Product labels can and do change so it is important to double check the label before using a product. For example, over the last 2 years the product labels and use guidelines for several growth implants have changed. Any implants that contain the antibiotic Tylan, now require a prescription for purchase.
Other changes relate to animal age class and reimplantation. An FDA document titled “FDA provides a list of currently-approved and currently-marketed implants available by beef cattle target animal class which clarifies the approved conditions of use regarding use in a reimplantation program” can accessed online for more information.
