What is NDC 51655-368?

51655-368 is the product NDC for Metformin Hydrochloride, Metformin hydrochloride 750 mg/1 tablet, extended release, listed with the FDA by Northwind Health Company, LLC. It has 1 package NDC, 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 Metformin Hydrochloride?

366 other product NDCs are listed under this name.

Is there a related HCPCS / J-code?

Not in Med-Code's curated HCPCS directory.

Metformin Hydrochloride NDC 51655-368

NDC codes

FDA NDC Directory

Product NDC (as listed)51655-368Labeler and product segments. Claims need a package NDC.

Product NDC at billing width51655-0368Add 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
51655-368-52	5165503685251655036852	30 TABLET, EXTENDED RELEASE in 1 BOTTLE, PLASTIC (51655-368-52)Marketed from Jun 4, 2020

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): Metformin Hydrochloride
Generic name (nonproprietary): metformin hydrochloride
Active ingredients: Metformin hydrochloride — 750 mg/1
Dosage form: Tablet, Extended release
Route: Oral
Labeler: Northwind Health Company, LLCNDC labeler code 51655
Product type: Prescription drug
Marketing category: ANDA — Abbreviated New Drug Application (generic)Application ANDA 078321
Marketing start: Jun 4, 2020
Marketing end: Nov 30, 2026
Other FDA classes: Biguanides (Chemical structure)
Identifiers: Product ID 51655-368_48ebae7a-12c6-3ef3-e063-6294a90a0f21SPL ID 48ebae7a-12c6-3ef3-e063-6294a90a0f21SPL set ID ab80521b-5014-cc2a-e053-2a95a90a2003RxCUI 860981UNII 786Z46389E
Pharmacologic class: Biguanide

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

N451655036852 followed by a unit qualifier and the quantity

Package 51655-0368-52. 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. This label includes a boxed warning.

Indications (excerpt from the label)

Metformin hydrochloride extended-release tablets are indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus. Metformin hydrochloride extended-release tablets are a biguanide indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus. ( 1 )

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 51655-368

What is NDC 51655-368?: 51655-368 is the product NDC for Metformin Hydrochloride, Metformin hydrochloride 750 mg/1 tablet, extended release, listed with the FDA by Northwind Health Company, LLC. It has 1 package NDC, shown above in 10- and 11-digit form.
What drug is associated with this NDC?: Metformin Hydrochloride.
What is the active ingredient?: Metformin hydrochloride.
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 Metformin Hydrochloride?: 366 other product NDCs are listed under this name. See all Metformin Hydrochloride 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 Metformin Hydrochloride NDCs
Product	Strength	Form · route	Labeler	Product NDC	Package NDCs (11-digit)
Metformin Hydrochloride	Metformin hydrochloride 1000 mg/1	Tablet, Film coatedOral	REMEDYREPACK INC.	70518-4781	70518-4781-00
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	Marlex Pharmaceuticals, Inc.	10135-823	10135-0823-0510135-0823-1010135-0823-30+5 more
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	Marlex Pharmaceuticals, Inc.	10135-824	10135-0824-0510135-0824-1010135-0824-90
Metformin Hydrochloride	Metformin hydrochloride 1000 mg/1	Tablet, Film coatedOral	Preferred Pharmaceuticals Inc.	68788-4185	68788-4185-0168788-4185-0368788-4185-06+3 more
Metformin Hydrochloride	Metformin hydrochloride 625 mg/1	TabletOral	ScieGen Pharmaceuticals Inc	50228-588	50228-0588-0550228-0588-30
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	TabletOral	ScieGen Pharmaceuticals Inc	50228-589	50228-0589-0550228-0589-30
Metformin Hydrochloride	Metformin hydrochloride 1000 mg/1	Tablet, Extended releaseOral	REMEDYREPACK INC.	70518-4710	70518-4710-0070518-4710-02
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	TabletOral	REMEDYREPACK INC.	70518-4698	70518-4698-00
Metformin Hydrochloride	Metformin hydrochloride 1000 mg/1	Tablet, Film coatedOral	Advanced Rx of Tennessee, LLC	80425-0591	80425-0591-0180425-0591-0280425-0591-03+1 more
Metformin Hydrochloride	Metformin hydrochloride 1000 mg/1	TabletOral	Unit Dose Solutions, Inc.	87441-054	87441-0054-01

All 367 Metformin Hydrochloride NDCs

Other NDCs under ANDA 078321

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

FDA NDC Directory listings under ANDA 078321
Product	Strength	Form · route	Labeler	Product NDC
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	AvPAK	50268-550
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	AvPAK	50268-551
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	TAGI Pharma, Inc.	51224-007
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	TAGI Pharma, Inc.	51224-107
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	RedPharm Drug, Inc.	67296-1701
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	Precision Dose, Inc.	68094-804
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	Precision Dose, Inc.	68094-904
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	Preferred Pharmaceuticals Inc.	68788-8903
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	REMEDYREPACK INC.	70518-2709
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	REMEDYREPACK INC.	70518-4163
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	REMEDYREPACK INC.	70518-4639
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	Proficient Rx LP	71205-141
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	Proficient Rx LP	71205-186
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	Bryant Ranch Prepack	71335-0720
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	Bryant Ranch Prepack	71335-0776
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	Bryant Ranch Prepack	71335-2504
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	Bryant Ranch Prepack	71335-3166
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	Aphena Pharma Solutions - Tennessee, LLC	71610-533
Metformin Hydrochloride	Metformin hydrochloride 500 mg/1	Tablet, Extended releaseOral	direct rx	72189-150
Metformin Hydrochloride	Metformin hydrochloride 750 mg/1	Tablet, Extended releaseOral	PD-Rx Pharmaceuticals, Inc.	72789-451

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