Bimectin Injection Pharmaceutical precautions This product does not contain an antimicrobial preservative. Avoid the introduction of contamination during use. Swab septum before removing each dose. Use a dry sterile needle and syringe. Following withdrawal of the first dose, use the product within 28 days. Discard unused material. Should any apparent growth or discolouration occur the product should be discarded. Do not mix with other medicinal products. Keep out of reach and sight of children.