Duphafral Multivitamin 9 Dosage and administration By intramuscular or subcutaneous injection. Clean the area of the injection site and swab with spirit. Ensure that all injection equipment is thoroughly clean and sterilised before use. Piglets: up to 10kg (20Ibs) 0.5–2 ml Calves, foals, sheep and pigs 5-10 ml Weaners and lambs 2-5 ml Horses and cattle 20-30 ml The injection may be repeated at intervals of 10–14 days. Aseptic precautions must be observed when using this product.