NADA Number: 008-274

Proprietary Name Pig Scour Tablets
Sponsor Fort Dodge Animal Health, Division of Wyeth Holdings Corp.
Sponsor Address P. O. Box 1339
Fort Dodge, IA    50501
USA
Ingredients Roxarsone
Species Swine, no use class stated or implied
Routes of Administration Per Os
Dose Form Liquid (solution)
Drug Form Tablet
Dispensing Status OTC
Withdrawal Time Swine: 5 days before slaughter.
Dosage Amount,
Indications
& Limitations

520.2088 Roxarsone tablets.

Specifications: Each tablet contains 400 milligrams of roxarsone (3-nitro-4-hydroxyphenylarsonic acid).

Conditions of use:

Swine

Amount: 1 tablet (400 milligrams) per gallon of drinking water for no more than 6 days, or 1 tablet (400 milligrams) per 2 fluid ounces of warm water per 50 pounds of body weight as a drench once daily for 1 to 2 days.

Indications: As an aid in the treatment of swine dysentery (hemorrhagic enteritis or bloody scours).

Limitations: Treatment may be repeated after 5 days off medication. If no improvement is observed, consult a veterinarian. Treated animals must consume enough medicated water to provide a therapeutic dose. Withdraw 5 days before slaughter. Use as sole source of organic arsenic.

NAS/NRC status: These conditions are NAS/NRC reviewed and found effective. NADA's for these uses need not include effectiveness data as specified by 514.111 of this chapter, but may require bioequivalency and safety information.

Tolerances

Tolerances for total residues of combined arsenic (calculated as Arsenic) in food are established as follows:

a. Chickens and turkeys (edible tissues): (1) 0.5 part per million in uncooked muscle tissue. (2) 2 parts per million in uncooked edible by-products.

b. Chicken and turkey eggs: 0.5 part per million

c. Swine (edible tissues): (1) 2 parts per million in uncooked liver and kidney. (2) 0.5 part per million in uncooked muscle tissue and by-products other than liver and kidney.