What is NDC 42571-258?

42571-258 is the product NDC for Mefenamic acid, Mefenamic acid 250 mg/1 capsule, listed with the FDA by Micro Labs Limited. It has 2 package NDCs, shown above in 10- and 11-digit form.

Micro Labs Limited, NDC labeler code 42571. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.

What other NDCs exist for Mefenamic acid?

5 other product NDCs are listed under this name.

Is there a related HCPCS / J-code?

Not in Med-Code's curated HCPCS directory.

Mefenamic acid NDC 42571-258 | National Drug Code

NDC codes

FDA NDC Directory

Product NDC (as listed)42571-258Labeler and product segments. Claims need a package NDC.

Product NDC at billing width42571-0258Add 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
42571-258-01	42571025801	100 CAPSULE in 1 BOTTLE (42571-258-01)Marketed from Nov 19, 2010
42571-258-30	42571025830	30 CAPSULE in 1 BOTTLE (42571-258-30)Marketed from Nov 19, 2010

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): Mefenamic acid
Generic name (nonproprietary): mefenamic acid
Active ingredients: Mefenamic acid — 250 mg/1
Dosage form: Capsule
Route: Oral
Labeler: Micro Labs LimitedNDC labeler code 42571
Product type: Prescription drug
Marketing category: ANDA — Abbreviated New Drug Application (generic)Application ANDA 090562
Marketing start: Nov 19, 2010
Listing expires: Dec 31, 2027
Other FDA classes: Non-Steroidal (Chemical structure)Cyclooxygenase Inhibitors (Mechanism)
Identifiers: Product ID 42571-258_482b411c-8d6f-8690-e063-6294a90af95fSPL ID 482b411c-8d6f-8690-e063-6294a90af95fSPL set ID 4b0788cd-bdca-4fa5-9eba-01a270613aabRxCUI 829500UNII 367589PJ2CUPC 0342571258306
Pharmacologic class: Nonsteroidal Anti-inflammatory Drug

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

N442571025801 followed by a unit qualifier and the quantity

Package 42571-0258-01. 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 12, 2026. This label includes a boxed warning.

Indications (excerpt from the label)

Mefenamic acid capsules are a nonsteroidal anti-inflammatory drug indicated for: For management of mild to moderate pain in patient 14 years of age and older, when therapy will not exceed one week (7 days). ( 1.1 ) For treatment of primary dysmenorrhea. ( 1.2 ) 1.1 Mild to Moderate Pain Mefenamic acid capsules are indicated for management of mild to moderate pain in adults and pediatric patients 14 years of age and older, when therapy will not exceed one week (7 days). 1.2 Dysmenorrhea Mefenamic acid capsules are indicated for treatment of primary dysmenorrhea.

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 42571-258

What is NDC 42571-258?: 42571-258 is the product NDC for Mefenamic acid, Mefenamic acid 250 mg/1 capsule, listed with the FDA by Micro Labs Limited. It has 2 package NDCs, shown above in 10- and 11-digit form.
What drug is associated with this NDC?: Mefenamic acid.
What is the active ingredient?: Mefenamic acid.
Who is the labeler?: Micro Labs Limited, NDC labeler code 42571. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Mefenamic acid?: 5 other product NDCs are listed under this name. See all Mefenamic acid 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 Mefenamic acid NDCs
Product	Strength	Form · route	Labeler	Product NDC	Package NDCs (11-digit)
Mefenamic Acid	Mefenamic acid 250 mg/1	CapsuleOral	Advanced Rx of Tennessee, LLC	80425-0423	80425-0423-0180425-0423-0280425-0423-03
Mefenamic Acid	Mefenamic acid 250 mg/1	CapsuleOral	Advanced Rx Pharmacy of Tennessee, LLC	80425-0306	80425-0306-0180425-0306-0280425-0306-03
Mefenamic Acid	Mefenamic acid 250 mg/1	CapsuleOral	Misemer Pharmaceuticals, Inc	0276-0509	00276-0509-30
Mefenamic Acid	Mefenamic acid 250 mg/1	CapsuleOral	Lupin Pharmaceuticals, Inc.	68180-185	68180-0185-06
Mefenamic acid	Mefenamic acid 250 mg/1	CapsuleOral	Bryant Ranch Prepack	72162-2382	72162-2382-03

Other NDCs under ANDA 090562

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

FDA NDC Directory listings under ANDA 090562
Product	Strength	Form · route	Labeler	Product NDC
Mefenamic Acid	Mefenamic acid 250 mg/1	CapsuleOral	Advanced Rx Pharmacy of Tennessee, LLC	80425-0306
Mefenamic acid	Mefenamic acid 250 mg/1	CapsuleOral	Bryant Ranch Prepack	72162-2382