Section 3339. Refilling of prescriptions for controlled substances

1.
  Prescriptions for a schedule II controlled substance and those  schedule
  III  or  schedule  IV  controlled  substances which the commissioner may
  require by regulation may not be refilled.
    2. A prescription, except for a schedule II  controlled  substance  or
  those  schedule  III  or  schedule  IV  controlled  substances which the
  commissioner may require by regulation may be refilled not more than the
  number of times specifically  authorized  by  the  prescriber  upon  the
  prescription,  provided however no such authorization shall be effective
  for a period greater than six months from the date the  prescription  is
  signed.  In the event that the prescription authorizes the dispensing of
  more than a thirty day supply of schedule III, schedule IV or schedule V
  substances pursuant  to  regulations  of  the  commissioner  enumerating
  conditions  warranting  specified greater supplies, the prescription may
  be refilled only once.
    3. Unless an earlier refilling is authorized  by  the  prescriber,  no
  prescription  for  a  controlled  substance may be refilled earlier than
  seven days prior to the date the previously dispensed  supply  would  be
  exhausted if used in conformity with the directions for use.