Diphenhydramine Hydrochloride Injection
NDC 42571-511

View dosage, usage, ingredients, routes, and UNII mappings.
Table of Contents
  1. Product Information
  2. Product Packages
  3. What is NDC 42571-511?
  4. Diphenhydramine Hydrochloride Uses
  5. Active Ingredients
  6. Active Ingredients UNII Codes
  7. Inactive Ingredients UNII Codes
  8. NDC to RxNorm Crosswalk
  9. Pharmacologic Classes

Product Information

Diphenhydramine Hydrochloride is a ANDA-approved product labeled by Micro Labs Limited. This medication is typically used as a histamine h1 receptor antagonists [moa]. It is supplied as a injection for intramuscular; intravenous administration. This product entry covers the primary NDC 42571-511 and its associated package configuration. This profile includes active and inactive ingredient UNII references and FDA labeling data.

Primary Identification

NDC Product Code:
42571-511
Proprietary Name:
Diphenhydramine Hydrochloride
Non-Proprietary Name: [1]
Diphenhydramine Hydrochloride
Substance Name: [2]
Diphenhydramine Hydrochloride
NDC Directory Status:
Human Prescription Drug
Product Type: [3]
ACTIVE PRODUCT INCLUDED in the NDC Directory
Code Navigator:

Clinical Specifications

Dosage Form:
Injection - A sterile preparation intended for parenteral use; five distinct classes of injections exist as defined by the USP.
Administration Route(s): [4]
  • Intramuscular - Administration within a muscle.
  • Intravenous - Administration within or into a vein or veins.

Labeler & Regulatory Data

Labeler Name: [5]
Micro Labs Limited
Labeler Code:
42571
Product Label ID:
c2981222-1671-4ecd-a5a2-286f0663f1ae
FDA Application Number: [6]
ANDA219845
Marketing Category: [8]
ANDA - A product marketed under an approved Abbreviated New Drug Application.

Marketing Timeline

Start Marketing Date: [9]
11-01-2025
Listing Expiration Date: [11]
12-31-2026
Exclude Flag: [12]
N

Code Structure Chart

Product Details

What is NDC 42571-511?

The NDC code 42571-511 is assigned by the FDA to the product Diphenhydramine Hydrochloride. This pharmaceutical product is labeled by Micro Labs Limited and is currently categorized as listed product. The medication is a injection administered via intramuscular; intravenous route. In terms of distribution, this product is available in a single package configuration. The associated package NDC(s) include: 42571-511-56. Beyond standard identification, this entry provides technical data including pharmacologic classes, UNII ingredient references, and RxNorm cross-referencing for healthcare systems.

What are the uses of this product?

Diphenhydramine hydrochloride injection, is effective in adults and pediatric patients, other than premature infants and neonates, for the following conditions when diphenhydramine hydrochloride in the oral form is impractical.AntihistaminicFor amelioration of allergic reactions to blood or plasma, in anaphylaxis as an adjunct to epinephrine and other standard measures after the acute symptoms have been controlled, and for other uncomplicated allergic conditions of the immediate type when oral therapy is impossible or contraindicated.Motion sicknessFor active treatment of motion sickness. AntiparkinsonismFor use in parkinsonism, when oral therapy is impossible or contraindicated, as follows: parkinsonism in the elderly who are unable to tolerate more potent agents; mild cases of parkinsonism in other age groups, and in other cases of parkinsonism in combinations with centrally acting anticholinergic agents.

What are Active Ingredients of this product?

An active ingredient is the substance responsible for the medicinal effects of a product specified by the substance's molecular structure or if the molecular structure is not known, defined by an unambiguous definition that identifies the substance. Each active ingredient name is the preferred term of the UNII code submitted.
  • DIPHENHYDRAMINE HYDROCHLORIDE 50 mg/mL - A histamine H1 antagonist used as an antiemetic, antitussive, for dermatoses and pruritus, for hypersensitivity reactions, as a hypnotic, an antiparkinson, and as an ingredient in common cold preparations. It has some undesired antimuscarinic and sedative effects.

Which are the associated UNII Codes?

The UNII codes for the active ingredients in this product are:

  • DIPHENHYDRAMINE HYDROCHLORIDE (UNII: TC2D6JAD40)
  • DIPHENHYDRAMINE (UNII: 8GTS82S83M) (Active Moiety)

Which are the Inactive Ingredients associated UNII Codes?

The inactive ingredients are all the component of a medicinal product OTHER than the active ingredient(s). The acronym "UNII" stands for “Unique Ingredient Identifier” and is used to identify each inactive ingredient present in a product. The UNII codes for the inactive ingredients in this product are:

What is the NDC to RxNorm Crosswalk for this product?

RxNorm is a normalized naming system for generic and branded drugs that assigns unique concept identifier(s) known as RxCUIs to NDC products.The NDC to RxNorm Crosswalk for this produdct indicates multiple concept unique identifiers (RXCUIs) are associated with this product:

Which are the Pharmacologic Classes of this product?

A pharmacologic class is a group of drugs that share the same scientifically documented properties. The following is a list of the reported pharmacologic class(es) corresponding to the active ingredients of this product.

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Product & Regulatory Definitions
What is the Non-Proprietary Name? The non-proprietary name is sometimes called the generic name. The generic name usually includes the active ingredient(s) of the product.
What is the Substance Name? An active ingredient is the substance responsible for the medicinal effects of a product specified by the substance's molecular structure or if the molecular structure is not known, defined by an unambiguous definition that identifies the substance. Each active ingredient name is the preferred term of the UNII code submitted.
What kind of product is this? Indicates the type of product, such as Human Prescription Drug or Human Over the Counter Drug. This data element matches the “Document Type” field of the Structured Product Listing.
What are the Administration Routes? The translation of the route code submitted by the firm, indicating route of administration.
What is the Labeler Name? Name of Company corresponding to the labeler code segment of the Product NDC.
What is the FDA Application Number? This corresponds to the NDA, ANDA, or BLA number reported by the labeler for products which have the corresponding Marketing Category designated. If the designated Marketing Category is OTC Monograph Final or OTC Monograph Not Final, then the Application number will be the CFR citation corresponding to the appropriate Monograph (e.g. “part 341”). For unapproved drugs, this field will be null.
What is the Marketing Category? Product types are broken down into several potential Marketing Categories, such as NDA/ANDA/BLA, OTC Monograph, or Unapproved Drug. One and only one Marketing Category may be chosen for a product, not all marketing categories are available to all product types. Currently, only final marketed product categories are included. The complete list of codes and translations can be found at www.fda.gov/edrls under Structured Product Labeling Resources.
What is the Start Marketing Date? This is the date that the labeler indicates was the start of its marketing of the drug product.
What is the Listing Expiration Date? This is the date when the listing record will expire if not updated or certified by the product labeler.
What is the NDC Exclude Flag? This field indicates whether the product has been removed/excluded from the NDC Directory for failure to respond to FDA"s requests for correction to deficient or non-compliant submissions, or because the listing certification is expired, or because the listing data was inactivated by FDA, or because it was discontinued by the labeler. Possible values in this field are: "D", "E", "I", "N", "U".