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NASCOBAL

NDA

CYANOCOBALAMIN | N021642 | ENDO OPERATIONS LTD

1 strength0 unique patents0 unique exclusivities

PTAB Proceedings

No IPR/PGR/CBM challenges found at the Patent Trial and Appeal Board

Patent Reexaminations

No ex parte or inter partes reexamination proceedings found at USPTO

Hatch-Waxman Litigation

3 cases on OB patents from PACER

Case	Court	Filed	Status	Judge
Endo Pharmaceuticals Inc. v. Perrigo UK FINCO Limited Partnership 1:2019cv00437	D. Del.	2019-03-01	Terminated 2019-08-22	—
ENDO PHARMACEUTICALS INC. v. LUPIN ATLANTIS HOLDINGS SA 3:2018cv10952	D.N.J.	2018-06-22	Terminated 2019-06-24	—
Endo Pharmaceuticals Inc. v. Lupin Atlantis Holdings SA 2:2017cv00558	E.D. Tex.	2017-07-28	Terminated 2018-06-22	—

Source: PACER. NOS 835 (Patent - Abbreviated New Drug Application).

Citizen Petitions

1 petition from Regulations.gov

Petition	Type	Filed	Status	Petitioner
Citizen Petition from Robert Van Osdel FDA-2024-P-4293 · 6 docket documents Robert van Osdel filed a citizen petition requesting that the FDA determine whether NASCOBAL (Cyanocobalamin, USP) Nasal Spray 0.5 mg/spray was discontinued due to safety or effectiveness concerns.	Other	2024-09-11	Granted	Robert Van Osdel

Source: Regulations.gov. FDA citizen petitions matched by application number.

Clinical Trials

20 trials from ClinicalTrials.gov, 15 completed

Trial	Phase	Status	Sponsor	Enrollment	Dates
Oral Cyanocobalamin (Eligen B12) Bioavailability Study NCT01311739	N/A	Completed	Emisphere Technologies, Inc.	20	2008-05 → 2008-06
Study of Pralatrexate in Female Patients With Previously-treated Breast Cancer NCT01118624	Phase 2	Completed	Acrotech Biopharma Inc.	22	2010-03 → 2012-07
Study of Pralatrexate to Treat Participants With Relapsed or Refractory B-cell Non-Hodgkin's Lymphoma NCT00998946	Phase 2	Completed	Spectrum Pharmaceuticals, Inc	29	2009-09 → 2012-08
Randomized Study of Folic Acid Therapy for Hyperhomocysteinemia in Patients With End Stage Renal Disease Receiving Hemodialysis NCT00004495	N/A	Completed	Georgetown University	84	1999-06 → 2000-09
The Effect of Phentermine and B12 on Weight Loss Among Obese Patients NCT01719185	Early Phase 1	Completed	Dr. Michael Lang	22	2012-09 → 2013-04
VITRO-Trial. B Vitamins and the Secondary Prevention of Venous Thrombosis NCT00314990	N/A	Completed	Radboud University Medical Center	620	1996-01 → 2003-01
Vitamin Therapy for Prevention of Stroke NCT00004734	Phase 3	Completed	National Institute of Neurological Disorders and Stroke (NINDS)	—	1996-09 → 2004-02
Effectiveness of Dalteparin Therapy as Intervention in Recurrent Pregnancy Loss NCT00400387	Phase 3	Completed	University of Jena	449	2006-11 → 2013-04
Study of Pralatrexate vs. Erlotinib for Non-Small Cell Lung Cancer After at Least 1 Prior Platinum-based Treatment NCT00606502	Phase 2	Completed	Spectrum Pharmaceuticals, Inc	201	2008-01 → 2010-06-24
Study of Pralatrexate & Gemcitabine With B12 & Folic Acid to Treat Relapsed/Refractory Lymphoproliferative Malignancies NCT00481871	Phase 1/2	Completed	Acrotech Biopharma Inc.	119	2007-05 → 2011-08

Source: ClinicalTrials.gov. Trials matched by ingredient name.

Drug Pricing (NADAC)

National Average Drug Acquisition Cost — Week of 2026-07-15 | 1 NDC

Highest NADAC/Unit

$171.74

per ea

Lowest NADAC/Unit

$171.74

per ea

Brand NDCs

Generic NDCs

NDC Description	NADAC/Unit	Unit	Type	Generic NADAC	Effective
49884027082NASCOBAL 500 MCG NASAL SPRAY	$171.74	EA	Brand	$102.15	2025-07-23

Source: NADAC (data.medicaid.gov). Prices reflect national average acquisition costs for retail community pharmacies.

API Supply Chain3 active DMFs6 inactive

3 active API suppliers hold Drug Master Files for this ingredient.

EUROAPI FRANCECYANOCOBALAMIN

DMF 40951981

HEBEI YUXING BIO-ENGINEERING CO LTDCYANOCOBALAMIN

DMF 213912008

HEBEI HUARONG PHARMACEUTICAL CO LTDCYANOCOBALAMIN

DMF 361912021

FARMITALIA SPAInactiveCYANOCOBALAMIN (VITAMIN B 12)

DMF 32221978

SANOFI CHIMIEInactiveCYANOCOBALAMIN PH. EUR. USP, JP

DMF 51381983

ANTIBIOTICE SAInactiveCYANOCOBALAMIN (VITAMIN B12)

DMF 165562003

NORTH CHINA PHARMACEUTICAL VICTOR CO LTDInactiveCYANOCOBALAMIN, USP (VITAMIN B-12)

DMF 169062003

WOCKHARDT LTDInactiveCYANOCOBALAMIN USP

DMF 197022006

HEBEI HUARONG PHARMACEUTICAL CO LTDInactiveCYANOCOBALAMIN

DMF 209732007

Source: FDA Drug Master Files (fda.gov). Type II API DMFs matched by ingredient.

Approval Letters

4 letters from Drugs@FDA

Date	Submission	Document
Dec 20, 2018	SUPPL -19	View Letter (PDF)
Feb 7, 2014	SUPPL -15	View Letter (PDF)
Sep 20, 2006	SUPPL -2	View Letter (PDF)
Feb 3, 2005	ORIG -1	View Letter (PDF)

Source: Drugs@FDA application documents.

Products (1)

#001 — 0.5MG/SPRAY **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**

RLD

0 patents0 exclusivities▴

SPRAY, METERED;NASAL | Approved: Jan 31, 2005

No patent or exclusivity listings for this strength.