What is NDC 70518-2531?

70518-2531 is the product NDC for Macrobid, Nitrofurantoin 25 mg/1; Nitrofurantoin monohydrate 75 mg/1 capsule, listed with the FDA by REMEDYREPACK INC.. It has 1 package NDC, shown above in 10- and 11-digit form.

What drug is associated with this NDC?

Macrobid (Nitrofurantoin Monohydrate/Macrocrystalline).

What is the active ingredient?

Nitrofurantoin, Nitrofurantoin monohydrate.

REMEDYREPACK INC., NDC labeler code 70518. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.

What other NDCs exist for Macrobid?

1 other product NDC are listed under this name.

Is there a related HCPCS / J-code?

Not in Med-Code's curated HCPCS directory.

Macrobid NDC 70518-2531 | National Drug Code

NDC codes

FDA NDC Directory

Product NDC (as listed)70518-2531Labeler and product segments. Claims need a package NDC.

Product NDC at billing width70518-2531Add the package segment from the table below.

Package NDCs as listed with the FDA, and the 11-digit 5-4-2 form used on claims. The highlighted digit is the added leading zero.
Package NDC	11-digit (billing)	Package	Copy
70518-2531-0	7051825310070518253100	10 CAPSULE in 1 BOTTLE, PLASTIC (70518-2531-0)Marketed from Jan 8, 2020

How the 11-digit form is made: The package segment has 1 digit, so one leading zero is added to it (5-4-1 → 5-4-2). Formatting the NDC does not by itself make it billable — the product, package and quantity must match what was dispensed or administered, and payer rules apply. Conversion rules

Product information

Brand name (proprietary): Macrobid
Generic name (nonproprietary): nitrofurantoin monohydrate/macrocrystalline
Active ingredients: Nitrofurantoin — 25 mg/1Nitrofurantoin monohydrate — 75 mg/1
Dosage form: Capsule
Route: Oral
Labeler: REMEDYREPACK INC.NDC labeler code 70518
Product type: Prescription drug
Marketing category: NDA — New Drug ApplicationApplication NDA 020064
Marketing start: Jan 8, 2020
Listing expires: Dec 31, 2027
Other FDA classes: Nitrofurans (Chemical structure)Nitrofurans (Chemical structure)
Identifiers: Product ID 70518-2531_4a65bc05-7206-c088-e063-6294a90a9a3dSPL ID 4a65bc05-7206-c088-e063-6294a90a9a3dSPL set ID 28bc9ec9-b8db-4ece-a14a-8bcf618cbf7eRxCUI 539712, 1648755UNII 927AH8112L, E1QI2CQQ1I
Pharmacologic class: Nitrofuran Antibacterial

Billing references

What Med-Code can say about coding this product, and where each statement comes from. Nothing here is inferred from the name alone.

HCPCS codeNo match

No HCPCS code in Med-Code's directory. Oral products like this are usually dispensed by a pharmacy and billed by NDC.

NDC on a medical claim

N470518253100 followed by a unit qualifier and the quantity

Package 70518-2531-00. Unit qualifiers: F2 (international unit), GR (gram), ME (milligram), ML (milliliter), UN (unit (each)). The qualifier and quantity depend on what was given. About the N4 qualifier

Product label

Current FDA label (SPL), effective Feb 9, 2026.

Indications (excerpt from the label)

INDICATIONS AND USAGE Macrobid is 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 Macrobid and other antibacterial drugs, Macrobid 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 th…

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 70518-2531

What is NDC 70518-2531?: 70518-2531 is the product NDC for Macrobid, Nitrofurantoin 25 mg/1; Nitrofurantoin monohydrate 75 mg/1 capsule, listed with the FDA by REMEDYREPACK INC.. It has 1 package NDC, shown above in 10- and 11-digit form.
What drug is associated with this NDC?: Macrobid (Nitrofurantoin Monohydrate/Macrocrystalline).
What is the active ingredient?: Nitrofurantoin, Nitrofurantoin monohydrate.
Who is the labeler?: REMEDYREPACK INC., NDC labeler code 70518. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Macrobid?: 1 other product NDC are listed under this name. See all Macrobid NDCs.
Is there a related HCPCS / J-code?: Not in Med-Code's curated HCPCS directory. See Billing references above.

Other finished products listed under the same name: strengths, forms and labelers.

Other Macrobid NDCs
Product	Strength	Form · route	Labeler	Product NDC	Package NDCs (11-digit)
Macrobidnitrofurantoin monohydrate/macrocrystalline	Nitrofurantoin 25 mg/1; Nitrofurantoin monohydrate 75 mg/1	CapsuleOral	Almatica Pharma LLC	52427-285	52427-0285-01

Other NDCs under NDA 020064

Products listed under the same FDA application: other strengths and forms, and repackagers who relabel the same product.

FDA NDC Directory listings under NDA 020064
Product	Strength	Form · route	Labeler	Product NDC
Macrobidnitrofurantoin monohydrate/macrocrystalline	Nitrofurantoin 25 mg/1; Nitrofurantoin monohydrate 75 mg/1	CapsuleOral	Almatica Pharma LLC	52427-285
Nitrofurantoin Mononitrofurantoin monohydrate	Nitrofurantoin monohydrate 75 mg/1; Nitrofurantoin 25 mg/1	CapsuleOral	PharmPak, Inc.	54348-849
Nitrofurantoin Monohydrate Macrocrystallinenitrofurantoin monohydrate	Nitrofurantoin 25 mg/1; Nitrofurantoin monohydrate 75 mg/1	CapsuleOral	Direct_Rx	61919-021
Nitrofurantoin Monohydrate/ Macrocrystallinenitrofurantoin monohydrate/macrocrystalline	Nitrofurantoin 25 mg/1; Nitrofurantoin monohydrate 75 mg/1	CapsuleOral	Alvogen Inc.	47781-303
Nitrofurantoin Monohydrate/ Macrocrystallinenitrofurantoin monohydrate/macrocrystalline	Nitrofurantoin 25 mg/1; Nitrofurantoin monohydrate 75 mg/1	CapsuleOral	Proficient Rx LP	63187-263
Nitrofurantoin Monohydrate/ Macrocrystallinenitrofurantoin monohydrate/macrocrystalline	Nitrofurantoin 25 mg/1; Nitrofurantoin monohydrate 75 mg/1	CapsuleOral	REMEDYREPACK INC.	70518-0265