Manufacturer: Troy Laboratories Pty Ltd Composition Ascorbic acid (as sodium ascorbate) 500 mg/mL. Indications Vitamin C supplement for horses, cattle and dogs. Precautions Avoid carcass damage. Withholding Periods Meat. Horses, cattle: nil. Dosage and Administration Give by subcutaneous or intramuscular injection; repeat daily as indicated. Horses. 5 to 10 mL. Cattle. 2 to 4 mL. Dogs. 0.25 to 1 mL.