Stafac 20

Manufacturer
Phibro Animal Health
Effective date
2025-10-10
Label type
VFD TYPE A MEDICATED ARTICLE ANIMAL DRUG LABEL
Version
9
Source
full-release
Hydrated at
2026-06-01 02:45:59

Label at a glance#

ProductStafac 20
Active ingredientVIRGINIAMYCIN
Label structure6 sections

Dosage and administration

Mixing Directions Stafac 20 Type A Medicated Article must be thoroughly mixed in the feed to assure even distribution. Determine the appropriate amount of Stafac 20 required from the table below. Dilute Stafac 20 with a portion of one of the feed ingredients (enough to make a quantity equal to 10 lb per ton) before final mixing. Swine Required level of virginiamycin activity per ton of Type C Medicated Feed (compl...

Storage and handling

Close Container After Use

Label contents#

Full prescribing information#

Active Drug Ingredient

DESCRIPTION SECTION

Virginiamycin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4%

(Contains 20 g virginiamycin activity per lb)

CAUTION:

WARNINGS SECTION

Federal law restricts medicated feed containing this veterinary feed directive (VFD) drug to use by or on the order of a licensed veterinarian.

Ingredients:

INACTIVE INGREDIENT SECTION

Processed grain by-products, roughage products, calcium carbonate,

carboxymethylcellulose, mineral oil

INDICATIONS & USAGE SECTION

(20 g virginiamycin activity per lb)

For use in swine and poultry feeds as specified below

Directions for Use

DOSAGE & ADMINISTRATION SECTION

Mixing Directions

Stafac 20 Type A Medicated Article must be thoroughly mixed in the feed to assure even distribution. Determine the appropriate amount of Stafac 20 required from the table below. Dilute Stafac 20 with a portion of one of the feed ingredients (enough to make a quantity equal to 10 lb per ton) before final mixing.

Swine

Required level of virginiamycin activity per ton of Type C Medicated Feed (complete feed)

Required amount of Stafac 20 per ton of Type C Medicated Feed (complete feed)

Amount of virginiamycin activity provided to animal per lb of body weight per day

Treatment of swine dysentery in nonbreeding swine weighing over 120 lb

100 g for

2 weeks

5.00 lb

2.27 mg

Treatment and control of swine dysentery in swine weighing up to 120 lb

100 g for

2 weeks followed by 50g

5.00 lb

2.50 lb

2.27 mg

1.14 mg

Aid in control of swine dysentery in swine weighing up to 120 lb

For use in animals or on premises with a history of swine dysentery but where symptoms have not yet occurred

25 g

1.25 lb

0.57 mg

CAUTION: Not for use in breeding swine over 120 lbs.

Poultry

Required level of virginiamycin activity per ton of Type C Medicated Feed (complete feed)

Required amount of Stafac 20 per ton of Type C Medicated Feed (complete feed)

Prevention of necrotic enteritis caused by Clostridium perfringens susceptible to virginiamycin

Not for Use in Laying Chickens

20 g

1.00 lb

Feed Continuously as Sole Ration

Store at Or Below 25oC (77oF), Excursions Permitted Up To 40oC (104oF)

STORAGE AND HANDLING SECTION

Close Container After Use

SPL UNCLASSIFIED SECTION

For further manufacture only.

Follow Directions on Back Panel

Stafac is a registered trademark of Phibro Animal Health Corporation

Phibro Animal Health Corporation, Teaneck, NJ 07666

Net Weight 50 lb (22.6 kg)

Approved by FDA under NADA # 091-467

9907000

101-9007-12

Stafac 20

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

Stafac 20Stafac 20Stafac 20

DailyMed Package Descriptions#

Package NDC, Product, Description table
Package NDCProductDescriptionFormQuantityStrengthSPL version
66104-1220-0Stafac 2022.6 kg in 1 BAGPOWDER22.69

DailyMed Socrata Ingredients#

Ingredient, Type, UNII table
IngredientTypeUNIISPL versionUploaded
VIRGINIAMYCINACTIVE INGREDIENTC49WS9N75L6
VIRGINIAMYCINACTIVE MOIETYC49WS9N75L6
RICE BRANINACTIVE INGREDIENTR60QEP13IC6

Products#

Every source-derived product name is available through these pages.

DailyMed product names page 1 of 1 · 3 matching rows.

NDC Codes#

Product NDC, Package NDC table
Product NDCPackage NDC
66104-122066104-1220-0

Ingredients#

Every source-derived ingredient row is available through these pages.

DailyMed ingredient rows page 1 of 1 · 2 matching rows.

Name, UNII, Kind table
NameUNIIKind
VIRGINIAMYCINC49WS9N75LACTIB
RICE BRANR60QEP13ICIACT

Source Document#

Source XML

Older Hydrated Versions#

Version, Effective date, Source table
VersionEffective dateSourceHydrated
82018-12-27full-release2026-06-01 02:40:21

Reported adverse events (FAERS/openFDA)#

Adverse event summaries are temporarily unavailable. Other product information remains available.