What is NDC 51655-945?

51655-945 is the product NDC for Allopurinol, Allopurinol 100 mg/1 tablet, listed with the FDA by Northwind Health Company, LLC. It has 2 package NDCs, shown above in 10- and 11-digit form.

Northwind Health Company, LLC, NDC labeler code 51655. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.

What other NDCs exist for Allopurinol?

165 other product NDCs are listed under this name.

Is there a related HCPCS / J-code?

Not in Med-Code's curated HCPCS directory.

Allopurinol NDC 51655-945 | National Drug Code

NDC codes

FDA NDC Directory

Product NDC (as listed)51655-945Labeler and product segments. Claims need a package NDC.

Product NDC at billing width51655-0945Add 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
51655-945-26	51655094526	90 TABLET in 1 BOTTLE, PLASTIC (51655-945-26)Marketed from Jan 26, 2023
51655-945-52	51655094552	30 TABLET in 1 BOTTLE, PLASTIC (51655-945-52)Marketed from Apr 13, 2022

How the 11-digit form is made: The product segment has 3 digits, so one leading zero is added to it (5-3-2 → 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): Allopurinol
Generic name (nonproprietary): allopurinol
Active ingredients: Allopurinol — 100 mg/1
Dosage form: Tablet
Route: Oral
Labeler: Northwind Health Company, LLCNDC labeler code 51655
Product type: Prescription drug
Marketing category: ANDA — Abbreviated New Drug Application (generic)Application ANDA 204467
Marketing start: Apr 13, 2022
Marketing end: Oct 31, 2029
Other FDA classes: Xanthine Oxidase Inhibitors (Mechanism)
Identifiers: Product ID 51655-945_497e2a20-acb1-dee1-e063-6394a90ac5cdSPL ID 497e2a20-acb1-dee1-e063-6394a90ac5cdSPL set ID df754efc-4b73-a0ab-e053-2a95a90a6133RxCUI 197319UNII 63CZ7GJN5I
Pharmacologic class: Xanthine Oxidase Inhibitor

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

N451655094526 followed by a unit qualifier and the quantity

Package 51655-0945-26. 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 Jan 1, 2026.

Indications (excerpt from the label)

Allopurinol Tablets are indicated for: The management of adults with signs and symptoms of primary or secondary gout (acute attacks, tophi, joint destruction, uric acid lithiasis, and/or nephropathy)� The management of adult and pediatric patients with leukemia, lymphoma and solid tumor malignancies who are receiving cancer therapy which causes elevations of serum and urinary uric acid levels The management of adult patients with recurrent calcium oxalate calculi whose daily uric acid excretion exceeds 800 mg/day in male patients and 750 mg/day in female patients, despite lifestyle changes (such as reduction of dietary sodium, non-dairy animal protein, oxylate rich foods, refined sugars and …

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 51655-945

What is NDC 51655-945?: 51655-945 is the product NDC for Allopurinol, Allopurinol 100 mg/1 tablet, listed with the FDA by Northwind Health Company, LLC. It has 2 package NDCs, shown above in 10- and 11-digit form.
What drug is associated with this NDC?: Allopurinol.
What is the active ingredient?: Allopurinol.
Who is the labeler?: Northwind Health Company, LLC, NDC labeler code 51655. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Allopurinol?: 165 other product NDCs are listed under this name. See all Allopurinol 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 Allopurinol NDCs
Product	Strength	Form · route	Labeler	Product NDC	Package NDCs (11-digit)
Allopurinol	Allopurinol 300 mg/1	TabletOral	Cardinal Health 107, LLC	55154-0282	55154-0282-00
Allopurinol	Allopurinol 300 mg/1	TabletOral	REMEDYREPACK INC.	70518-4693	70518-4693-00
Allopurinol	Allopurinol 100 mg/1	TabletOral	Safecor Health, LLC	48433-002	48433-0002-20
Allopurinol	Allopurinol 300 mg/1	TabletOral	Safecor Health, LLC	48433-003	48433-0003-20
Allopurinol	Allopurinol 300 mg/1	TabletOral	Coupler LLC	67046-1658	67046-1658-03
Allopurinol	Allopurinol 300 mg/1	TabletOral	REMEDYREPACK INC.	70518-4556	70518-4556-00
Allopurinol	Allopurinol 300 mg/1	TabletOral	Northwind Health Company, LLC	82868-099	82868-0099-3082868-0099-90
Allopurinol	Allopurinol 100 mg/1	TabletOral	Aphena Pharma Solutions - Tennessee, LLC	53401-019	53401-0019-6053401-0019-80
Allopurinol	Allopurinol 300 mg/1	TabletOral	Aphena Pharma Solutions - Tennessee, LLC	53401-025	53401-0025-60
Allopurinol	Allopurinol 100 mg/1	TabletOral	XLCare Pharmaceuticals Inc.	72865-303	72865-0303-0172865-0303-0572865-0303-10+1 more

All 166 Allopurinol NDCs

Other NDCs under ANDA 204467

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

FDA NDC Directory listings under ANDA 204467
Product	Strength	Form · route	Labeler	Product NDC
Allopurinol	Allopurinol 300 mg/1	TabletOral	St. Mary's Medical Park Pharmacy	60760-989
Allopurinol	Allopurinol 300 mg/1	TabletOral	Coupler LLC	67046-1658
Allopurinol	Allopurinol 100 mg/1	TabletOral	Redpharm Drug	67296-1897
Allopurinol	Allopurinol 100 mg/1	TabletOral	NorthStar RxLLC	16714-576
Allopurinol	Allopurinol 300 mg/1	TabletOral	NorthStar RxLLC	16714-577
Allopurinol	Allopurinol 300 mg/1	TabletOral	A-S Medication Solutions	50090-6968
Allopurinol	Allopurinol 300 mg/1	TabletOral	REMEDYREPACK INC.	70518-4693
Allopurinol	Allopurinol 100 mg/1	TabletOral	Bryant Ranch Prepack	71335-2347
Allopurinol	Allopurinol 100 mg/1	TabletOral	A-S Medication Solutions	50090-6715
Allopurinol	Allopurinol 300 mg/1	TabletOral	NuCare Pharmaceuticals,Inc.	68071-3605
Allopurinol	Allopurinol 100 mg/1	TabletOral	A-S Medication Solutions	50090-6716
Allopurinol	Allopurinol 100 mg/1	TabletOral	NuCare Pharmaceuticals,Inc.	68071-3871
Allopurinol	Allopurinol 300 mg/1	TabletOral	Direct_Rx	72189-417
Allopurinol	Allopurinol 100 mg/1	TabletOral	Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.	23155-693
Allopurinol	Allopurinol 300 mg/1	TabletOral	ST. MARY'S MEDICAL PARK PHARMACY	60760-722
Allopurinol	Allopurinol 300 mg/1	TabletOral	Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.	23155-694
Allopurinol	Allopurinol 300 mg/1	TabletOral	Bryant Ranch Prepack	71335-3154
Allopurinol	Allopurinol 100 mg/1	TabletOral	Bryant Ranch Prepack	71335-2416
Allopurinol	Allopurinol 100 mg/1	TabletOral	Indoco Remedies Limited	14445-170
Allopurinol	Allopurinol 300 mg/1	TabletOral	Indoco Remedies Limited	14445-171

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