This is not required if you have a doctor's prescription. Mega Male Enhancement 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. Authority to prescribe an Authority medicine is granted for specific indications and/or for certain patient circumstances. Mega Male Enhancement Reviews 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.