Bimectin Injection Further information Cattle: Transitory discomfort has been observed in some cattle following subcutaneous administration. A low incidence of soft tissue swelling at the injection site has been observed. Sheep: Discomfort, sometimes intense but usually transient, has been observed in some sheep immediately following subcutaneous administration. Pigs: Mild and transitory pain reactions have been observed in some pigs following subcutaneous administration. All these reactions have disappeared without treatment. Ivermectin belongs to the avermectin (3-AV) class of anthelmintic endectocides.