Over-the-Counter · Form Oral tablet, capsule, liquid gel, oral liquid, topical cream, injection · Strength 25 mg, 50 mg
  • Zzzquil as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Z-Sleep as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Wal-Sleep Z as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Unisom Sleepmelts as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Total Allergy as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Sleeping as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Sleep II as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Nytol QUICKCAPS as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Nighttime Sleep Aid as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Nighttime Allergy Relief as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • Multi-Symptom Allergy Relief as Diphenhydramine hydrochloride Drug Status Over-the-Counter
  • EZ Nite Sleep as Diphenhydramine hydrochloride Drug Status Over-the-Counter

Combination medicines 1

Products that contain Diphenhydramine together with other active ingredients

Product facets

Single-ingredient medicines
14
Combination medicines
1
Distinct partner ingredients
1
Dosage forms
  • Oral tablet, liquid gel
  • Oral tablet, capsule, liquid gel, oral liquid, topical cream, injection
Strengths from single-ingredient medicines
  • 25 mg
  • 50 mg
Partner ingredients

Scientific reference data

UNII
8GTS82S83M
PubChem CID
3100
RxNorm
3498
iMedix entity id
ing_000237

Data provenance

Ingredient identity
Verified by the iMedix ingredient vocabulary
Medicine mappings
15 verified medicine relationships
Sources
Verified structured records
Technical details
Entity source
seed seed:v1.1
Alias sources
seed: 1
Mapping methods
exact_alias: 14 · raw_rule: 1
Relationship sources
seed seed:v1.1: 15
Graph version
17
Public index evaluated
2026-10-16 14:08:40 UTC