Narasin: adverse event reports in all combinations

Name: Narasin, all combinations: adverse event reports that FDA received, by year and species
Creator: Pet Drug Reports
License: https://creativecommons.org/publicdomain/zero/1.0/

Active ingredient, alone and in combinations

Brand names with this ingredient: Monteban, Maxiban 72, Flavomycin, BMD, Stafac, Inteprity, and 2 more.

The openFDA records give the value "MSK" for the brand name and for the manufacturer name of each drug. FDA says that MSK means "masked". So the site cannot count a report for a brand.

Read this first. FDA says this about the data:

An API dataset query result cannot be used to estimate the risk associated with the product or compare one drug or device product with another. When looking at the results, be aware that there is no certainty that the reported drug or device caused the adverse event. This dataset should not be the sole source of information for clinical decision-making or other assumptions about the safety or effectiveness of a product. The adverse event may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources.
FDA Center for Veterinary Medicine publishes these words. Source: Adverse Event Reports for Animal Drugs and Devices, read on 2 Oct 2026. The data have the reports that FDA received through 26 Jun 2026.

This page is not veterinary advice. For an animal that is ill, speak to a veterinarian.

Contacting a veterinarian How to report to FDA

FDA reports received through 26 Jun 2026. Counts include this ingredient alone and in combinations. Why brand names have no separate count.

From April 1989 to March 2026, FDA received 715 adverse event reports that name a drug with narasin, alone or in a combination. 2 sets of active ingredients with narasin have a drug page.

Of the 715 reports, 402 (56.2%) are about chickens. 170 reports are about pigs (23.8%). In January to March 2026, FDA received 14 reports that name narasin, alone or in a combination. The signs that appear in the largest number of the 715 reports are "Death" and "Lack of efficacy (protozoa) - Coccidia". A report is not proof that a drug caused a sign.

Reports that name this ingredient rose by 17.4% in the 12 months to June 2026, compared with the 12 months before. Reports for all animal drugs fell by 4.6% in the same periods. The newest months can get more reports in a later update. Reports about chickens are 56.2% of the reports that name this ingredient, and 0.1% of all reports.

Search engines list an ingredient page with 500 reports or more in all years. The page also needs 30 reports or more in the 12 months to June 2026. This page is under one of these numbers. The site keeps the page and keeps it out of search engines.

Reports in the latest closed quarter

Reports that name narasin, by the quarter in which FDA received them
Species	Jan to Mar 2026	Oct to Dec 2025	Jan to Mar 2025
All species	14	5	5
Dog	0	0	0
Cat	0	0	0
Horse	0	0	0
Other or not given	14	5	5

January to March 2026 is the latest closed quarter in the data.

All updates Feed of updates (RSS)

Drug pages with narasin

A report names a drug by its set of active ingredients. Each set with narasin that has a drug page is in the table, in order of name. The table has 2 sets.

Drug pages with narasin, in order of name, with the reports of each page
Active ingredients	Reports, all years	Reports, latest 12 months
Narasin	434	23
Narasin + Nicarbazin	311	7

A report can name more than one set, so the counts of the sets can add to more than the count of the page.

An API dataset query result cannot be used to estimate the risk associated with the product or compare one drug or device product with another.
FDA Center for Veterinary Medicine. Source: Adverse Event Reports for Animal Drugs and Devices

Signs that the reports list

A sign is a coded term from the report. The words in brackets are a plain gloss of the term. The percentage is the share of the 715 reports that list the sign. One report can list more than one sign and more than one drug.

The sign that is in the largest number of the reports comes first.

Death44.1%315 reports
Lack of efficacy (protozoa) - Coccidia[the product did not have the expected effect: coccidia]22.8%163 reports
Increased mortality rate9.8%70 reports
Lameness8.4%60 reports
Granules/Powder, Abnormal8.1%58 reports
Accidental exposure[exposure that was not intended]8%57 reports
Death by euthanasia[the animal was euthanized]7.6%54 reports
Recumbency[lying down and unable or unwilling to rise]6.3%45 reports
Lack of efficacy - NOS[the product did not have the expected effect]5.3%38 reports
NT - Abnormal necropsy finding NOS[NOS: not otherwise specified]4.8%34 reports
Loss of egg quantity4.6%33 reports
Enteritis4.5%32 reports
Anorexia[not eating]3.9%28 reports
Digestive tract disorder NOS[digestive problem, type not specified]3.6%26 reports

Show the next 16 signs

Respiratory tract disorder NOS[NOS: not otherwise specified]3.6%26 reports
Vocalisation[crying out or unusual noise]3.5%25 reports
Unclassifiable adverse event[event that fits no dictionary term]2.9%21 reports
Inappropriate preparation of medication2.7%19 reports
Necropsy performed2.7%19 reports
Dehydration2.2%16 reports
Rectal prolapse2.2%16 reports
Residues in eggs2.2%16 reports
Systemic disorder NOS[NOS: not otherwise specified]2.1%15 reports
Diarrhoea[diarrhea]2%14 reports
Lethargy[unusually tired or inactive]2%14 reports
Musculoskeletal disorder NOS[NOS: not otherwise specified]2%14 reports
Unthrifty2%14 reports
Pneumonia[lung infection or inflammation]1.8%13 reports
Abnormal necropsy finding1.7%12 reports
Ataxia[unsteady, uncoordinated movement]1.7%12 reports

Download all signs (CSV)

Reports by species

Chicken56.2%402
Pig23.8%170
Turkey2.5%18
Cattle2.1%15
Human exposure1.5%11
Dog0.8%6

Reports for each month, Jul 2021 to Jun 2026

Dog4 reports

No chart: no month has 5 or more reports.

Cat0 reports

No chart: no month has 5 or more reports.

Horse1 report

No chart: no month has 5 or more reports.

Other or not given132 reports. Largest count in one month: 12 (Nov 2021)

The month is the month in which FDA received the report. Each chart has its own scale. FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.

Reports by year

Dog
Cat
Horse
Other or not given

Reports that name narasin, by the year in which FDA received them and by species
Year	Dog	Horse	Other or not given	All species
2026	0	0	14	14
2025	0	0	25	25
2024	0	0	30	30
2023	3	0	13	16
2022	1	1	19	21
2021	0	0	48	48
2020	0	0	22	22
2019	0	0	18	18
2018	0	0	21	21
2017	0	0	33	33
2016	0	0	39	39
2015	0	0	43	43
2014	0	0	40	40
2013	0	0	47	47
2012	0	0	31	31
2011	0	0	38	38
2010	0	0	28	28
2009	0	0	15	15
2008	1	0	15	16
2007	0	0	37	37
2006	0	0	34	34
2005	0	0	30	30
2004	0	0	24	24
2003	1	0	29	30
2002	0	1	3	4
2001	0	0	1	1
2000	0	0	1	1
1999	0	0	2	2
1997	0	0	1	1
1994	0	1	0	1
1990	0	0	1	1
1989	0	0	4	4

2026 has the reports that FDA received through Mar 2026. Download the years (CSV)

What the reports record

Outcome at the time of the report

Recovered/Normal6.4%46
Recovered with Sequela[recovered, with a lasting effect]0.8%6
Ongoing3.4%24
Died55.8%399
Euthanized8%57
Outcome Unknown27.3%195

An outcome in a report is not proof that the drug caused it. The person who sends the report gives the outcome. Each share is of the 715 reports that name narasin.

Kind of report

Safety issue72.4%518
Lack of expected effectiveness9.1%65
Both safety and lack of expected effectiveness5.6%40
Manufacturing or product defect12.9%92
Other0%0

Age of the animal

Under 1 year50.8%363
1 to 3 years0.4%3
4 to 7 years0.1%1
8 to 11 years0%0
12 years and over0.4%3
Age not given48.3%345

Each share of kind and age is of the 715 reports that name narasin.

Approved animal drugs with this active ingredient (FDA Green Book)

This section is reference data. It has no report count.

The openFDA records give the value "MSK" for the brand name and for the manufacturer name of each drug. FDA says that MSK means "masked". So the site cannot count a report for a brand.

Brand names

Monteban
Maxiban 72
Flavomycin
BMD
Stafac
Inteprity
Pennitracin MD
Skycis 100

What the Green Book records give

Applications with an approval in force: 15
Approved species: Chickens, Swine
Dose forms: Type A medicated articles to be used in the manufacture of Type C medicated feeds, Medicated Feed, Type A Medicated Article, Type A medicated articles for use in the manufacture of Type B and Type C medicated feeds
Routes: Oral
Sale: OTC (over the counter), VFD (veterinary feed directive)
Earliest approval date in the records: 18 Jan 1989

The species, dose forms and routes are the words of the Green Book records for all the applications together. One product can have fewer. The label of a product gives its approved use.

Applications in the Green Book of 2 Nov 2026, pioneer applications (NADA) first
Brand name	Active ingredients	Sponsor	Approved species	Application
Monteban 45	Narasin	Elanco US Inc.	Chickens	NADA 118-980
Maxiban 72	Narasin, Nicarbazin	Elanco US Inc.	Chickens	NADA 138-952
Flavomycin / Monteban	Bambermycins, Narasin	Huvepharma EOOD	Chickens	NADA 140-845
BMD and MontebanTM	Bacitracin methylenedisalicylate, Narasin	Phibro Animal Health Corp.	Chickens	NADA 140-853
Monteban and Albac; Monteban and Baciferm	Bacitracin Zinc, Narasin	Phibro Animal Health Corp.	Chickens	NADA 140-865
BMD / Maxiban	Bacitracin methylenedisalicylate, Narasin, Nicarbazin	Elanco US Inc.	Chickens	NADA 140-926
Flavomycin / Maxiban	Bambermycins, Narasin, Nicarbazin	Elanco US Inc.	Chickens	NADA 140-942
BMD / Maxiban	Bacitracin methylenedisalicylate, Narasin, Nicarbazin	Phibro Animal Health Corp.	Chickens	NADA 141-124
Skycis 100	Narasin	Elanco US Inc.	Swine	NADA 141-340
Stafac and Maxiban	Narasin, Nicarbazin, Virginiamycin	Phibro Animal Health Corp.	Chickens	NADA 141-429
Stafac and Monteban	Narasin, Virginiamycin	Phibro Animal Health Corp.	Chickens	NADA 141-462
Inteprity and Maxiban	Avilamycin, Narasin, Nicarbazin	Elanco US Inc.	Chickens	NADA 141-466
Inteprity and Monteban	Avilamycin, Narasin	Elanco US Inc.	Chickens	NADA 141-467
Pennitracin MD and Maxiban	Bacitracin, Narasin, Nicarbazin	Pharmgate Inc.	Chickens	NADA 141-529
Pennitracin MD 50G and Monteban	Bacitracin, Narasin	Pharmgate Inc.	Chickens	NADA 141-574
Monteban / Roxarsoneapproval withdrawn	Narasin, Roxarsone	Elanco Animal Health, A Division of Eli Lilly & Co.	Chickens	NADA 140-445
3-Nitro / Flavomycin / Montebanapproval withdrawn	Bambermycins, Narasin, Roxarsone	Huvepharma EOOD	Chickens	NADA 140-843
3-Nitro / BMD / Montebanapproval withdrawn	Bacitracin methylenedisalicylate, Narasin, Roxarsone	Zoetis Inc.	Chickens	NADA 140-852
Lincomix / Maxibanapproval withdrawn	Lincomycin, Narasin, Nicarbazin	Elanco US Inc.	Chickens	NADA 140-947
3-Nitro / BMD / Maxibanapproval withdrawn	Bacitracin methylenedisalicylate, Narasin, Nicarbazin, Roxarsone	Zoetis Inc.	Chickens	NADA 141-112
3-Nitro / Maxibanapproval withdrawn	Narasin, Nicarbazin, Roxarsone	Elanco Animal Health, A Division of Eli Lilly & Co.	Chickens	NADA 141-113
Monteban / Tylanapproval withdrawn	Narasin, Tylosin Phosphate	Elanco US, Inc.	Chickens	NADA 141-170

FDA pages for this ingredient

How to Report Animal Drug and Device Side Effects and Product ProblemsThe FDA page that tells an owner or a veterinarian how to send a report.
Green Book record of NADA 118-980The FDA record of the application for Monteban 45.
Green Book record of NADA 138-952The FDA record of the application for Maxiban 72.
Green Book record of NADA 140-845The FDA record of the application for Flavomycin / Monteban.
Green Book record of NADA 140-853The FDA record of the application for BMD and MontebanTM.
Green Book record of NADA 140-865The FDA record of the application for Monteban and Albac, Monteban and Baciferm.
Green Book record of NADA 140-926The FDA record of the application for BMD / Maxiban.
Animal Drugs @ FDAThe search page of the Green Book, the FDA list of approved animal drugs.

The site checked these addresses on 2 Oct 2026. The links open in a new tab.

Cite this page

Pet Drug Reports. Narasin, all combinations: adverse event reports that FDA received. https://petdrugreports.com/ingredient/narasin/ Source: FDA Center for Veterinary Medicine, openFDA Animal and Veterinary adverse event reports, export of 30 Oct 2026. Reports received through 26 Jun 2026.

Where the data come from

The counts come from the openFDA Animal and Veterinary adverse event files, export of 30 Oct 2026. The files have the reports that the FDA Center for Veterinary Medicine received through 26 Jun 2026. The files mask brand and manufacturer names. The site counts a drug by the active ingredients that each record gives, and gives no count to a brand, an application or a company. Ingredient names and the lists of approved products follow the FDA Green Book of 2 Nov 2026. Ingredient names follow the Green Book, with salts and forms as FDA lists them.

The site does not publish report text, lot numbers or details of a reporter. FDA's record is the authority. See how the site counts reports, the data sources and the corrections page.

Questions about these reports

Which brand are these reports about?: The openFDA records give the value "MSK" for the brand name and for the manufacturer name of each drug. FDA says that MSK means "masked". So the site cannot count a report for a brand. The Green Book section of this page lists brand names with this active ingredient.
Do the reports show that the ingredient caused the signs?: No. A report can name more than one drug, and a drug can have more than one active ingredient. FDA states this about the data.
When looking at the results, be aware that there is no certainty that the reported drug or device caused the adverse event.
The adverse event may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources.
FDA Center for Veterinary Medicine. Source: Adverse Event Reports for Animal Drugs and Devices
How many reports did FDA receive in the latest 12 months?: FDA received 27 reports in the 12 months to June 2026. It received 23 reports in the 12 months before. FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.
What kinds of report are in the count?: Of the 715 reports received from April 1989 to March 2026, 72.4% are about a safety issue only. 14.7% are about a lack of expected effectiveness, alone or with a safety issue. 12.9% are about a defect of the product or its package.