Regulin Contra-indications, warnings, etc Use by subcutaneous implantation at the base of the ear only. Avoid damaging implants. Use only sharp undamaged needles. Only use Regulin® on adult ewes or shearlings. Regulin® will not be effective on sexually immature animals. Use of Regulin® in ewes suckling lambs at foot may not give optimum results. Do not use at times other than those recommended. Variable results may be seen following use of the product, associated with the management systems involved. Keep out of the reach of children. For animal treatment only. Care should be taken to avoid accidental self-injection. In the case of accidental self-injection, seek medical advice immediately. Unused product should be disposed of in accordance with any guidance from an appropriate waste regulation authority. Withdrawal periods Milk: Zero hours Meat: Zero days