STAFAC 500- virginiamycin powder 
Phibro Animal Health

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Stafac® 500
(Virginiamycin)
TYPE A MEDICATED ARTICLE

Type A Medicated Article Mix with swine and poultry feed

Active Drug Ingredient

Virginiamycin : 50%

(Contains 227g virginiamycin activity per lb)

Caution

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

Inert Ingredients:

Calcium carbonate, carboxymethylcellulose, mineral oil

For Further Manufacture Only.

Follow Directions For Use.

Approved by FDA under NADA # 091-467

301-8001-10

Stafac is a registered trademark of Phibro Animal Health Corporation

Distributed by: Phibro Animal Health Corporation, Teaneck, NJ 07666

Made in Canada

For use in swine and poultry feeds as specified below

Directions for Use

Mixing Directions—Swine

Stafac 500 Type A Medicated Article must be thoroughly mixed in the feed to assure even distribution. Determine the appropriate amount of Stafac 500 required from the table below. Dilute Stafac 500 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 500 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

200 g

2.27 mg

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

100 g for 2 weeks

followed by 50 g

200 g

100 g

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

50 g

0.57 mg

►Caution: Not for use in breeding swine over 120 pounds.◄

Mixing Directions—Poultry

Mix 100 g Stafac 500 with enough of one of the feed ingredients to make 10 lb of an intermediate mix. Add 1 lb of the intermediate mix for each 5 g of virginiamycin needed to medicate a ton of feed.

Poultry

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

Required amount of Stafac 500 per ton of Type C Medicated Feed (complete feed)

For use in broiler chickens

Prevention of necrotic enteritis caused by Clostridium perfringens susceptible to virginiamycin

20 g

40 g

Not for Use in Laying Chickens

Storage and Handling

Feed Continuously as Sole Ration

Store At Or Below 25oC (77oF), Excursions Permitted Up to 40oC (104oF)

Close Container After Use

NOT FOR HUMAN USE

Restricted Drug (California) – Use Only as Directed

Stafac 500

Stafac 500Stafac 500

STAFAC 500 
virginiamycin powder
Product Information
Product TypeVFD TYPE A MEDICATED ARTICLE ANIMAL DRUGItem Code (Source)NDC:66104-1501
Route of AdministrationORAL
Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
VIRGINIAMYCIN (UNII: C49WS9N75L) (VIRGINIAMYCIN - UNII:C49WS9N75L) VIRGINIAMYCIN227 g  in 0.45 kg
Inactive Ingredients
Ingredient NameStrength
CALCIUM CARBONATE (UNII: H0G9379FGK)  
MINERAL OIL (UNII: T5L8T28FGP)  
CARBOXYMETHYLCELLULOSE SODIUM, UNSPECIFIED FORM (UNII: K679OBS311)  
SOYBEAN OIL (UNII: 241ATL177A)  
Packaging
#Item CodePackage DescriptionMarketing Start DateMarketing End Date
1NDC:66104-1501-945.3 kg in 1 DRUM
2NDC:66104-1501-125 kg in 1 BOX
3NDC:66104-1501-2600 kg in 1 BAG
4NDC:66104-1501-3800 kg in 1 BAG
Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
NADANADA09146704/01/2010
Labeler - Phibro Animal Health (006989008)
Registrant - Phibro Animal Health (006989008)

Revised: 11/2023
Document Id: c749f8bf-709e-49c5-b2c1-031b6df65e8a
Set id: 6e136d64-2fc7-4921-bb9c-7575455b2389
Version: 8
Effective Time: 20231106
 
Phibro Animal Health