Home › NDC Lookup › Ingredients › Nitrofurantoin Monohydrate › 61919-0021-10

NITROFURANTOIN MONOHYDRATE MACROCRYSTALLINE 25 mg; 75 mg Capsule, 10-count

by Direct_Rx · 10 CAPSULE in 1 BOTTLE (61919-021-10)

NDC 61919-0021-10

🏷️ FDA NDC (as labeled) 61919-021-10 billing pads the product segment with a zero

This package

Contains10-count Pack sizes4 compare ↓

Also comes in: 2 capsules 61919-0021-02 14 capsules 61919-0021-14 20 capsules 61919-0021-20

Rx only Brand On market Non-controlled

🗂️ Data synced Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm

📋 All sources & update times →

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

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

🆔 Identity & classification

FDA NDC (as labeled) 61919-021-10

Product NDC 61919-021

11-digit billing NDC 61919002110

NCPDP billing unit EA — each (per item)

RxCUI 1648755

UNII 927AH8112L, E1QI2CQQ1I

Application # NDA020064

SPL Set ID 8d2e456a-ffb2-3f1e-e053-2995a90a22df

Established class (EPC) Nitrofuran Antibacterial

Chemical class Nitrofurans

DEA schedule Non-controlled

Marketing category NDA

Marketing status On market

FDA listing status Listed (active directory)

Marketing start 2019-07-08

Route ORAL

Dosage form CAPSULE

Substance NITROFURANTOIN; NITROFURANTOIN MONOHYDRATE

GPI-14 16800050150120

GPI class Nitrofurantoin Monohyd Macro

GCN Seq No 016598

GCN 49001

HICL code 006322

Ingredient (HICL) Nitrofurantoin Monohyd/M-Cryst

HIC1 code W

Therapeutic class — broad (HIC1) Anti-Infecting Agents

HIC2 code W2

Therapeutic class — intermediate (HIC2) Antibacterials

HIC3 code W2F

Therapeutic class — specific (HIC3) Nitrofuran Derivatives Antibacterial Agents

AHFS code 08:36.00.00

AHFS class Urinary Anti-Infectives

FDB label name NITROFURANTOIN MONO-MCR 100 MG

FDB brand name Nitrofurantoin Mono-Macro

Legend status F — Federal legend — prescription drug or device

TE code (Orange Book) AB · RLD · RS

Why two NDCs? The FDA registers this code as 61919-021-10 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 61919-0021-10. Same drug, same package — only the format differs.

Where does this data come from?

Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

🏷️ RxNorm drug class

This medicine belongs to the Nitrofuran Antibacterial class.

Pharmacologic class Nitrofuran Antibacterial

Drug family (ATC) Nitrofuran derivatives

Where does this data come from?

Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

🏭 Manufacturer & labeler

LabelerDirect_Rx

Application holderALMATICA PHARMA LLC

FDA applicationNDA020064 (NDA)

Labeler code61919

First marketedJul 2019

Product typeHuman Prescription Drug

Portfolio351 products on file

🔎 All NDCs from Direct_Rx

The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).

Where does this data come from?

Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

🩺 Clinical

Label name NITROFURANTOIN MONO-MCR 100 MG Ingredient Nitrofurantoin Monohyd/M-Cryst

📖 What it is MedlinePlus · NLM

Nitrofurantoin is used to treat urinary tract infections. Nitrofurantoin is in a class of medications called antibiotics. It works by killing bacteria that cause infection. Antibiotics such as nitrofurantoin will not work for colds, flu, or other viral infections. Using antibiotics when they are not needed increases your risk of getting an infection later that resists antibiotic treatment.

Read the full MedlinePlus article ↗

📗 Our plain-language guide HelloPharmacist

Nitrofurantoin is an antibiotic specifically for urinary tract infections — think bladder infections, not kidney infections. It works by concentrating in your urine where it kills...
What exactly is nitrofurantoin used for?
Yes, every time. Taking nitrofurantoin with food isn't just about avoiding an upset stomach — food actually helps your body absorb more of the medication, so it works better. Even...
Do I really need to take it with food every single time?

📖 Read our full Nitrofurantoin guide →

Patient education

📘 MedlinePlus patient leaflet ↗

Supplement & herbal interactions

🌿 Drug–supplement interaction checker →

Nutrient depletion considerations

Nitrofurantoin may be associated with lower levels of 7 nutrients — worth a chat with your pharmacist, not a cause for alarm.

BIOTIN Insignificant Depletion FOLIC ACID Insignificant Depletion RIBOFLAVIN Insignificant Depletion THIAMINE Insignificant Depletion VITAMIN B12 Insignificant Depletion +2 more

🧪 Full Nitrofurantoin nutrient depletion report →

An association is not a deficiency. Educational only — don't start or stop anything without professional guidance.

Where does this data come from?

Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

💊 What it looks like

Color yellow / black

ShapeCapsule

ImprintMacrobid;52427285

Size2 mm

ScoringNot scored

One label can cover several strengths, so colors may be combined — always confirm a loose pill against the dispensed prescription label or a pharmacist.

Where does this data come from?

Physical description (imprint, shape, color, scoring, coating) from this product’s FDA Structured Product Labeling (SPL), mirrored from DailyMed / openFDA.

🧪 Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.

UNII Z135WT9208
Carbomer is a synthetic polymer that forms a thick, gel-like consistency. It's used in medicines as a thickener and stabilizer to improve texture and keep ingredients evenly mixed throughout the product.
UNII 35SW5USQ3G
A synthetic yellow dye used to color medicines. It helps make tablets, capsules, and liquids visually distinct so patients can easily identify their medication.
UNII H3R47K3TBD
FD&C Blue No. 1 is a synthetic blue dye approved for use in foods and medicines. It serves as a colorant to give the medication its distinctive appearance and help with product identification.
UNII WZB9127XOA
A synthetic red dye used to color medications and make them easier to identify. It serves as a colorant in tablets, capsules, and liquid formulations.
UNII 2G86QN327L
Gelatin is a protein derived from animal collagen, commonly used in medicines as a gelling agent and capsule material. It helps create soft or hard capsule shells that hold and release medication, and can also thicken liquid formulations.
UNII J2B2A4N98G
Lactose is a natural sugar derived from milk. In medications, it serves as a filler and binder to add bulk and help hold tablet or capsule ingredients together during manufacturing.
UNII 70097M6I30
Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
UNII FZ989GH94E
Povidone is a synthetic polymer made from a plastic-like material. It acts as a binder to hold tablet ingredients together and as a disintegrant to help the tablet break apart in your stomach so the medicine can be absorbed.
UNII O8232NY3SJ
A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.
UNII C151H8M554
A natural sugar derived from sugar cane or sugar beets. It's used as a sweetener, filler, and binder to improve taste, add bulk, and help hold tablet or capsule ingredients together.
UNII 7SEV7J4R1U
A powder made from a naturally occurring mineral. In medicines, talc works as a glidant and anti-caking agent, helping tablets and capsules flow smoothly during manufacturing and preventing clumping.
UNII 15FIX9V2JP
Titanium dioxide is a bright white mineral powder commonly used as a colorant and opacifying agent. It makes pills and tablets white or lighter in color and helps make coatings non-transparent.

12 inactive ingredients listed in the exact product block matched to this NDC.

Where does this data come from?

Data sourced from official FDA Structured Product Labeling (SPL) via DailyMed — ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?

No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.

Why might an inactive ingredient be missing?

Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.

Can inactive ingredients matter?

Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

💲 Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price system	Per each	Per package
Retail pharmacies payNADAC · weekly	Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo	No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · quarterly	No Part D plan price is available for this NDC in our data.

ℹ️

No price is published for this exact package yet. CMS surveys NADAC per package size, so a different pack of the same drug often has one.

Try another pack size: 2 capsules 14 capsules 20 capsules

Where does this data come from?

NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

🔁 Therapeutic equivalents

Product	Labeler	Pack	NADAC/unit	TE	Status	Price vs. this
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 00185-0122-01	Sandoz	100 capsules	$0.298	AB	Availability likely	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 00904-7571-61	Major	100 capsules	$0.298	AB	Availability likely	—
Nitrofurantoin 25 mg/1; 75 mg 13811-0719-10	Trigen	100 capsules	$0.298	AB	Availability likely	—
Nitrofurantoin 100 mg 42571-0393-01	Micro	100 capsules	$0.298	AB	Availability likely	—
Nitrofurantoin Monohydrate/ Macrocrystalline 25 mg/1; 75 mg 47781-0303-01	Alvogen	100 capsules	$0.298	AB	Availability likely	—
NITROFURANTOIN (monohydrate/macrocrystals) 75 mg/1; 25 mg 59746-0762-01	Jubilant	100 capsules	$0.298	AB	Availability likely	—
nitrofurantoin (monohydrate/macrocrystals) 25 mg/1; 75 mg 65862-0929-01	Aurobindo	100 capsules	$0.298	—	Availability likely	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 68001-0606-00	BluePoint	100 capsules	$0.298	AB	Availability likely	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 70756-0404-11	Lifestar	100 capsules	$0.298	AB	Availability likely	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 72603-0196-01	NorthStar	100 capsules	$0.298	AB	Availability likely	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 65162-0478-10	Amneal	100 capsules	$0.518	—	FDA listed	—
NITROFURANTOIN (monohydrate/macrocrystals) 75 mg/1; 25 mg 00615-8531-10	NCS	10 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 42708-0178-28	QPharma,	28 capsules	—	AB	FDA listed	—
NITROFURANTOIN (monohydrate/macrocrystals) 75 mg/1; 25 mg 42708-0184-28	QPharma,	28 capsules	—	AB	FDA listed	—
Nitrofurantoin 75 mg/1; 25 mg 50090-6664-00	A-S	14 capsules	—	AB	FDA listed	—
Nitrofurantoin 75 mg/1; 25 mg 50090-6750-01	A-S	10 capsules	—	AB	FDA listed	—
Macrobid 25 mg/1; 75 mg 52427-0285-01	Almatica	100 capsules	—	AB	FDA listed	—
Nitrofurantoin Mono 75 mg/1; 25 mg 54348-0849-06	PharmPak,	6 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 60760-0194-14	St.	14 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 60760-0853-14	St.	14 capsules	—	AB	FDA listed	—
Nitrofurantoin Monohydrate Macrocrystalline 25 mg/1; 75 mgthis 61919-0021-10	Direct_Rx	10 capsules	—	AB	FDA listed	—
Nitrofurantoin Monohydrate/ Macrocrystalline 25 mg/1; 75 mg 63187-0263-10	Proficient	10 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 63187-0995-10	Proficient	10 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 63629-1748-00	Bryant	6 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 63629-2464-01	Bryant	100 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 67046-1198-03	Coupler	30 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 67046-1271-03	Coupler	30 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 67296-1442-01	Redpharm	10 capsules	—	AB	Discontinued	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 67296-2105-01	Redpharm	14 capsules	—	AB	FDA listed	—
NITROFURANTOIN (monohydrate/macrocrystals) 75 mg/1; 25 mg 67296-2180-01	Redpharm	10 capsules	—	AB	FDA listed	—
Nitrofurantoin 75 mg/1; 25 mg 68071-3569-02	NuCare	20 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 68071-3593-02	NuCare	2 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 68071-4367-02	NuCare	20 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 68071-4428-02	NuCare	2 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 68788-8258-00	Preferred	10 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 68788-8571-00	Preferred	10 capsules	—	AB	FDA listed	—
Nitrofurantoin Monohydrate/ Macrocrystalline 25 mg/1; 75 mg 70518-0265-00	REMEDYREPACK	30 capsules	—	AB	Discontinued	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 70518-1087-02	REMEDYREPACK	30 capsules	—	AB	Discontinued	—
Macrobid 25 mg/1; 75 mg 70518-2531-00	REMEDYREPACK	10 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 70518-3717-00	REMEDYREPACK	14 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 70518-4026-00	REMEDYREPACK	10 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 70518-4358-00	REMEDYREPACK	30 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 71205-0852-00	Proficient	100 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 71335-2255-01	Bryant	40 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 71335-2320-00	Bryant	6 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 71335-2377-00	Bryant	6 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 71335-2914-01	Bryant	100 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 72162-1262-01	Bryant	100 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 72162-2615-01	Bryant	100 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 72189-0179-10	Directrx	10 capsules	—	AB	FDA listed	—
Nitrofurantoin Monohydrate/Macrocrystal 75 mg/1; 25 mg 72189-0395-14	Direct_Rx	14 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 72789-0234-10	PD-Rx	10 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 72789-0242-06	PD-Rx	6 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 72789-0386-06	PD-Rx	6 capsules	—	AB	FDA listed	—
Nitrofurantoin 25 mg/1; 75 mg 72789-0387-10	PD-Rx	10 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 76420-0195-01	Asclemed	100 capsules	—	AB	FDA listed	—
NITROFURANTOIN (monohydrate/macrocrystals) 75 mg/1; 25 mg 76420-0884-00	Asclemed	1000 capsules	—	AB	FDA listed	—
Nitrofurantoin (Monohydrate/Macrocrystals) 25 mg/1; 75 mg 82619-0147-01	Creekwood	100 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 82804-0115-10	Proficient	10 capsules	—	AB	FDA listed	—
Nitrofurantoin (monohydrate/macrocrystals) 75 mg/1; 25 mg 82868-0012-10	Northwind	10 capsules	—	AB	FDA listed	—
NITROFURANTOIN (monohydrate/macrocrystals) 75 mg/1; 25 mg 82868-0065-10	Northwind	10 capsules	—	AB	FDA listed	—

About this product: this is the brand-name version. Some generic versions are approved by the FDA, but we could not confirm current pharmacy availability from our pricing/market data.

Where does this data come from?

Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

⏳ Availability & generic status

🏛️

2019

On the market since

Jul 2019

📍

2026

Currently FDA-listed

7 years listed

🔒

Generic approved (availability unconfirmed)

see note

🔒Generic approved by FDA, but pharmacy availability is not confirmed

The FDA lists approved generic versions of this medicine, but that does not always mean a pharmacy can get one today. Patent rules, launch agreements, supply and pricing can affect when generics actually arrive.

Where does this data come from?

Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

🔬 Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for NITROFURANTOIN MONOHYDRATE — the ingredient across all brands.

Top reported reactions

Urinary Tract Infection2,157

Nausea1,787

Fatigue1,778

Headache1,666

Pain1,480

Dyspnoea1,412

Diarrhoea1,258

Age at onset

Neonate59

Infant20

Child21

Adolescent22

Adult1,738

Elderly1,463

Reporter sex

Male · 14%

Female · 85%

Unknown · 0%

Serious outcomes

Hospitalization7,530

Death1,359

Life-threatening1,092

Disabling1,051

Reports over time (by year) — tap or hover for the count & year

Most recent year is provisional (FAERS lags ~3 months).

Where does this data come from?

Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

📦 Packaging — all sizes for this product

Package NDC	Description	Marketing start	Status
61919-0021-02	2 CAPSULE in 1 BOTTLE (61919-021-02)	2019-07-08	Active
61919-0021-14	14 CAPSULE in 1 BOTTLE (61919-021-14)	2019-07-08	Active
61919-0021-20	20 CAPSULE in 1 BOTTLE (61919-021-20)	2017-02-14	Inactivated by FDA
61919-0021-10 You're viewing this	10 CAPSULE in 1 BOTTLE (61919-021-10)	2019-07-08	Active

You're viewing one of 4 pack sizes for this product.

Pack size FAQ

What quantity is in NDC 61919-0021-10?

NDC 61919-0021-10 is a 10-count package — 10 capsule in 1 bottle.

What is the difference between NDC 61919-0021-10 and NDC 61919-0021-02?

Both are NITROFURANTOIN MONOHYDRATE MACROCRYSTALLINE 25 mg; 75 mg Capsule — the drug itself is identical. NDC 61919-0021-10 is the 10-count package, while NDC 61919-0021-02 is the 2 capsules package.

What NDC number is used to bill for this package of NITROFURANTOIN MONOHYDRATE MACROCRYSTALLINE 25 mg; 75 mg Capsule?

Bill NDC 61919-0021-10 — the 11-digit billing format is 61919002110. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

🧭 About this NDC listing & data coverage

Finished prescription product

What data is (and isn’t) available for this NDC — tap to expand

NDC identity (package / product / labeler codes)	✓ Available
Labeler	✓ Available
Product & package description	✓ Available
Marketing category & status	✓ Available
Active ingredient / dosage form / route	✓ Available
FDA label (SPL via DailyMed)	✓ Available
Package photos	✓ Available
Inactive ingredients (structured)	✓ Available
NADAC pharmacy acquisition price (CMS)	— Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data	✓ Available
HCPCS J-code billing crosswalk	— Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD)	— Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.

“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Why is there no price listed?

The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.

Is the NDC printed on the package the same as the 11-digit billing NDC?

Yes, they identify this exact package in different formats. The FDA registers it as 61919-021-10, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 61919-0021-10, written without dashes as 61919002110. The Identity section at the top of this page lists every form of this code.

What do the three segments of this NDC mean?

In 61919-0021-10, the first segment (61919) is the labeler code FDA assigned to Direct_Rx; the middle segment (0021) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (10) identifies this exact package size and type. Together they name one specific package of one specific product.

Is this package still being marketed?

Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Direct_Rx. Listing status can change — the directory data on this page refreshes weekly.

Does this product come in other package sizes?

Yes — the FDA directory lists 3 other package presentations of this same product, including 2 capsules (61919-0021-02), 14 capsules (61919-0021-14), 20 capsules (61919-0021-20). Each has its own NDC and its own page — see the package list near the top of this page.

Who lists this product with the FDA?

Direct_Rx is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.

Do I need a prescription for this product?

This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.

This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.

Where does this data come from?

Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.

📄 Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Jump with a chip, search within the label, or expand everything.

🎯 Indications and Usage ⏱️ Dosage and Administration ⛔ Contraindications ⚠️ Warnings 🤒 Adverse Reactions 🆘 Overdosage 🧬 Clinical Pharmacology 📦 How Supplied / Storage and Handling 📋 Description

🎯 Indications and Usage ~1 min read ▾

Nitrofurantoin monohydrate/macrocrystals capsules are indicated only for the treatment of acute uncomplicated urinary tract infections (acute cystitis) caused by susceptible strains of Escherichia coli or Staphylococcus saprophyticus. Nitrofurantoin is not indicated for the treatment of pyelonephritis or perinephric abscesses. To reduce the development of drug-resistant bacteria and maintain the effectiveness of nitrofurantoin monohydrate/macrocrystals capsules and other antibacterial drugs, nitrofurantoin monohydrate/macrocrystals capsules should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria.

When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy. Nitrofurantoins lack the broader tissue distribution of other therapeutic agents approved for urinary tract infections.

Consequently, many patients who are treated with nitrofurantoin monohydrate/macrocrystals capsules are predisposed to persistence or reappearance of bacteriuria. (See CLINICAL STUDIES.) Urine specimens for culture and susceptibility testing should be obtained before and after completion of therapy. If persistence or reappearance of bacteriuria occurs after treatment with nitrofurantoin monohydrate/macrocrystals capsules, other therapeutic agents with broader tissue distribution should be selected.

In considering the use of nitrofurantoin monohydrate/macrocrystals capsules, lower eradication rates should be balanced against the increased potential for systemic toxicity and for the development of antimicrobial resistance when agents with broader tissue distribution are utilized.

⏱️ Dosage and Administration 25 words ▾

Nitrofurantoin monohydrate/macrocrystals capsules should be taken with food. Adults and Pediatric Patients Over 12 Years: One 100 mg capsule every 12 hours for seven days.

⛔ Contraindications 130 words ▾

Anuria, oliguria, or significant impairment of renal function (creatinine clearance under 60 mL per minute or clinically significant elevated serum creatinine) are contraindications. Treatment of this type of patient carries an increased risk of toxicity because of impaired excretion of the drug. Because of the possibility of hemolytic anemia due to immature erythrocyte enzyme systems (glutathione instability), the drug is contraindicated in pregnant patients at term (38 to 42 weeks gestation), during labor and delivery, or when the onset of labor is imminent.

For the same reason, the drug is contraindicated in neonates under one month of age. Nitrofurantoin monohydrate/macrocrystals capsules are contraindicated in patients with a previous history of cholestatic jaundice/hepatic dysfunction associated with nitrofurantoin. Nitrofurantoin monohydrate/macrocrystals capsules are also contraindicated in those patients with known hypersensitivity to nitrofurantoin.

⚠️ Warnings ~2 min read ▾

Pulmonary reactions: ACUTE, SUBACUTE, OR CHRONIC PULMONARY REACTIONS HAVE BEEN OBSERVED IN PATIENTS TREATED WITH NITROFURANTOIN. IF THESE REACTIONS OCCUR, NITROFURANTOIN MONOHYDRATE/MACROCRYSTALS CAPSULES SHOULD BE DISCONTINUED AND APPROPRIATE MEASURES TAKEN. REPORTS HAVE CITED PULMONARY REACTIONS AS A CONTRIBUTING CAUSE OF DEATH.

CHRONIC PULMONARY REACTIONS (DIFFUSE INTERSTITIAL PNEUMONITIS OR PULMONARY FIBROSIS, OR BOTH) CAN DEVELOP INSIDIOUSLY. THESE REACTIONS OCCUR RARELY AND GENERALLY IN PATIENTS RECEIVING THERAPY FOR SIX MONTHS OR LONGER. CLOSE MONITORING OF THE PULMONARY CONDITION OF PATIENTS RECEIVING LONG-TERM THERAPY IS WARRANTED AND REQUIRES THAT THE BENEFITS OF THERAPY BE WEIGHED AGAINST POTENTIAL RISKS.

(SEE RESPIRATORY REACTIONS.) Hepatotoxicity: Hepatic reactions, including hepatitis, cholestatic jaundice, chronic active hepatitis, and hepatic necrosis, occur rarely. Fatalities have been reported. The onset of chronic active hepatitis may be insidious, and patients should be monitored periodically for changes in biochemical tests that would indicate liver injury.

If hepatitis occurs, the drug should be withdrawn immediately and appropriate measures should be taken. Neuropathy: Peripheral neuropathy, which may become severe or irreversible, has occurred. Fatalities have been reported.

Conditions such as renal impairment (creatinine clearance under 60 mL per minute or clinically significant elevated serum creatinine), anemia, diabetes mellitus, electrolyte imbalance, vitamin B deficiency, and debilitating disease may enhance the occurrence of peripheral neuropathy. Patients receiving long-term therapy should be monitored periodically for changes in renal function. Optic neuritis has been reported rarely in postmarketing experience with nitrofurantoin formulations.

Hemolytic anemia: Cases of hemolytic anemia of the primaquine-sensitivity type have been induced by nitrofurantoin. Hemolysis appears to be linked to a glucose-6-phosphate dehydrogenase deficiency in the red blood cells of the affected patients. This deficiency is found in 10 percent of Blacks and a small percentage of ethnic groups of Mediterranean and Near-Eastern origin.

Hemolysis is an indication for discontinuing nitrofurantoin monohydrate/macrocrystals capsules; hemolysis ceases when the drug is withdrawn. Clostridium difficile-associated diarrhea: Clostridium difficile associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents, including nitrofurantoin, and may range in severity from mild diarrhea to fatal colitis. Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of C. difficile.

C. difficile produces toxins A and B which contribute to the development of CDAD. Hypertoxin producing strains of C. difficile cause increased morbidity and mortality, as these infections can be refractory to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhea following antibiotic use.

Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents. If CDAD is suspected or confirmed, ongoing antibiotic use not directed against C. difficile may need to be discontinued. Appropriate fluid and electrolyte management, protein supplementation, antibiotic treatment of C. difficile, and surgical evaluation should be instituted as clinically indicated.

🤒 Adverse Reactions ~2 min read ▾

In clinical trials of nitrofurantoin monohydrate/macrocrystals capsules, the most frequent clinical adverse events that were reported as possibly or probably drug-related were nausea (8%), headache (6%), and flatulence (1.5%). Additional clinical adverse events reported as possibly or probably drug-related occurred in less than 1% of patients studied and are listed below within each body system in order of decreasing frequency: Gastrointestinal: Diarrhea, dyspepsia, abdominal pain, constipation, emesis Neurologic: Dizziness, drowsiness, amblyopia Respiratory: Acute pulmonary hypersensitivity reaction (see WARNINGS) Allergic: Pruritus, urticaria Dermatologic: Alopecia Miscellaneous: Fever, chills, malaise The following additional clinical adverse events have been reported with the use of nitrofurantoin: Gastrointestinal: Sialadenitis, pancreatitis.

There have been sporadic reports of pseudomembranous colitis with the use of nitrofurantoin. The onset of pseudomembranous colitis symptoms may occur during or after antimicrobial treatment. (See WARNINGS.) Neurologic: Peripheral neuropathy, which may become severe or irreversible, has occurred.

Fatalities have been reported. Conditions such as renal impairment (creatinine clearance under 60 mL per minute or clinically significant elevated serum creatinine), anemia, diabetes mellitus, electrolyte imbalance, vitamin B deficiency, and debilitating diseases may increase the possibility of peripheral neuropathy. (See WARNINGS.) Asthenia, vertigo, and nystagmus also have been reported with the use of nitrofurantoin.

Benign intracranial hypertension (pseudotumor cerebri), confusion, depression, optic neuritis, and psychotic reactions have been reported rarely. Bulging fontanels, as a sign of benign intracranial hypertension in infants, have been reported rarely. Respiratory: CHRONIC, SUBACUTE, OR ACUTE PULMONARY HYPERSENSITIVITY REACTIONS MAY OCCUR WITH THE USE OF NITROFURANTOIN.

CHRONIC PULMONARY REACTIONS GENERALLY OCCUR IN PATIENTS WHO HAVE RECEIVED CONTINUOUS TREATMENT FOR SIX MONTHS OR LONGER. MALAISE, DYSPNEA ON EXERTION, COUGH, AND ALTERED PULMONARY FUNCTION ARE COMMON MANIFESTATIONS WHICH CAN OCCUR INSIDIOUSLY. RADIOLOGIC AND HISTOLOGIC FINDINGS OF DIFFUSE INTERSTITIAL PNEUMONITIS OR FIBROSIS, OR BOTH, ARE ALSO COMMON MANIFESTATIONS OF THE CHRONIC PULMONARY REACTION.

FEVER IS RARELY PROMINENT. THE SEVERITY OF CHRONIC PULMONARY REACTIONS AND THEIR DEGREE OF RESOLUTION APPEAR TO BE RELATED TO THE DURATION OF THERAPY AFTER THE FIRST CLINICAL SIGNS APPEAR. PULMONARY FUNCTION MAY BE IMPAIRED PERMANENTLY, EVEN AFTER CESSATION OF THERAPY.

THE RISK IS GREATER WHEN CHRONIC PULMONARY REACTIONS ARE NOT RECOGNIZED EARLY. In subacute pulmonary reactions, fever and eosinophilia occur less often than in the acute form. Upon cessation of therapy, recovery may require several months.

If the symptoms are not recognized as being drug-related and nitrofurantoin therapy is not stopped, the symptoms may become more severe. Acute pulmonary reactions are commonly manifested by fever, chills, cough, chest pain, dyspnea, pulmonary infiltration with consolidation or pleural effusion on x-ray, and eosinophilia. Acute reactions usually occur within the first week of treatment and are reversible with cessation of therapy.

Resolution often is dramatic. (See WARNINGS.) Changes in EKG (e.g., non-specific ST/T wave changes, bundle branch block) have been reported in association with pulmonary reactions. Cyanosis has been reported rarely.

Hepatic: Hepatic reactions, including hepatitis, cholestatic jaundice, chronic active hepatitis, and hepatic necrosis, occur rarely. (See WARNINGS.) Allergic: Lupus-like syndrome associated with pulmonary reaction to nitrofurantoin has been reported. Also, angioedema; maculopapular, erythematous, or eczematous eruptions; anaphylaxis; arthralgia; myalgia; drug fever; chills; and vasculitis (sometimes associated with pulmonary reactions) have been reported.

Hypersensitivity reactions…

🆘 Overdosage 45 words ▾

Occasional incidents of acute overdosage of nitrofurantoin have not resulted in any specific symptoms other than vomiting. Induction of emesis is recommended. There is no specific antidote, but a high fluid intake should be maintained to promote urinary excretion of the drug. Nitrofurantoin is dialyzable.

🧬 Clinical Pharmacology ~2 min read ▾

Each nitrofurantoin monohydrate/macrocrystals capsule contains two forms of nitrofurantoin. Twenty-five percent is macrocrystalline nitrofurantoin, which has slower dissolution and absorption than nitrofurantoin monohydrate. The remaining 75% is nitrofurantoin monohydrate contained in a powder blend which, upon exposure to gastric and intestinal fluids, forms a gel matrix that releases nitrofurantoin over time.

Based on urinary pharmacokinetic data, the extent and rate of urinary excretion of nitrofurantoin from the 100 mg nitrofurantoin monohydrate/macrocrystals capsule are similar to those of the 50 mg or 100 mg nitrofurantoin macrocrystals capsule. Approximately 20% to 25% of a single dose of nitrofurantoin is recovered from the urine unchanged over 24 hours. Plasma nitrofurantoin concentrations after a single oral dose of the 100 mg nitrofurantoin monohydrate/macrocrystals capsules are low, with peak levels usually less than 1 mcg/mL.

Nitrofurantoin is highly soluble in urine, to which it may impart a brown color. When nitrofurantoin monohydrate/macrocrystals capsules are administered with food, the bioavailability of nitrofurantoin is increased by approximately 40%. MICROBIOLOGY Nitrofurantoin is a nitrofuran antimicrobial agent with activity against certain Gram-positive and Gram-negative bacteria.

Mechanism of Action The mechanism of the antimicrobial action of nitrofurantoin is unusual among antibacterials. Nitrofurantoin is reduced by bacterial flavoproteins to reactive intermediates which inactivate or alter bacterial ribosomal proteins and other macromolecules. As a result of such inactivations, the vital biochemical processes of protein synthesis, aerobic energy metabolism, DNA synthesis, RNA synthesis, and cell wall synthesis are inhibited.

Nitrofurantoin is bactericidal in urine at therapeutic doses. The broad-based nature of this mode of action may explain the lack of acquired bacterial resistance to nitrofurantoin, as the necessary multiple and simultaneous mutations of the target macromolecules would likely be lethal to the bacteria. Interactions with Other Antibiotics Antagonism has been demonstrated in vitro between nitrofurantoin and quinolone antimicrobials.

The clinical significance of this finding is unknown. Development of Resistance Development of resistance to nitrofurantoin has not been a significant problem since its introduction in 1953. Cross-resistance with antibiotics and sulfonamides has not been observed, and transferable resistance is, at most, a very rare phenomenon.

Nitrofurantoin has been shown to be active against most strains of the following bacteria both in vitro and in clinical infections (see INDICATIONS AND USAGE). Aerobic and facultative Gram-positive microorganisms: Staphylococcus saprophyticus Aerobic and facultative Gram-negative microorganisms: Escherichia coli At least 90 percent of the following microorganisms exhibit an in vitro minimum inhibitory concentration (MIC) less than or equal to the susceptible breakpoint for nitrofurantoin. However, the efficacy of nitrofurantoin in treating clinical infections due to these microorganisms has not been established in adequate and well-controlled trials.

Aerobic and facultative Gram-positive microorganisms: Coagulase-negative staphylococci (including Staphylococcus epidermidis) Enterococcus faecalis Staphylococcus aureus Streptococcus agalactiae Group D streptococci Viridans group streptococci Aerobic and facultative Gram-negative microorganisms: Citrobacter amalonaticus Citrobacter diversus Citrobacter freundii Klebsiella oxytoca Klebsiella ozaenae Nitrofurantoin is not active against most strains of Proteus species or Serratia species. It has no activity against Pseudomonas species.

Susceptibility Testing: For specific information regarding susceptibility test interpretive criteria and associated test methods and quality control standards recognized by FDA for this drug, please see: https://www.fda.gov/STIC.

📦 How Supplied / Storage and Handling 42 words ▾

Nitrofurantoin monohydrate/macrocrystals capsules are available as 100 mg opaque black and yellow capsules imprinted “(band) Macrobid (band)” on one half and “52427-285” on the other. bottle of 100 Store at controlled room temperature (59° to 86°F or 15° to 30°C). Rx Only

📋 Description 133 words ▾

Nitrofurantoin is an antibacterial agent specific for urinary tract infections. The nitrofurantoin monohydrate/macrocrystals capsules brand of nitrofurantoin is a hard gelatin capsule shell containing the equivalent of 100 mg of nitrofurantoin in the form of 25 mg of nitrofurantoin macrocrystals and 75 mg of nitrofurantoin monohydrate. The chemical name of nitrofurantoin macrocrystals is 1-[[[5-nitro-2-furanyl]methylene] amino]-2,4-imidazolidinedione.

The chemical structure is the following: [structure-1] Molecular Weight: 238.16 The chemical name of nitrofurantoin monohydrate is 1-[[[5-nitro-2-furanyl]methylene] amino]-2,4- imidazolidinedione monohydrate. The chemical structure is the following: [structure-2] Molecular Weight: 256.17 Inactive Ingredients: Each capsule contains carbomer 934P, corn starch, compressible sugar, D&C Yellow No. 10, edible gray ink, FD&C Blue No.

1, FD&C Red No. 40, gelatin, lactose, magnesium stearate, povidone, talc, and titanium dioxide. FDA approved dissolution method differs from the current USP monograph dissolution methods.

Glossary — plain-language definitions of medical terms used in this label:

contraindicated: Should not be used in that situation, because the risk is considered too high.

in vitro: In a laboratory dish or test tube rather than in a living person or animal; results may not carry over to people.

lupus-like syndrome: A set of symptoms resembling lupus, such as joint pain, rash, and fever, that appears while taking a substance and usually settles after stopping it.

abdominal pain: Pain, cramping, or discomfort felt anywhere in the belly area.

Absorption: How a medicine moves from where it is taken, such as the stomach or gut, into the bloodstream.

alopecia: Loss of hair from the scalp or body.

anaphylaxis: A sudden, severe, whole-body allergic reaction that can cause trouble breathing, swelling, and a drop in blood pressure, needing emergency care.

anemia: A low level of red blood cells or the oxygen-carrying protein inside them, which can cause tiredness, weakness, and paleness.

angioedema: Rapid swelling deep under the skin, often around the eyes, lips, tongue, or throat.

antidote: A treatment that reverses or counteracts the effects of a specific medicine or poison.

antimicrobial resistance: When germs change over time so that the medicines meant to kill them no longer work well.

anuria: Producing little or no urine, which can be a sign of severe kidney problems.

arthralgia: Joint pain.

asthenia: Unusual weakness or lack of physical strength and energy.

bactericidal: Describes a medicine that kills bacteria outright.

Bioavailability: The share of a dose that actually reaches the bloodstream and is able to have an effect.

clearance: How quickly the body removes a medicine from the blood, usually through the liver and kidneys.

Clinical Studies: The label section summarizing the research trials used to show that a medicine works and is acceptably safe.

colitis: Swelling and irritation of the inner lining of the large intestine, or colon.

constipation: Having bowel movements less often than usual, or passing stools that are hard, dry, and difficult to move.

Contraindications: A list of situations or health conditions in which a medicine should not be used because the chance of harm is too high.

creatinine clearance: An estimate of how fast the kidneys filter waste from the blood, often used to choose the right medicine dose.

cyanosis: A bluish color of the skin, lips, or nails caused by too little oxygen in the blood.

depression: A lasting low mood with loss of interest that affects everyday life.

diarrhea: Loose, watery bowel movements that happen more often than normal.

Distribution: How a medicine spreads from the blood into the body's tissues and organs after it is absorbed.

dyspepsia: Discomfort, fullness, or a burning feeling in the upper belly, commonly called indigestion.

dyspnea: The medical word for shortness of breath, or the feeling that you cannot get enough air.

efficacy: How well a treatment works under the controlled conditions of a clinical study.

electrolyte: A mineral in the blood and body fluids, such as sodium, potassium, or calcium, that carries a small electric charge and helps the body work.

emesis: The medical word for vomiting, or bringing up the contents of the stomach through the mouth.

eosinophilia: A higher-than-normal level of eosinophils, a type of white blood cell often linked to allergies or drug reactions.

Excretion: How the body removes a medicine or its leftover pieces, mainly through the urine or stool.

flatulence: Passing gas from the bowel; feeling bloated or gassy.

hemolysis: The breaking apart of red blood cells, which can lower the number of cells available to carry oxygen.

hemolytic anemia: A shortage of red blood cells caused by them breaking apart faster than the body can replace them.

hepatitis: Inflammation of the liver, which can be caused by infections, alcohol, or certain medicines.

hepatotoxicity: Damage to the liver caused by a medicine or other substance.

hypersensitivity: An overreaction of the body's defense system to a substance, causing symptoms such as rash, swelling, or trouble breathing.

hypertension: Blood pressure that stays higher than normal, commonly called high blood pressure.

Indications and Usage: The label section stating which medical conditions the FDA has officially approved the medicine to treat, prevent, or manage.

jaundice: Yellowing of the skin and the whites of the eyes caused by too much bilirubin in the blood.

malaise: A general feeling of being unwell, uneasy, or low on energy, without one clear symptom.

Mechanism of Action: How a medicine produces its effect in the body, described at the level of cells or body chemistry.

Metabolism: How the body chemically changes a medicine, usually in the liver, into other substances.

myalgia: Muscle pain or aching.

nystagmus: Rapid, involuntary back-and-forth movements of the eyes that a person cannot control.

oliguria: Producing much less urine than normal, which is often a sign the kidneys are under stress.

optic neuritis: Swelling and irritation of the nerve that carries signals from the eye to the brain, which can affect vision.

Overdosage: The label section describing what can happen if too much of a medicine is taken and how it may be treated.

pancreatitis: Painful swelling of the pancreas, an organ behind the stomach that helps digest food and control blood sugar.

peripheral neuropathy: Damage to the nerves outside the brain and spinal cord, often causing numbness, tingling, or pain in the hands and feet.

pleural effusion: A buildup of fluid in the space between the lungs and the chest wall.

pneumonitis: Inflammation of the lung tissue that is not caused by an infection and can lead to cough and breathlessness.

pruritus: Itching of the skin.

pseudomembranous colitis: A serious swelling of the large intestine, usually caused by C. difficile bacteria, that leads to severe diarrhea.

pulmonary fibrosis: Scarring and thickening of lung tissue that makes the lungs stiff and breathing harder over time.

refractory: Describing a disease that does not respond to, or improve with, treatment.

renal impairment: Reduced kidney function, meaning the kidneys do not filter waste and fluid from the blood as well as normal.

Rx only: A label marking meaning the medicine can be obtained only with a prescription from a licensed health professional.

serum creatinine: A waste product measured in a blood test; higher levels can mean the kidneys are not filtering as well as normal.

susceptibility testing: A lab test that grows germs from a sample and checks which medicines can stop or kill them.

urticaria: Raised, itchy welts on the skin, commonly called hives.

vertigo: A spinning sensation that makes you feel like you or the room around you is moving.

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

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For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.

NITROFURANTOIN MONOHYDRATE MACROCRYSTALLINE 25 mg; 75 mg Capsule, 10-count

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