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Hydralazine hydrochloride 37.5 MG / isosorbide dinitrate 20 MG Oral Tablet — RxCUI 905377

Name: Hydralazine hydrochloride 37.5 MG / isosorbide dinitrate 20 MG Oral Tablet (RxCUI 905377)
Creator: Brian Staiger, PharmD

RxNorm drug concept · Semantic clinical drug

RxCUI 905377 Semantic clinical drug · SCD ● Current RxNorm concept 6 FDA products 9 package NDCs Snapshot Jul 14, 2026

This page is curated, coded, and maintained by Dr. Brian Staiger, PharmD

Compiled from public NLM RxNorm and FDA (openFDA NDC directory) data sources. Editorial policy

What you’re looking at: the standardized identity of one medicine, as the U.S. drug-data system sees it. Below — every FDA-listed product, package code, price benchmark, and billing code that maps to it.

🗂️ Key Facts

RxCUI905377

Official nameHydralazine hydrochloride 37.5 MG / isosorbide dinitrate 20 MG Oral Tablet

Concept typeSemantic clinical drug (SCD)

RxNorm statusCurrent RxNorm concept

Also known asHydralazine Hydrochloride 37.5 MG / ISDN 20 MG Oral Tablet; isosorbide dinitrate 20 MG / hydrALAZINE HCl 37.5 MG Oral Tablet

FDA products mapped6

Package NDCs mapped9

Reported Medicaid activity (SDUD)4,770 prescriptions · 21 state & territory Medicaid programs · latest period Q4 2025

RxNorm release07/06/2026

Snapshot dataJul 14, 2026

📖 Skip the Codes — Read It in Plain English.

Our pharmacist-built guide to Hydralazine: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist

Hydralazine is used to treat high blood pressure (hypertension). The tablet form is taken at home on a daily schedule, while the injectable form is reserved for hospital use when b...
It works by relaxing the walls of your arteries, which allows them to widen. When arteries are wider, blood flows through them more easily and your blood pressure drops. It's not a...
How does hydralazine lower my blood pressure?
Common side effects include headache, nausea, a fast heartbeat, flushing, and dizziness — these often settle as your body adjusts or if your dose is tweaked. You should call your d...

📖 Read our full Hydralazine guide →

🕸️ Concept Web — How Hydralazine hydrochloride 37.5 MG / isosorbide d... Connects

One RxCUI never lives alone. Follow the path from the raw ingredient down to the exact strength-and-form concepts FDA products carry — every stop is a real RxNorm concept with its own identifier. Hover or focus any chip for what it means.

This page's concept Hydralazine hydrochloride 37.5 MG / isosorbide dinitrate 20 MG Oral Tablet RxCUI 905377 Semantic clinical drug · SCD

Every web starts here: one RxCUI, one fixed meaning in the RxNorm vocabulary.

Ingredients 4

The active substance itself — no strength, form, or brand attached yet.
- Hydralazine 5470 IN
- Isosorbide dinitrate 6058 IN
- Hydralazine / isosorbide dinitrate 608424 MIN
- Hydralazine hydrochloride 82027 PIN
Brand names 1

The same medicine's trade names. A brand name alone says nothing about strength or form.
- Bidil 303838 BN
Dose forms 13

The ingredient poured into a form — tablet, solution, cream — still without one fixed strength.
- Hydralazine / isosorbide dinitrate Oral Tablet 721832 SCDF
- Hydralazine hydrochloride / isosorbide dinitrate Oral Tablet 2646364 SCDFP
- Hydralazine / isosorbide dinitrate Oral Product 1161551 SCDG
- Hydralazine / isosorbide dinitrate Pill 1161552 SCDG
- Hydralazine hydrochloride / isosorbide dinitrate Oral Product 2662162 SCDGP
- Hydralazine hydrochloride / isosorbide dinitrate Pill 2659814 SCDGP
- Hydralazine / isosorbide dinitrate Oral Tablet [Bidil] 721814 SBDF
- Hydralazine hydrochloride / isosorbide dinitrate Oral Tablet [Bidil] 2656588 SBDFP
- +5 more in this family
Clinical & branded drugs 4

Ingredient + strength + dose form. These are the concepts real FDA products actually carry.
- Hydralazine hydrochloride 37.5 MG 905376 SCDC
- Isosorbide dinitrate 20 MG 381033 SCDC
- Hydralazine hydrochloride 37.5 MG / isosorbide dinitrate 20 MG Oral Tablet [Bidil] 905379 SBD
- Hydralazine hydrochloride 37.5 MG / isosorbide dinitrate 20 MG [Bidil] 905378 SBDC

Showing up to 8 concepts per family — 17 of 22 stored related concepts drawn.

These are official RxNorm vocabulary relationships — how concepts name and organize the same medicine. They do not establish therapeutic equivalence or substitutability: two concepts appearing in one web is never a statement that products can be swapped.

🔀 Generic ⇄ Brand Crosswalk

The same medicine has an unbranded (generic) identity and one or more brand-name identities — each with its own RxCUI. This is a naming relationship in RxNorm, not a statement that any two products are substitutable.

Generic (Clinical) Concepts

Hydralazine hydrochloride 37.5 MG SCDC · 905376
Isosorbide dinitrate 20 MG SCDC · 381033
Hydralazine / isosorbide dinitrate Oral Tablet SCDF · 721832
Hydralazine hydrochloride / isosorbide dinitrate Oral Tablet SCDFP · 2646364
Hydralazine / isosorbide dinitrate Oral Product SCDG · 1161551
Hydralazine / isosorbide dinitrate Pill SCDG · 1161552
Hydralazine hydrochloride / isosorbide dinitrate Oral Product SCDGP · 2662162
Hydralazine hydrochloride / isosorbide dinitrate Pill SCDGP · 2659814

Brand-Name Concepts

Hydralazine hydrochloride 37.5 MG / isosorbide dinitrate 20 MG Oral Tablet [Bidil] SBD · 905379
Hydralazine hydrochloride 37.5 MG / isosorbide dinitrate 20 MG [Bidil] SBDC · 905378
Hydralazine / isosorbide dinitrate Oral Tablet [Bidil] SBDF · 721814
Hydralazine hydrochloride / isosorbide dinitrate Oral Tablet [Bidil] SBDFP · 2656588
Bidil Oral Product SBDG · 1173648
Bidil Pill SBDG · 1173649
Bidil BN · 303838

📦 FDA Products & Package NDCs

6 products · 9 package NDCs

9 package NDCs map to RxCUI 905377 in the current snapshot — up to 50 per page. Each linked NDC opens its full package page.

Package NDC	Package	Brand / generic name	Labeler	Marketing start
24338-0010-09	90 TABLET, FILM COATED in 1 BOTTLE (24338-010-09)	BiDil	Azurity Pharmaceuticals, Inc.	2020-08-31
50742-0246-18	180 TABLET in 1 BOTTLE (50742-246-18)	Isosorbide dinitrate and hydralazine hydrochloride	Ingenus Pharmaceuticals, LLC	2022-04-12
50742-0246-90	90 TABLET in 1 BOTTLE (50742-246-90)	Isosorbide dinitrate and hydralazine hydrochloride	Ingenus Pharmaceuticals, LLC	2022-04-12
52536-0006-09	90 TABLET, FILM COATED in 1 BOTTLE (52536-006-09)	isosorbide dinitrate and hydralazine hydrochloride	Wilshire Pharmaceuticals	2022-04-15
72162-2343-09	90 TABLET, FILM COATED in 1 BOTTLE (72162-2343-9)	isosorbide dinitrate and hydralazine hydrochloride	Bryant Ranch Prepack	2024-07-01
72319-0012-03	90 TABLET, FILM COATED in 1 BOTTLE (72319-012-03)	isosorbide dinitrate and hydralazine hydrochloride	i3 Pharmaceuticals, LLC	2024-02-07
72319-0012-18	180 TABLET, FILM COATED in 1 BOTTLE (72319-012-18)	isosorbide dinitrate and hydralazine hydrochloride	i3 Pharmaceuticals, LLC	2024-02-07
73141-0012-03	90 TABLET, FILM COATED in 1 BOTTLE (73141-012-03)	isosorbide dinitrate and hydralazine hydrochloride	A2A Integrated Pharmaceuticals	2024-04-22
73141-0012-18	180 TABLET, FILM COATED in 1 BOTTLE (73141-012-18)	isosorbide dinitrate and hydralazine hydrochloride	A2A Integrated Pharmaceuticals	2024-04-22

Observed labelers: A2A Integrated Pharmaceuticals (2) · i3 Pharmaceuticals, LLC (2) · Ingenus Pharmaceuticals, LLC (2) · Azurity Pharmaceuticals, Inc. (1) · Bryant Ranch Prepack (1) · Wilshire Pharmaceuticals (1) — this is the FDA-listed mapping footprint, not sales, inventory, availability, or market share.

🗃️ Sources & Limits

Atlas generation902fddb9-e9c1-4004-bf4c-dba4d51037c7

openFDA export observedJul 14, 2026

RxNorm release07/06/2026

Methodology2026-07-full-catalog-v1

A shared RxCUI does not prove interchangeability. Products mapped to the same concept are not thereby equivalent or substitutable — equivalence is a separate, product-level determination.
Listing here does not establish approval or coverage. Appearing in this snapshot is a data observation, not an FDA approval status or a payer coverage decision.
Missing data never means zero. A silent dataset (no price, no billing code, no utilization) means no observation — not that the real-world value is zero.
Counts describe the mapping footprint. Product, package, and labeler counts are the FDA-listed mapping footprint in this snapshot — not sales, inventory, availability, or market share.

This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.

Machine-readable JSON

Reference information about drug-concept identifiers and public regulatory data — not medical advice. Talk to your pharmacist or prescriber about your own medication.