Authority to prescribe an Authority medicine is granted for specific indications and/or for certain patient circumstances. Authority may be obtained by telephone to Medicare Australia (known as "phone approval") or in writing from an authorised delegate of the Minister for Health.

Prescriptions must be written on an Authority Prescription Form, and the approval number must be noted on the prescription. Pharmacists cannot dispense the item as a pharmaceutical benefit unless it has been approved by Medicare Australia (indicated by the presence of the approval number).Some PBS medications are restricted and require prior approval from Medicare before a doctor is able to prescribe them on the PBS. This prior approval to prescribe grants the doctor the Authority to prescribe the desired medicine and have it funded under the PBS. OPI has been and continues to be the world leader in the nail care industry! Most well known for their nail treatments, OPI aims to offer you quality, not quantity. Their expansive range of products was expertly made to offer you the excellence you deserve! OPI is always looking for new ways to revolutionise the market and offer you new products to meet all of your nail care needs. Whether you want a nail treatment for brittle nails or a new, long-lasting and glossy nail polish manicure, OPI's got you covered! With the professional 3-step system, you can achieve long-wearing manicures from the comfort of your home! Some drugs may have Authority Required (Streamlined) status which does not require an explicit approval from Medicare, instead the doctor can use the Authority code found in the published Schedule for a given drug/indication.